diff --git a/src/dstr-binding-async-iteration/ary-init-iter-close.case b/src/dstr-binding-async-iteration/ary-init-iter-close.case
new file mode 100644
index 0000000000000000000000000000000000000000..ab1844630591a1b6b73dbcd73d190a32b855b8a2
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-init-iter-close.case
@@ -0,0 +1,37 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Iterator is closed when not exhausted by pattern evaluation
+template: default
+info: |
+    13.3.3.5 Runtime Semantics: BindingInitialization
+
+    BindingPattern : ArrayBindingPattern
+
+    [...]
+    4. If iteratorRecord.[[done]] is false, return ? IteratorClose(iterator,
+       result).
+    [...]
+features: [Symbol.iterator]
+---*/
+
+//- setup
+var doneCallCount = 0;
+var iter = {};
+iter[Symbol.iterator] = function() {
+  return {
+    next: function() {
+      return { value: null, done: false };
+    },
+    return: function() {
+      doneCallCount += 1;
+      return {};
+    }
+  };
+};
+//- elems
+[x]
+//- vals
+iter
+//- body
+assert.sameValue(doneCallCount, 1);
diff --git a/src/dstr-binding-async-iteration/ary-init-iter-get-err.case b/src/dstr-binding-async-iteration/ary-init-iter-get-err.case
new file mode 100644
index 0000000000000000000000000000000000000000..3fd5f5c99e3277b8ae1b6f0e1cfbc0c91200786c
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-init-iter-get-err.case
@@ -0,0 +1,26 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Abrupt completion returned by GetIterator
+template: error
+info: |
+    13.3.3.5 Runtime Semantics: BindingInitialization
+
+    BindingPattern : ArrayBindingPattern
+
+    1. Let iterator be GetIterator(value).
+    2. ReturnIfAbrupt(iterator).
+features: [Symbol.iterator]
+---*/
+
+//- setup
+var iter = {};
+iter[Symbol.iterator] = function() {
+  throw new Test262Error();
+};
+//- elems
+[x]
+//- vals
+iter
+//- error
+Test262Error
diff --git a/src/dstr-binding-async-iteration/ary-init-iter-no-close.case b/src/dstr-binding-async-iteration/ary-init-iter-no-close.case
new file mode 100644
index 0000000000000000000000000000000000000000..b9277b12341ed079486e921b1fa6fe999b856975
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-init-iter-no-close.case
@@ -0,0 +1,37 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Iterator is not closed when exhausted by pattern evaluation
+template: default
+info: |
+    13.3.3.5 Runtime Semantics: BindingInitialization
+
+    BindingPattern : ArrayBindingPattern
+
+    [...]
+    4. If iteratorRecord.[[done]] is false, return ? IteratorClose(iterator,
+       result).
+    [...]
+features: [Symbol.iterator]
+---*/
+
+//- setup
+var doneCallCount = 0;
+var iter = {};
+iter[Symbol.iterator] = function() {
+  return {
+    next: function() {
+      return { value: null, done: true };
+    },
+    return: function() {
+      doneCallCount += 1;
+      return {};
+    }
+  };
+};
+//- elems
+[x]
+//- vals
+iter
+//- body
+assert.sameValue(doneCallCount, 0);
diff --git a/src/dstr-binding-async-iteration/ary-name-iter-val.case b/src/dstr-binding-async-iteration/ary-name-iter-val.case
new file mode 100644
index 0000000000000000000000000000000000000000..8c65a0868f008e5f315cc529229633d86f680ca5
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-name-iter-val.case
@@ -0,0 +1,35 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: SingleNameBinding with normal value iteration
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    4. If iteratorRecord.[[done]] is false, then
+       a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+       b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+       c. ReturnIfAbrupt(next).
+       d. If next is false, set iteratorRecord.[[done]] to true.
+       e. Else,
+          [...]
+          i. Let v be IteratorValue(next).
+          ii. If v is an abrupt completion, set
+              iteratorRecord.[[done]] to true.
+          iii. ReturnIfAbrupt(v).
+    5. If iteratorRecord.[[done]] is true, let v be undefined.
+    [...]
+    8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+//- elems
+[x, y, z]
+//- vals
+[1, 2, 3]
+//- body
+assert.sameValue(x, 1);
+assert.sameValue(y, 2);
+assert.sameValue(z, 3);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-elem-init.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-elem-init.case
new file mode 100644
index 0000000000000000000000000000000000000000..15df36937e8fb5f34b257d686e3c30887d885d60
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-elem-init.case
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: BindingElement with array binding pattern and initializer is used
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingElement : BindingPatternInitializer opt
+
+    [...]
+    2. If iteratorRecord.[[done]] is true, let v be undefined.
+    3. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be ? GetValue(defaultValue).
+    4. Return the result of performing BindingInitialization of BindingPattern
+       with v and environment as the arguments.
+---*/
+
+//- elems
+[[x, y, z] = [4, 5, 6]]
+//- vals
+[]
+//- body
+assert.sameValue(x, 4);
+assert.sameValue(y, 5);
+assert.sameValue(z, 6);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-elem-iter.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-elem-iter.case
new file mode 100644
index 0000000000000000000000000000000000000000..b3668d61802b66188d6cfe75eff22abe0c6b7726
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-elem-iter.case
@@ -0,0 +1,28 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: BindingElement with array binding pattern and initializer is not used
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingElement : BindingPatternInitializer opt
+
+    1. If iteratorRecord.[[done]] is false, then
+       a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+       [...]
+       e. Else,
+          i. Let v be IteratorValue(next).
+          [...]
+    4. Return the result of performing BindingInitialization of BindingPattern
+       with v and environment as the arguments.
+---*/
+
+//- elems
+[[x, y, z] = [4, 5, 6]]
+//- vals
+[[7, 8, 9]]
+//- body
+assert.sameValue(x, 7);
+assert.sameValue(y, 8);
+assert.sameValue(z, 9);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-elision-init.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-elision-init.case
new file mode 100644
index 0000000000000000000000000000000000000000..49933f6364f2ec41390b51da80d78c86842f8a72
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-elision-init.case
@@ -0,0 +1,35 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: BindingElement with array binding pattern and initializer is used
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingElement : BindingPatternInitializer opt
+
+    [...]
+    2. If iteratorRecord.[[done]] is true, let v be undefined.
+    3. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be ? GetValue(defaultValue).
+    4. Return the result of performing BindingInitialization of BindingPattern
+       with v and environment as the arguments.
+features: [generators]
+---*/
+
+//- setup
+var first = 0;
+var second = 0;
+function* g() {
+  first += 1;
+  yield;
+  second += 1;
+};
+//- elems
+[[,] = g()]
+//- vals
+[]
+//- body
+assert.sameValue(first, 1);
+assert.sameValue(second, 0);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-elision-iter.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-elision-iter.case
new file mode 100644
index 0000000000000000000000000000000000000000..47da0accc961b84717c7b3114f31d704591db8f1
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-elision-iter.case
@@ -0,0 +1,32 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: BindingElement with array binding pattern and initializer is not used
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingElement : BindingPatternInitializer opt
+
+    1. If iteratorRecord.[[done]] is false, then
+       a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+       [...]
+       e. Else,
+          i. Let v be IteratorValue(next).
+          [...]
+    4. Return the result of performing BindingInitialization of BindingPattern
+       with v and environment as the arguments.
+features: [generators]
+---*/
+
+//- setup
+var callCount = 0;
+function* g() {
+  callCount += 1;
+};
+//- elems
+[[,] = g()]
+//- vals
+[[]]
+//- body
+assert.sameValue(callCount, 0);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-empty-init.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-empty-init.case
new file mode 100644
index 0000000000000000000000000000000000000000..df0c90fdb5f0a4e020c0a0f7b459364524f0e7ea
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-empty-init.case
@@ -0,0 +1,30 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: BindingElement with array binding pattern and initializer is used
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingElement : BindingPatternInitializer opt
+
+    [...]
+    2. If iteratorRecord.[[done]] is true, let v be undefined.
+    3. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be ? GetValue(defaultValue).
+    4. Return the result of performing BindingInitialization of BindingPattern
+       with v and environment as the arguments.
+---*/
+
+//- setup
+var initCount = 0;
+var iterCount = 0;
+var iter = function*() { iterCount += 1; }();
+//- elems
+[[] = function() { initCount += 1; return iter; }()]
+//- vals
+[]
+//- body
+assert.sameValue(initCount, 1);
+assert.sameValue(iterCount, 0);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-empty-iter.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-empty-iter.case
new file mode 100644
index 0000000000000000000000000000000000000000..b2c0aa1f591b21f71236e7e0183205abd6c69269
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-empty-iter.case
@@ -0,0 +1,28 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: BindingElement with array binding pattern and initializer is not used
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingElement : BindingPatternInitializer opt
+
+    1. If iteratorRecord.[[done]] is false, then
+       a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+       [...]
+       e. Else,
+          i. Let v be IteratorValue(next).
+          [...]
+    4. Return the result of performing BindingInitialization of BindingPattern
+       with v and environment as the arguments.
+---*/
+
+//- setup
+var initCount = 0;
+//- elems
+[[] = function() { initCount += 1; }()]
+//- vals
+[[23]]
+//- body
+assert.sameValue(initCount, 0);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-rest-init.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-rest-init.case
new file mode 100644
index 0000000000000000000000000000000000000000..18ac2bb2113c8cba35ba9459922eed6fe449b724
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-rest-init.case
@@ -0,0 +1,32 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: BindingElement with array binding pattern and initializer is used
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingElement : BindingPatternInitializer opt
+
+    [...]
+    2. If iteratorRecord.[[done]] is true, let v be undefined.
+    3. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be ? GetValue(defaultValue).
+    4. Return the result of performing BindingInitialization of BindingPattern
+       with v and environment as the arguments.
+---*/
+
+//- setup
+var values = [2, 1, 3];
+//- elems
+[[...x] = values]
+//- vals
+[]
+//- body
+assert(Array.isArray(x));
+assert.sameValue(x[0], 2);
+assert.sameValue(x[1], 1);
+assert.sameValue(x[2], 3);
+assert.sameValue(x.length, 3);
+assert.notSameValue(x, values);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-rest-iter.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-rest-iter.case
new file mode 100644
index 0000000000000000000000000000000000000000..63f77b64b3ab91921ed89182a90e3481c2b8b66f
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-rest-iter.case
@@ -0,0 +1,35 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: BindingElement with array binding pattern and initializer is not used
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingElement : BindingPatternInitializer opt
+
+    1. If iteratorRecord.[[done]] is false, then
+       a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+       [...]
+       e. Else,
+          i. Let v be IteratorValue(next).
+          [...]
+    4. Return the result of performing BindingInitialization of BindingPattern
+       with v and environment as the arguments.
+---*/
+
+//- setup
+var values = [2, 1, 3];
+var initCount = 0;
+//- elems
+[[...x] = function() { initCount += 1; }()]
+//- vals
+[values]
+//- body
+assert(Array.isArray(x));
+assert.sameValue(x[0], 2);
+assert.sameValue(x[1], 1);
+assert.sameValue(x[2], 3);
+assert.sameValue(x.length, 3);
+assert.notSameValue(x, values);
+assert.sameValue(initCount, 0);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-val-null.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-val-null.case
new file mode 100644
index 0000000000000000000000000000000000000000..abe6ac4f3de47fd2c257294657b3551d2371298c
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-ary-val-null.case
@@ -0,0 +1,32 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Nested array destructuring with a null value
+template: error
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingElement : BindingPattern Initializeropt
+
+    1. If iteratorRecord.[[done]] is false, then
+       [...]
+       e. Else
+          i. Let v be IteratorValue(next).
+          [...]
+    4. Return the result of performing BindingInitialization of BindingPattern
+       with v and environment as the arguments.
+
+    13.3.3.5 Runtime Semantics: BindingInitialization
+
+    BindingPattern : ArrayBindingPattern
+
+    1. Let iterator be GetIterator(value).
+    2. ReturnIfAbrupt(iterator).
+---*/
+
+//- elems
+[[x]]
+//- vals
+[null]
+//- error
+TypeError
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-exhausted.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-exhausted.case
new file mode 100644
index 0000000000000000000000000000000000000000..fbd4ffa0acddfdb999b121fb6efada298edc9d80
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-exhausted.case
@@ -0,0 +1,26 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Destructuring initializer with an exhausted iterator
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    5. If iteratorRecord.[[done]] is true, let v be undefined.
+    6. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be GetValue(defaultValue).
+       [...]
+    7. If environment is undefined, return PutValue(lhs, v).
+    8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+//- elems
+[x = 23]
+//- vals
+[]
+//- body
+assert.sameValue(x, 23);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-fn-name-arrow.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-fn-name-arrow.case
new file mode 100644
index 0000000000000000000000000000000000000000..0dda822299b2174bd18301dd3d86678685cecc4f
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-fn-name-arrow.case
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: SingleNameBinding does assign name to arrow functions
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    6. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be GetValue(defaultValue).
+       c. ReturnIfAbrupt(v).
+       d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+          [...]
+    7. If environment is undefined, return PutValue(lhs, v).
+    8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+//- elems
+[arrow = () => {}]
+//- vals
+[]
+//- body
+assert.sameValue(arrow.name, 'arrow');
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-fn-name-class.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-fn-name-class.case
new file mode 100644
index 0000000000000000000000000000000000000000..fd129368d4aee220126dce95ba487f60c14c10ea
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-fn-name-class.case
@@ -0,0 +1,29 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: SingleNameBinding assigns `name` to "anonymous" classes
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    6. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be GetValue(defaultValue).
+       c. ReturnIfAbrupt(v).
+       d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+          [...]
+    7. If environment is undefined, return PutValue(lhs, v).
+    8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+//- elems
+[cls = class {}, xCls = class X {}, xCls2 = class { static name() {} }]
+//- vals
+[]
+//- body
+assert.sameValue(cls.name, 'cls');
+assert.notSameValue(xCls.name, 'xCls');
+assert.notSameValue(xCls2.name, 'xCls2');
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-fn-name-cover.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-fn-name-cover.case
new file mode 100644
index 0000000000000000000000000000000000000000..40f16c07f239f1abd8a80fba01aa586857104ec2
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-fn-name-cover.case
@@ -0,0 +1,28 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: SingleNameBinding does assign name to "anonymous" functions "through" cover grammar
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    6. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be GetValue(defaultValue).
+       c. ReturnIfAbrupt(v).
+       d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+          [...]
+    7. If environment is undefined, return PutValue(lhs, v).
+    8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+//- elems
+[cover = (function () {}), xCover = (0, function() {})]
+//- vals
+[]
+//- body
+assert.sameValue(cover.name, 'cover');
+assert.notSameValue(xCover.name, 'xCover');
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-fn-name-fn.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-fn-name-fn.case
new file mode 100644
index 0000000000000000000000000000000000000000..d6b36ee6acc5a2613a704226beea33f8599dbaa4
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-fn-name-fn.case
@@ -0,0 +1,28 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: SingleNameBinding assigns name to "anonymous" functions
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    6. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be GetValue(defaultValue).
+       c. ReturnIfAbrupt(v).
+       d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+          [...]
+    7. If environment is undefined, return PutValue(lhs, v).
+    8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+//- elems
+[fn = function () {}, xFn = function x() {}]
+//- vals
+[]
+//- body
+assert.sameValue(fn.name, 'fn');
+assert.notSameValue(xFn.name, 'xFn');
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-fn-name-gen.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-fn-name-gen.case
new file mode 100644
index 0000000000000000000000000000000000000000..04587c07cd6eb9063fd279701d3c13b591732f48
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-fn-name-gen.case
@@ -0,0 +1,28 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: SingleNameBinding assigns name to "anonymous" generator functions
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    6. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be GetValue(defaultValue).
+       c. ReturnIfAbrupt(v).
+       d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+          [...]
+    7. If environment is undefined, return PutValue(lhs, v).
+    8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+//- elems
+[gen = function* () {}, xGen = function* x() {}]
+//- vals
+[]
+//- body
+assert.sameValue(gen.name, 'gen');
+assert.notSameValue(xGen.name, 'xGen');
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-hole.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-hole.case
new file mode 100644
index 0000000000000000000000000000000000000000..e34d9a1fd4a6c189bab0a8003236d16b5eb141d5
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-hole.case
@@ -0,0 +1,26 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Destructuring initializer with a "hole"
+template: default
+info: >
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    6. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be GetValue(defaultValue).
+       [...]
+    7. If environment is undefined, return PutValue(lhs, v).
+    8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+//- elems
+[x = 23]
+//- vals
+[,]
+//- body
+assert.sameValue(x, 23);
+// another statement
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-skipped.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-skipped.case
new file mode 100644
index 0000000000000000000000000000000000000000..803289ac0ea69a81d99f3dd4b619de4969b37a3e
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-skipped.case
@@ -0,0 +1,32 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Destructuring initializer is not evaluated when value is not `undefined`
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    6. If Initializer is present and v is undefined, then
+       [...]
+    7. If environment is undefined, return PutValue(lhs, v).
+    8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+//- setup
+var initCount = 0;
+function counter() {
+  initCount += 1;
+}
+//- elems
+[w = counter(), x = counter(), y = counter(), z = counter()]
+//- vals
+[null, 0, false, '']
+//- body
+assert.sameValue(w, null);
+assert.sameValue(x, 0);
+assert.sameValue(y, false);
+assert.sameValue(z, '');
+assert.sameValue(initCount, 0);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-throws.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-throws.case
new file mode 100644
index 0000000000000000000000000000000000000000..2b05bf7cd5b6b4de938097eb6584614e968d7d7a
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-throws.case
@@ -0,0 +1,23 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Destructuring initializer returns an abrupt completion
+template: error
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    6. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be GetValue(defaultValue).
+       c. ReturnIfAbrupt(v).
+---*/
+
+//- elems
+[x = (function() { throw new Test262Error(); })()]
+//- vals
+[undefined]
+//- error
+Test262Error
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-undef.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-undef.case
new file mode 100644
index 0000000000000000000000000000000000000000..1767bd23db7d0651094247c6a91aea076824297d
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-undef.case
@@ -0,0 +1,25 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Destructuring initializer with an undefined value
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    6. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be GetValue(defaultValue).
+       [...]
+    7. If environment is undefined, return PutValue(lhs, v).
+    8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+//- elems
+[x = 23]
+//- vals
+[undefined]
+//- body
+assert.sameValue(x, 23);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-unresolvable.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-unresolvable.case
new file mode 100644
index 0000000000000000000000000000000000000000..109063ea870e59729bcffeafd4c3ad9352ce7e84
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-init-unresolvable.case
@@ -0,0 +1,30 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Destructuring initializer is an unresolvable reference
+template: error
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    6. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be GetValue(defaultValue).
+       c. ReturnIfAbrupt(v).
+
+    6.2.3.1 GetValue (V)
+
+    1. ReturnIfAbrupt(V).
+    2. If Type(V) is not Reference, return V.
+    3. Let base be GetBase(V).
+    4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+//- elems
+[ x = unresolvableReference ]
+//- vals
+[]
+//- error
+ReferenceError
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-id-iter-complete.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-iter-complete.case
new file mode 100644
index 0000000000000000000000000000000000000000..93f3588e1d2c2c1786b91b437b7a966de0d3d7bc
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-iter-complete.case
@@ -0,0 +1,29 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: SingleNameBinding when value iteration completes
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    4. If iteratorRecord.[[done]] is false, then
+       a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+       b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+       c. ReturnIfAbrupt(next).
+       d. If next is false, set iteratorRecord.[[done]] to true.
+       e. Else,
+          [...]
+    5. If iteratorRecord.[[done]] is true, let v be undefined.
+    [...]
+    8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+//- elems
+[x]
+//- vals
+[]
+//- body
+assert.sameValue(x, undefined);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-id-iter-done.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-iter-done.case
new file mode 100644
index 0000000000000000000000000000000000000000..745eb0801996e0321df491d52a2e3293fbc372a4
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-iter-done.case
@@ -0,0 +1,24 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: SingleNameBinding when value iteration was completed previously
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    4. If iteratorRecord.[[done]] is false, then
+       [...]
+    5. If iteratorRecord.[[done]] is true, let v be undefined.
+    [...]
+    8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+//- elems
+[_, x]
+//- vals
+[]
+//- body
+assert.sameValue(x, undefined);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-id-iter-step-err.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-iter-step-err.case
new file mode 100644
index 0000000000000000000000000000000000000000..58feda279663f3e36878548f45fbf555ce32ce71
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-iter-step-err.case
@@ -0,0 +1,32 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Error forwarding when IteratorStep returns an abrupt completion
+template: error
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    4. If iteratorRecord.[[done]] is false, then
+       a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+       b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+       c. ReturnIfAbrupt(next).
+---*/
+
+//- setup
+var g = {};
+g[Symbol.iterator] = function() {
+  return {
+    next: function() {
+      throw new Test262Error();
+    }
+  };
+};
+//- elems
+[x]
+//- vals
+g
+//- error
+Test262Error
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-id-iter-val-err.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-iter-val-err.case
new file mode 100644
index 0000000000000000000000000000000000000000..e52c52a93d6ae83a46766cd1daf31b3e261c3fb4
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-iter-val-err.case
@@ -0,0 +1,43 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Error forwarding when IteratorValue returns an abrupt completion
+template: error
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    4. If iteratorRecord.[[done]] is false, then
+       a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+       b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+       c. ReturnIfAbrupt(next).
+       d. If next is false, set iteratorRecord.[[done]] to true.
+       e. Else,
+          i. Let v be IteratorValue(next).
+          ii. If v is an abrupt completion, set iteratorRecord.[[done]] to
+              true.
+          iii. ReturnIfAbrupt(v).
+---*/
+
+//- setup
+var poisonedValue = Object.defineProperty({}, 'value', {
+  get: function() {
+    throw new Test262Error();
+  }
+});
+var g = {};
+g[Symbol.iterator] = function() {
+  return {
+    next: function() {
+      return poisonedValue;
+    }
+  };
+};
+//- elems
+[x]
+//- vals
+g
+//- error
+Test262Error
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-id-iter-val.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-iter-val.case
new file mode 100644
index 0000000000000000000000000000000000000000..20a3e47ba41ab42f6f1825cc3cea745a4f3a9927
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-id-iter-val.case
@@ -0,0 +1,35 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: SingleNameBinding when value iteration was completed previously
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    4. If iteratorRecord.[[done]] is false, then
+       a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+       b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+       c. ReturnIfAbrupt(next).
+       d. If next is false, set iteratorRecord.[[done]] to true.
+       e. Else,
+          [...]
+          i. Let v be IteratorValue(next).
+          ii. If v is an abrupt completion, set
+              iteratorRecord.[[done]] to true.
+          iii. ReturnIfAbrupt(v).
+    5. If iteratorRecord.[[done]] is true, let v be undefined.
+    [...]
+    8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+//- elems
+[x, y, z]
+//- vals
+[1, 2, 3]
+//- body
+assert.sameValue(x, 1);
+assert.sameValue(y, 2);
+assert.sameValue(z, 3);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-obj-id-init.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-obj-id-init.case
new file mode 100644
index 0000000000000000000000000000000000000000..2133fc1fc3f3a6633ffe2e3ab1b4ce40636b803c
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-obj-id-init.case
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: BindingElement with object binding pattern and initializer is used
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingElement : BindingPatternInitializer opt
+
+    [...]
+    2. If iteratorRecord.[[done]] is true, let v be undefined.
+    3. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be ? GetValue(defaultValue).
+    4. Return the result of performing BindingInitialization of BindingPattern
+       with v and environment as the arguments.
+---*/
+
+//- elems
+[{ x, y, z } = { x: 44, y: 55, z: 66 }]
+//- vals
+[]
+//- body
+assert.sameValue(x, 44);
+assert.sameValue(y, 55);
+assert.sameValue(z, 66);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-obj-id.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-obj-id.case
new file mode 100644
index 0000000000000000000000000000000000000000..a8cf157efcd2a27fd9958386360d3f845ed185c8
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-obj-id.case
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: BindingElement with object binding pattern and initializer is not used
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingElement : BindingPatternInitializer opt
+
+    [...]
+    2. If iteratorRecord.[[done]] is true, let v be undefined.
+    3. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be ? GetValue(defaultValue).
+    4. Return the result of performing BindingInitialization of BindingPattern
+       with v and environment as the arguments.
+---*/
+
+//- elems
+[{ x, y, z } = { x: 44, y: 55, z: 66 }]
+//- vals
+[{ x: 11, y: 22, z: 33 }]
+//- body
+assert.sameValue(x, 11);
+assert.sameValue(y, 22);
+assert.sameValue(z, 33);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-obj-prop-id-init.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-obj-prop-id-init.case
new file mode 100644
index 0000000000000000000000000000000000000000..1ad7f3a6caf3593c3c98868267628cdc6af7699c
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-obj-prop-id-init.case
@@ -0,0 +1,37 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: BindingElement with object binding pattern and initializer is used
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingElement : BindingPatternInitializer opt
+
+    [...]
+    2. If iteratorRecord.[[done]] is true, let v be undefined.
+    3. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be ? GetValue(defaultValue).
+    4. Return the result of performing BindingInitialization of BindingPattern
+       with v and environment as the arguments.
+---*/
+
+//- elems
+[{ u: v, w: x, y: z } = { u: 444, w: 555, y: 666 }]
+//- vals
+[]
+//- body
+assert.sameValue(v, 444);
+assert.sameValue(x, 555);
+assert.sameValue(z, 666);
+
+assert.throws(ReferenceError, function() {
+  u;
+});
+assert.throws(ReferenceError, function() {
+  w;
+});
+assert.throws(ReferenceError, function() {
+  y;
+});
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-obj-prop-id.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-obj-prop-id.case
new file mode 100644
index 0000000000000000000000000000000000000000..8517cae5d715b5916d98ca7f7a9834fbc7603ba7
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-obj-prop-id.case
@@ -0,0 +1,37 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: BindingElement with object binding pattern and initializer is not used
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingElement : BindingPatternInitializer opt
+
+    [...]
+    2. If iteratorRecord.[[done]] is true, let v be undefined.
+    3. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be ? GetValue(defaultValue).
+    4. Return the result of performing BindingInitialization of BindingPattern
+       with v and environment as the arguments.
+---*/
+
+//- elems
+[{ u: v, w: x, y: z } = { u: 444, w: 555, y: 666 }]
+//- vals
+[{ u: 777, w: 888, y: 999 }]
+//- body
+assert.sameValue(v, 777);
+assert.sameValue(x, 888);
+assert.sameValue(z, 999);
+
+assert.throws(ReferenceError, function() {
+  u;
+});
+assert.throws(ReferenceError, function() {
+  w;
+});
+assert.throws(ReferenceError, function() {
+  y;
+});
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-obj-val-null.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-obj-val-null.case
new file mode 100644
index 0000000000000000000000000000000000000000..9f15b25aae80892909f1580ab231ff0707240db7
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-obj-val-null.case
@@ -0,0 +1,32 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Nested object destructuring with a null value
+template: error
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingElement : BindingPattern Initializeropt
+
+    1. If iteratorRecord.[[done]] is false, then
+       [...]
+       e. Else
+          i. Let v be IteratorValue(next).
+          [...]
+    4. Return the result of performing BindingInitialization of BindingPattern
+       with v and environment as the arguments.
+
+    13.3.3.5 Runtime Semantics: BindingInitialization
+
+    BindingPattern : ObjectBindingPattern
+
+    1. Let valid be RequireObjectCoercible(value).
+    2. ReturnIfAbrupt(valid).
+---*/
+
+//- elems
+[{ x }]
+//- vals
+[null]
+//- error
+TypeError
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elem-obj-val-undef.case b/src/dstr-binding-async-iteration/ary-ptrn-elem-obj-val-undef.case
new file mode 100644
index 0000000000000000000000000000000000000000..1f0c3aa990f2e0a0800a7c79b38b1afe651b074d
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elem-obj-val-undef.case
@@ -0,0 +1,32 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Nested object destructuring with a value of `undefined`
+template: error
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingElement : BindingPattern Initializeropt
+
+    1. If iteratorRecord.[[done]] is false, then
+       [...]
+       e. Else
+          i. Let v be IteratorValue(next).
+          [...]
+    4. Return the result of performing BindingInitialization of BindingPattern
+       with v and environment as the arguments.
+
+    13.3.3.5 Runtime Semantics: BindingInitialization
+
+    BindingPattern : ObjectBindingPattern
+
+    1. Let valid be RequireObjectCoercible(value).
+    2. ReturnIfAbrupt(valid).
+---*/
+
+//- elems
+[{ x }]
+//- vals
+[]
+//- error
+TypeError
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elision-exhausted.case b/src/dstr-binding-async-iteration/ary-ptrn-elision-exhausted.case
new file mode 100644
index 0000000000000000000000000000000000000000..1f3b1fd8e61028fc5b2ab521ad4a3903dbeee32d
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elision-exhausted.case
@@ -0,0 +1,31 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Elision accepts exhausted iterator
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    ArrayBindingPattern : [ Elision ]
+
+    1. Return the result of performing
+       IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+       as the argument.
+
+    12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+    Elision : ,
+
+    1. If iteratorRecord.[[done]] is false, then
+       [...]
+    2. Return NormalCompletion(empty).
+features: [generator]
+---*/
+
+//- setup
+var iter = function*() {}();
+iter.next();
+//- elems
+[,]
+//- vals
+iter
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elision-iter-close.case b/src/dstr-binding-async-iteration/ary-ptrn-elision-iter-close.case
new file mode 100644
index 0000000000000000000000000000000000000000..18c0046a3a416751d99eb99da2addc420cecae60
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elision-iter-close.case
@@ -0,0 +1,21 @@
+// Copyright (C) 2017 Mozilla Corporation. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+template: iter-close
+desc: >
+  The iterator is properly consumed by the destructuring pattern
+---*/
+
+//- setup
+const iter = (function* () {
+  yield;
+  yield;
+})();
+
+//- elems
+[,]
+//- iter
+iter
+//- assertions
+assert.sameValue(iter.next().done, true, 'iteration occurred as expected');
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elision-step-err.case b/src/dstr-binding-async-iteration/ary-ptrn-elision-step-err.case
new file mode 100644
index 0000000000000000000000000000000000000000..7f0b3789f1b93b139f011322b1d5731f99bbe110
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elision-step-err.case
@@ -0,0 +1,37 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Elision advances iterator and forwards abrupt completions
+template: error
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    ArrayBindingPattern : [ Elision ]
+
+    1. Return the result of performing
+       IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+       as the argument.
+
+    12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+    Elision : ,
+
+    1. If iteratorRecord.[[done]] is false, then
+       a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+       b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+       c. ReturnIfAbrupt(next).
+features: [generator]
+---*/
+
+//- setup
+var following = 0;
+var iter =function* () {
+  throw new Test262Error();
+  following += 1;
+}();
+//- elems
+[,]
+//- vals
+iter
+//- error
+Test262Error
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-elision.case b/src/dstr-binding-async-iteration/ary-ptrn-elision.case
new file mode 100644
index 0000000000000000000000000000000000000000..9784dea4f266a42ef92d9e7fa09e281bdc2d1f1d
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-elision.case
@@ -0,0 +1,42 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Elision advances iterator
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    ArrayBindingPattern : [ Elision ]
+
+    1. Return the result of performing
+       IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+       as the argument.
+
+    12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+    Elision : ,
+
+    1. If iteratorRecord.[[done]] is false, then
+       a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+       b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+       c. ReturnIfAbrupt(next).
+       d. If next is false, set iteratorRecord.[[done]] to true.
+    2. Return NormalCompletion(empty).
+features: [generator]
+---*/
+
+//- setup
+var first = 0;
+var second = 0;
+function* g() {
+  first += 1;
+  yield;
+  second += 1;
+};
+//- elems
+[,]
+//- vals
+g()
+//- body
+assert.sameValue(first, 1);
+assert.sameValue(second, 0);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-empty.case b/src/dstr-binding-async-iteration/ary-ptrn-empty.case
new file mode 100644
index 0000000000000000000000000000000000000000..49b126c225c074fd489d6b133e3390159ee2e065
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-empty.case
@@ -0,0 +1,25 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: No iteration occurs for an "empty" array binding pattern
+template: default
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    ArrayBindingPattern : [ ]
+
+    1. Return NormalCompletion(empty).
+features: [generators]
+---*/
+
+//- setup
+var iterations = 0;
+var iter = function*() {
+  iterations += 1;
+}();
+//- elems
+[]
+//- vals
+iter
+//- body
+assert.sameValue(iterations, 0);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-rest-ary-elem.case b/src/dstr-binding-async-iteration/ary-ptrn-rest-ary-elem.case
new file mode 100644
index 0000000000000000000000000000000000000000..a143fdf1d99bda9316a57466ba2d3bae28f13e24
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-rest-ary-elem.case
@@ -0,0 +1,48 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Rest element containing an array BindingElementList pattern
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingRestElement : ... BindingPattern
+
+    1. Let A be ArrayCreate(0).
+    [...]
+    3. Repeat
+       [...]
+       b. If iteratorRecord.[[done]] is true, then
+          i. Return the result of performing BindingInitialization of
+             BindingPattern with A and environment as the arguments.
+       [...]
+
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    4. If iteratorRecord.[[done]] is false, then
+       a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+       b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+       c. ReturnIfAbrupt(next).
+       d. If next is false, set iteratorRecord.[[done]] to true.
+       e. Else,
+          [...]
+          i. Let v be IteratorValue(next).
+          ii. If v is an abrupt completion, set
+              iteratorRecord.[[done]] to true.
+          iii. ReturnIfAbrupt(v).
+    5. If iteratorRecord.[[done]] is true, let v be undefined.
+    [...]
+    8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+//- elems
+[...[x, y, z]]
+//- vals
+[3, 4, 5]
+//- body
+assert.sameValue(x, 3);
+assert.sameValue(y, 4);
+assert.sameValue(z, 5);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-rest-ary-elision.case b/src/dstr-binding-async-iteration/ary-ptrn-rest-ary-elision.case
new file mode 100644
index 0000000000000000000000000000000000000000..dc6b008a6d832ebcc400f89f1e4399143619b3a0
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-rest-ary-elision.case
@@ -0,0 +1,55 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Rest element containing an elision
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingRestElement : ... BindingPattern
+
+    1. Let A be ArrayCreate(0).
+    [...]
+    3. Repeat
+       [...]
+       b. If iteratorRecord.[[done]] is true, then
+          i. Return the result of performing BindingInitialization of
+             BindingPattern with A and environment as the arguments.
+       [...]
+
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    ArrayBindingPattern : [ Elision ]
+
+    1. Return the result of performing
+       IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+       as the argument.
+
+    12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+    Elision : ,
+
+    1. If iteratorRecord.[[done]] is false, then
+       a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+       b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+       c. ReturnIfAbrupt(next).
+       d. If next is false, set iteratorRecord.[[done]] to true.
+    2. Return NormalCompletion(empty).
+features: [generators]
+---*/
+
+//- setup
+var first = 0;
+var second = 0;
+function* g() {
+  first += 1;
+  yield;
+  second += 1;
+};
+//- elems
+[...[,]]
+//- vals
+g()
+//- body
+assert.sameValue(first, 1);
+assert.sameValue(second, 1);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-rest-ary-empty.case b/src/dstr-binding-async-iteration/ary-ptrn-rest-ary-empty.case
new file mode 100644
index 0000000000000000000000000000000000000000..11994f99331b1f9fc3223b348da0b11ae9e9303f
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-rest-ary-empty.case
@@ -0,0 +1,38 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Rest element containing an "empty" array pattern
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingRestElement : ... BindingPattern
+
+    1. Let A be ArrayCreate(0).
+    [...]
+    3. Repeat
+       [...]
+       b. If iteratorRecord.[[done]] is true, then
+          i. Return the result of performing BindingInitialization of
+             BindingPattern with A and environment as the arguments.
+       [...]
+
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    ArrayBindingPattern : [ ]
+
+    1. Return NormalCompletion(empty).
+features: [generators]
+---*/
+
+//- setup
+var iterations = 0;
+var iter = function*() {
+  iterations += 1;
+}();
+//- elems
+[...[]]
+//- vals
+iter
+//- body
+assert.sameValue(iterations, 1);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-rest-ary-rest.case b/src/dstr-binding-async-iteration/ary-ptrn-rest-ary-rest.case
new file mode 100644
index 0000000000000000000000000000000000000000..c794f9b447af26783ae81c5a4db54898654995a7
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-rest-ary-rest.case
@@ -0,0 +1,34 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Rest element containing a rest element
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingRestElement : ... BindingPattern
+
+    1. Let A be ArrayCreate(0).
+    [...]
+    3. Repeat
+       [...]
+       b. If iteratorRecord.[[done]] is true, then
+          i. Return the result of performing BindingInitialization of
+             BindingPattern with A and environment as the arguments.
+       [...]
+---*/
+
+//- setup
+var values = [1, 2, 3];
+//- elems
+[...[...x]]
+//- vals
+values
+//- body
+assert(Array.isArray(x));
+assert.sameValue(x.length, 3);
+assert.sameValue(x[0], 1);
+assert.sameValue(x[1], 2);
+assert.sameValue(x[2], 3);
+assert.notSameValue(x, values);
+
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-rest-id-elision-next-err.case b/src/dstr-binding-async-iteration/ary-ptrn-rest-id-elision-next-err.case
new file mode 100644
index 0000000000000000000000000000000000000000..413ec0439875a9ec3ff5d2981a31ea02b975be2c
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-rest-id-elision-next-err.case
@@ -0,0 +1,28 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: error
+desc: Rest element following elision elements
+info: >
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    ArrayBindingPattern : [ Elisionopt BindingRestElement ]
+
+    1. If Elision is present, then
+       a. Let status be the result of performing
+          IteratorDestructuringAssignmentEvaluation of Elision with
+          iteratorRecord as the argument.
+       b. ReturnIfAbrupt(status).
+    2. Return the result of performing IteratorBindingInitialization for
+       BindingRestElement with iteratorRecord and environment as arguments.
+features: [generators]
+---*/
+
+//- setup
+var iter = (function*() { throw new Test262Error(); })();
+//- elems
+[, ...x]
+//- vals
+iter
+//- error
+Test262Error
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-rest-id-elision.case b/src/dstr-binding-async-iteration/ary-ptrn-rest-id-elision.case
new file mode 100644
index 0000000000000000000000000000000000000000..49780b19dca32bab3ed68ef1a9940e5a47f1822f
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-rest-id-elision.case
@@ -0,0 +1,32 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Rest element following elision elements
+info: >
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    ArrayBindingPattern : [ Elisionopt BindingRestElement ]
+
+    1. If Elision is present, then
+       a. Let status be the result of performing
+          IteratorDestructuringAssignmentEvaluation of Elision with
+          iteratorRecord as the argument.
+       b. ReturnIfAbrupt(status).
+    2. Return the result of performing IteratorBindingInitialization for
+       BindingRestElement with iteratorRecord and environment as arguments.
+---*/
+
+//- setup
+var values = [1, 2, 3, 4, 5];
+//- elems
+[ , , ...x]
+//- vals
+values
+//- body
+assert(Array.isArray(x));
+assert.sameValue(x.length, 3);
+assert.sameValue(x[0], 3);
+assert.sameValue(x[1], 4);
+assert.sameValue(x[2], 5);
+assert.notSameValue(x, values);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-rest-id-exhausted.case b/src/dstr-binding-async-iteration/ary-ptrn-rest-id-exhausted.case
new file mode 100644
index 0000000000000000000000000000000000000000..1476e3cb96fc82cf15d1c258e5cdd68ee7076506
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-rest-id-exhausted.case
@@ -0,0 +1,30 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: RestElement applied to an exhausted iterator
+info: >
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingRestElement : ... BindingIdentifier
+
+    1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+       environment).
+    2. ReturnIfAbrupt(lhs).
+    3. Let A be ArrayCreate(0).
+    4. Let n=0.
+    5. Repeat,
+       [...]
+       b. If iteratorRecord.[[done]] is true, then
+          i. If environment is undefined, return PutValue(lhs, A).
+          ii. Return InitializeReferencedBinding(lhs, A).
+features: [Symbol.iterator]
+---*/
+
+//- elems
+[, , ...x]
+//- vals
+[1, 2]
+//- body
+assert(Array.isArray(x));
+assert.sameValue(x.length, 0);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-rest-id-iter-close.case b/src/dstr-binding-async-iteration/ary-ptrn-rest-id-iter-close.case
new file mode 100644
index 0000000000000000000000000000000000000000..2127b9edafe282c14bde625d3ac9a73d039c06bb
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-rest-id-iter-close.case
@@ -0,0 +1,21 @@
+// Copyright (C) 2017 Mozilla Corporation. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+template: iter-close
+desc: >
+  The iterator is properly consumed by the destructuring pattern
+---*/
+
+//- setup
+const iter = (function* () {
+  yield;
+  yield;
+})();
+
+//- elems
+[...x]
+//- iter
+iter
+//- assertions
+assert.sameValue(iter.next().done, true, 'iteration occurred as expected');
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-rest-id-iter-step-err.case b/src/dstr-binding-async-iteration/ary-ptrn-rest-id-iter-step-err.case
new file mode 100644
index 0000000000000000000000000000000000000000..1bb3bd0637991c08c37b753a387de9e0f2e49f42
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-rest-id-iter-step-err.case
@@ -0,0 +1,38 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: error
+desc: Error forwarding when IteratorStep returns an abrupt completion
+info: >
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingRestElement : ... BindingIdentifier
+
+    1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+       environment).
+    2. ReturnIfAbrupt(lhs).
+    3. Let A be ArrayCreate(0).
+    4. Let n=0.
+    5. Repeat,
+       a. If iteratorRecord.[[done]] is false,
+          i. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+          ii. If next is an abrupt completion, set iteratorRecord.[[done]] to
+              true.
+          iii. ReturnIfAbrupt(next).
+features: [generators]
+---*/
+
+//- setup
+var first = 0;
+var second = 0;
+var iter = function*() {
+  first += 1;
+  throw new Test262Error();
+  second += 1;
+}();
+//- elems
+[...x]
+//- vals
+iter
+//- error
+Test262Error
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-rest-id-iter-val-err.case b/src/dstr-binding-async-iteration/ary-ptrn-rest-id-iter-val-err.case
new file mode 100644
index 0000000000000000000000000000000000000000..b3fb42708bce141f67775cac7c18272d6e61b5b4
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-rest-id-iter-val-err.case
@@ -0,0 +1,44 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: error
+desc: Error forwarding when IteratorValue returns an abrupt completion
+info: >
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingRestElement : ... BindingIdentifier
+
+    1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+       environment).
+    2. ReturnIfAbrupt(lhs).
+    3. Let A be ArrayCreate(0).
+    4. Let n=0.
+    5. Repeat,
+       [...]
+       c. Let nextValue be IteratorValue(next).
+       d. If nextValue is an abrupt completion, set iteratorRecord.[[done]] to
+          true.
+       e. ReturnIfAbrupt(nextValue).
+features: [Symbol.iterator]
+---*/
+
+//- setup
+var poisonedValue = Object.defineProperty({}, 'value', {
+  get: function() {
+    throw new Test262Error();
+  }
+});
+var iter = {};
+iter[Symbol.iterator] = function() {
+  return {
+    next: function() {
+      return poisonedValue;
+    }
+  };
+};
+//- elems
+[...x]
+//- vals
+iter
+//- error
+Test262Error
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-rest-id.case b/src/dstr-binding-async-iteration/ary-ptrn-rest-id.case
new file mode 100644
index 0000000000000000000000000000000000000000..1b0f446417436aa451c4e024e7e7437f601bd777
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-rest-id.case
@@ -0,0 +1,32 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Lone rest element
+info: >
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingRestElement : ... BindingIdentifier
+
+    [...]
+    3. Let A be ArrayCreate(0).
+    [...]
+    5. Repeat
+       [...]
+       f. Let status be CreateDataProperty(A, ToString (n), nextValue).
+       [...]
+---*/
+
+//- setup
+var values = [1, 2, 3];
+//- elems
+[...x]
+//- vals
+values
+//- body
+assert(Array.isArray(x));
+assert.sameValue(x.length, 3);
+assert.sameValue(x[0], 1);
+assert.sameValue(x[1], 2);
+assert.sameValue(x[2], 3);
+assert.notSameValue(x, values);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-rest-init-ary.case b/src/dstr-binding-async-iteration/ary-ptrn-rest-init-ary.case
new file mode 100644
index 0000000000000000000000000000000000000000..ab359ad3f39fa6d2cc9ca1f7068ba840aad8c787
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-rest-init-ary.case
@@ -0,0 +1,21 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Reset element (nested array pattern) does not support initializer
+negative:
+  phase: early
+  type: SyntaxError
+info: >
+    13.3.3 Destructuring Binding Patterns
+
+    ArrayBindingPattern[Yield] :
+        [ Elisionopt BindingRestElement[?Yield]opt ]
+        [ BindingElementList[?Yield] ]
+        [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+//- elems
+[...[ x ] = []]
+//- vals
+[]
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-rest-init-id.case b/src/dstr-binding-async-iteration/ary-ptrn-rest-init-id.case
new file mode 100644
index 0000000000000000000000000000000000000000..e5ab514c083d079f637e7919b885a62f4fce45de
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-rest-init-id.case
@@ -0,0 +1,21 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Reset element (identifier) does not support initializer
+negative:
+  phase: early
+  type: SyntaxError
+info: >
+    13.3.3 Destructuring Binding Patterns
+
+    ArrayBindingPattern[Yield] :
+        [ Elisionopt BindingRestElement[?Yield]opt ]
+        [ BindingElementList[?Yield] ]
+        [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+//- elems
+[...x = []]
+//- vals
+[]
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-rest-init-obj.case b/src/dstr-binding-async-iteration/ary-ptrn-rest-init-obj.case
new file mode 100644
index 0000000000000000000000000000000000000000..dc3cf7437a5ef1688611ac0558c6c793cac4865e
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-rest-init-obj.case
@@ -0,0 +1,21 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Reset element (nested object pattern) does not support initializer
+negative:
+  phase: early
+  type: SyntaxError
+info: >
+    13.3.3 Destructuring Binding Patterns
+
+    ArrayBindingPattern[Yield] :
+        [ Elisionopt BindingRestElement[?Yield]opt ]
+        [ BindingElementList[?Yield] ]
+        [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+//- elems
+[...{ x } = []]
+//- vals
+[]
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-rest-not-final-ary.case b/src/dstr-binding-async-iteration/ary-ptrn-rest-not-final-ary.case
new file mode 100644
index 0000000000000000000000000000000000000000..c76c83d0a4bf35c6a9b74ce4bb1f5692fb61159f
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-rest-not-final-ary.case
@@ -0,0 +1,21 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Rest element (array binding pattern) may not be followed by any element
+negative:
+  phase: early
+  type: SyntaxError
+info: >
+    13.3.3 Destructuring Binding Patterns
+
+    ArrayBindingPattern[Yield] :
+        [ Elisionopt BindingRestElement[?Yield]opt ]
+        [ BindingElementList[?Yield] ]
+        [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+//- elems
+[...[x], y]
+//- vals
+[1, 2, 3]
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-rest-not-final-id.case b/src/dstr-binding-async-iteration/ary-ptrn-rest-not-final-id.case
new file mode 100644
index 0000000000000000000000000000000000000000..962733013a22c95c9df3b758c154e473e76f2cfc
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-rest-not-final-id.case
@@ -0,0 +1,21 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Rest element (identifier) may not be followed by any element
+negative:
+  phase: early
+  type: SyntaxError
+info: >
+    13.3.3 Destructuring Binding Patterns
+
+    ArrayBindingPattern[Yield] :
+        [ Elisionopt BindingRestElement[?Yield]opt ]
+        [ BindingElementList[?Yield] ]
+        [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+//- elems
+[...x, y]
+//- vals
+[1, 2, 3]
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-rest-not-final-obj.case b/src/dstr-binding-async-iteration/ary-ptrn-rest-not-final-obj.case
new file mode 100644
index 0000000000000000000000000000000000000000..00c70507ead8b72ba85f84fca741ce92401f68a6
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-rest-not-final-obj.case
@@ -0,0 +1,21 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Rest element (object binding pattern) may not be followed by any element
+negative:
+  phase: early
+  type: SyntaxError
+info: >
+    13.3.3 Destructuring Binding Patterns
+
+    ArrayBindingPattern[Yield] :
+        [ Elisionopt BindingRestElement[?Yield]opt ]
+        [ BindingElementList[?Yield] ]
+        [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+//- elems
+[...{ x }, y]
+//- vals
+[1, 2, 3]
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-rest-obj-id.case b/src/dstr-binding-async-iteration/ary-ptrn-rest-obj-id.case
new file mode 100644
index 0000000000000000000000000000000000000000..fd42f56de532c4286e3c2335899a38de774a7212
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-rest-obj-id.case
@@ -0,0 +1,26 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Rest element containing an object binding pattern
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingRestElement : ... BindingPattern
+
+    1. Let A be ArrayCreate(0).
+    [...]
+    3. Repeat
+       [...]
+       b. If iteratorRecord.[[done]] is true, then
+          i. Return the result of performing BindingInitialization of
+             BindingPattern with A and environment as the arguments.
+       [...]
+---*/
+
+//- elems
+[...{ length }]
+//- vals
+[1, 2, 3]
+//- body
+assert.sameValue(length, 3);
diff --git a/src/dstr-binding-async-iteration/ary-ptrn-rest-obj-prop-id.case b/src/dstr-binding-async-iteration/ary-ptrn-rest-obj-prop-id.case
new file mode 100644
index 0000000000000000000000000000000000000000..3ad115023020029d41472bd237a220ad1c3a528f
--- /dev/null
+++ b/src/dstr-binding-async-iteration/ary-ptrn-rest-obj-prop-id.case
@@ -0,0 +1,34 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Rest element containing an object binding pattern
+info: |
+    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+    BindingRestElement : ... BindingPattern
+
+    1. Let A be ArrayCreate(0).
+    [...]
+    3. Repeat
+       [...]
+       b. If iteratorRecord.[[done]] is true, then
+          i. Return the result of performing BindingInitialization of
+             BindingPattern with A and environment as the arguments.
+       [...]
+---*/
+
+//- setup
+let length = "outer";
+//- elems
+[...{ 0: v, 1: w, 2: x, 3: y, length: z }]
+//- vals
+[7, 8, 9]
+//- body
+assert.sameValue(v, 7);
+assert.sameValue(w, 8);
+assert.sameValue(x, 9);
+assert.sameValue(y, undefined);
+assert.sameValue(z, 3);
+
+assert.sameValue(length, "outer", "the length prop is not set as a binding name");
diff --git a/src/dstr-binding/default/for-await-of-async-func-const-async.template b/src/dstr-binding-async-iteration/default/for-await-of-async-func-const-async.template
similarity index 100%
rename from src/dstr-binding/default/for-await-of-async-func-const-async.template
rename to src/dstr-binding-async-iteration/default/for-await-of-async-func-const-async.template
diff --git a/src/dstr-binding/default/for-await-of-async-func-const.template b/src/dstr-binding-async-iteration/default/for-await-of-async-func-const.template
similarity index 100%
rename from src/dstr-binding/default/for-await-of-async-func-const.template
rename to src/dstr-binding-async-iteration/default/for-await-of-async-func-const.template
diff --git a/src/dstr-binding/default/for-await-of-async-func-let-async.template b/src/dstr-binding-async-iteration/default/for-await-of-async-func-let-async.template
similarity index 100%
rename from src/dstr-binding/default/for-await-of-async-func-let-async.template
rename to src/dstr-binding-async-iteration/default/for-await-of-async-func-let-async.template
diff --git a/src/dstr-binding/default/for-await-of-async-func-let.template b/src/dstr-binding-async-iteration/default/for-await-of-async-func-let.template
similarity index 100%
rename from src/dstr-binding/default/for-await-of-async-func-let.template
rename to src/dstr-binding-async-iteration/default/for-await-of-async-func-let.template
diff --git a/src/dstr-binding/default/for-await-of-async-func-var-async.template b/src/dstr-binding-async-iteration/default/for-await-of-async-func-var-async.template
similarity index 100%
rename from src/dstr-binding/default/for-await-of-async-func-var-async.template
rename to src/dstr-binding-async-iteration/default/for-await-of-async-func-var-async.template
diff --git a/src/dstr-binding/default/for-await-of-async-func-var.template b/src/dstr-binding-async-iteration/default/for-await-of-async-func-var.template
similarity index 100%
rename from src/dstr-binding/default/for-await-of-async-func-var.template
rename to src/dstr-binding-async-iteration/default/for-await-of-async-func-var.template
diff --git a/src/dstr-binding/default/for-await-of-async-gen-const-async.template b/src/dstr-binding-async-iteration/default/for-await-of-async-gen-const-async.template
similarity index 100%
rename from src/dstr-binding/default/for-await-of-async-gen-const-async.template
rename to src/dstr-binding-async-iteration/default/for-await-of-async-gen-const-async.template
diff --git a/src/dstr-binding/default/for-await-of-async-gen-const.template b/src/dstr-binding-async-iteration/default/for-await-of-async-gen-const.template
similarity index 100%
rename from src/dstr-binding/default/for-await-of-async-gen-const.template
rename to src/dstr-binding-async-iteration/default/for-await-of-async-gen-const.template
diff --git a/src/dstr-binding/default/for-await-of-async-gen-let-async.template b/src/dstr-binding-async-iteration/default/for-await-of-async-gen-let-async.template
similarity index 100%
rename from src/dstr-binding/default/for-await-of-async-gen-let-async.template
rename to src/dstr-binding-async-iteration/default/for-await-of-async-gen-let-async.template
diff --git a/src/dstr-binding/default/for-await-of-async-gen-let.template b/src/dstr-binding-async-iteration/default/for-await-of-async-gen-let.template
similarity index 100%
rename from src/dstr-binding/default/for-await-of-async-gen-let.template
rename to src/dstr-binding-async-iteration/default/for-await-of-async-gen-let.template
diff --git a/src/dstr-binding/default/for-await-of-async-gen-var-async.template b/src/dstr-binding-async-iteration/default/for-await-of-async-gen-var-async.template
similarity index 100%
rename from src/dstr-binding/default/for-await-of-async-gen-var-async.template
rename to src/dstr-binding-async-iteration/default/for-await-of-async-gen-var-async.template
diff --git a/src/dstr-binding/default/for-await-of-async-gen-var.template b/src/dstr-binding-async-iteration/default/for-await-of-async-gen-var.template
similarity index 100%
rename from src/dstr-binding/default/for-await-of-async-gen-var.template
rename to src/dstr-binding-async-iteration/default/for-await-of-async-gen-var.template
diff --git a/src/dstr-binding/error/for-await-of-async-func-const.template b/src/dstr-binding-async-iteration/error/for-await-of-async-func-const.template
similarity index 100%
rename from src/dstr-binding/error/for-await-of-async-func-const.template
rename to src/dstr-binding-async-iteration/error/for-await-of-async-func-const.template
diff --git a/src/dstr-binding/error/for-await-of-async-func-let.template b/src/dstr-binding-async-iteration/error/for-await-of-async-func-let.template
similarity index 100%
rename from src/dstr-binding/error/for-await-of-async-func-let.template
rename to src/dstr-binding-async-iteration/error/for-await-of-async-func-let.template
diff --git a/src/dstr-binding/error/for-await-of-async-func-var.template b/src/dstr-binding-async-iteration/error/for-await-of-async-func-var.template
similarity index 100%
rename from src/dstr-binding/error/for-await-of-async-func-var.template
rename to src/dstr-binding-async-iteration/error/for-await-of-async-func-var.template
diff --git a/src/dstr-binding/error/for-await-of-async-gen-const.template b/src/dstr-binding-async-iteration/error/for-await-of-async-gen-const.template
similarity index 100%
rename from src/dstr-binding/error/for-await-of-async-gen-const.template
rename to src/dstr-binding-async-iteration/error/for-await-of-async-gen-const.template
diff --git a/src/dstr-binding/error/for-await-of-async-gen-let.template b/src/dstr-binding-async-iteration/error/for-await-of-async-gen-let.template
similarity index 100%
rename from src/dstr-binding/error/for-await-of-async-gen-let.template
rename to src/dstr-binding-async-iteration/error/for-await-of-async-gen-let.template
diff --git a/src/dstr-binding/error/for-await-of-async-gen-var.template b/src/dstr-binding-async-iteration/error/for-await-of-async-gen-var.template
similarity index 100%
rename from src/dstr-binding/error/for-await-of-async-gen-var.template
rename to src/dstr-binding-async-iteration/error/for-await-of-async-gen-var.template
diff --git a/src/dstr-binding/iter-close/for-await-of-async-func-const.template b/src/dstr-binding-async-iteration/iter-close/for-await-of-async-func-const.template
similarity index 100%
rename from src/dstr-binding/iter-close/for-await-of-async-func-const.template
rename to src/dstr-binding-async-iteration/iter-close/for-await-of-async-func-const.template
diff --git a/src/dstr-binding/iter-close/for-await-of-async-func-let.template b/src/dstr-binding-async-iteration/iter-close/for-await-of-async-func-let.template
similarity index 100%
rename from src/dstr-binding/iter-close/for-await-of-async-func-let.template
rename to src/dstr-binding-async-iteration/iter-close/for-await-of-async-func-let.template
diff --git a/src/dstr-binding/iter-close/for-await-of-async-func-var.template b/src/dstr-binding-async-iteration/iter-close/for-await-of-async-func-var.template
similarity index 100%
rename from src/dstr-binding/iter-close/for-await-of-async-func-var.template
rename to src/dstr-binding-async-iteration/iter-close/for-await-of-async-func-var.template
diff --git a/src/dstr-binding/iter-close/for-await-of-async-gen-const.template b/src/dstr-binding-async-iteration/iter-close/for-await-of-async-gen-const.template
similarity index 100%
rename from src/dstr-binding/iter-close/for-await-of-async-gen-const.template
rename to src/dstr-binding-async-iteration/iter-close/for-await-of-async-gen-const.template
diff --git a/src/dstr-binding/iter-close/for-await-of-async-gen-let.template b/src/dstr-binding-async-iteration/iter-close/for-await-of-async-gen-let.template
similarity index 100%
rename from src/dstr-binding/iter-close/for-await-of-async-gen-let.template
rename to src/dstr-binding-async-iteration/iter-close/for-await-of-async-gen-let.template
diff --git a/src/dstr-binding/iter-close/for-await-of-async-gen-var.template b/src/dstr-binding-async-iteration/iter-close/for-await-of-async-gen-var.template
similarity index 100%
rename from src/dstr-binding/iter-close/for-await-of-async-gen-var.template
rename to src/dstr-binding-async-iteration/iter-close/for-await-of-async-gen-var.template
diff --git a/src/dstr-binding-async-iteration/obj-init-null.case b/src/dstr-binding-async-iteration/obj-init-null.case
new file mode 100644
index 0000000000000000000000000000000000000000..0772e36f770a6e1af7df662f64018946c592d438
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-init-null.case
@@ -0,0 +1,19 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: error
+desc: Value specifed for object binding pattern must be object coercible (null)
+info: |
+    Runtime Semantics: BindingInitialization
+
+    ObjectBindingPattern : { }
+
+    1. Return NormalCompletion(empty).
+---*/
+
+//- elems
+{}
+//- vals
+null
+//- error
+TypeError
diff --git a/src/dstr-binding-async-iteration/obj-init-undefined.case b/src/dstr-binding-async-iteration/obj-init-undefined.case
new file mode 100644
index 0000000000000000000000000000000000000000..f41405f6fef3ddcd9d6a9167fe6f3eea14e3dac7
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-init-undefined.case
@@ -0,0 +1,19 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: error
+desc: Value specifed for object binding pattern must be object coercible (undefined)
+info: |
+    Runtime Semantics: BindingInitialization
+
+    ObjectBindingPattern : { }
+
+    1. Return NormalCompletion(empty).
+---*/
+
+//- elems
+{}
+//- vals
+undefined
+//- error
+TypeError
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-empty.case b/src/dstr-binding-async-iteration/obj-ptrn-empty.case
new file mode 100644
index 0000000000000000000000000000000000000000..97ecebd34704d0a00efb3b34198fe81e2f9f5dfa
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-empty.case
@@ -0,0 +1,26 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: No property access occurs for an "empty" object binding pattern
+info: |
+    Runtime Semantics: BindingInitialization
+
+    ObjectBindingPattern : { }
+
+    1. Return NormalCompletion(empty).
+---*/
+
+//- setup
+var accessCount = 0;
+var obj = Object.defineProperty({}, 'attr', {
+  get: function() {
+    accessCount += 1;
+  }
+});
+//- elems
+{}
+//- vals
+obj
+//- body
+assert.sameValue(accessCount, 0);
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-id-get-value-err.case b/src/dstr-binding-async-iteration/obj-ptrn-id-get-value-err.case
new file mode 100644
index 0000000000000000000000000000000000000000..68ae3348af633e8fe390b3f17ebde289f1190fe1
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-id-get-value-err.case
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: error
+desc: Error thrown when accessing the corresponding property of the value object
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    4. Let v be GetV(value, propertyName).
+    5. ReturnIfAbrupt(v).
+---*/
+
+//- setup
+var poisonedProperty = Object.defineProperty({}, 'poisoned', {
+  get: function() {
+    throw new Test262Error();
+  }
+});
+//- elems
+{ poisoned }
+//- vals
+poisonedProperty
+//- error
+Test262Error
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-id-init-fn-name-arrow.case b/src/dstr-binding-async-iteration/obj-ptrn-id-init-fn-name-arrow.case
new file mode 100644
index 0000000000000000000000000000000000000000..55cc1ad0ba3ee9ff865a1cbf7f003dae59aed9b3
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-id-init-fn-name-arrow.case
@@ -0,0 +1,26 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: SingleNameBinding assigns `name` to arrow functions
+template: default
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    6. If Initializer is present and v is undefined, then
+       [...]
+       d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+          i. Let hasNameProperty be HasOwnProperty(v, "name").
+          ii. ReturnIfAbrupt(hasNameProperty).
+          iii. If hasNameProperty is false, perform SetFunctionName(v,
+               bindingId).
+---*/
+
+//- elems
+{ arrow = () => {} }
+//- vals
+{}
+//- body
+assert.sameValue(arrow.name, 'arrow');
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-id-init-fn-name-class.case b/src/dstr-binding-async-iteration/obj-ptrn-id-init-fn-name-class.case
new file mode 100644
index 0000000000000000000000000000000000000000..2b5a385dda12ad2f27c8726df9be2fb095ac29f2
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-id-init-fn-name-class.case
@@ -0,0 +1,28 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: SingleNameBinding assigns `name` to "anonymous" classes
+template: default
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    6. If Initializer is present and v is undefined, then
+       [...]
+       d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+          i. Let hasNameProperty be HasOwnProperty(v, "name").
+          ii. ReturnIfAbrupt(hasNameProperty).
+          iii. If hasNameProperty is false, perform SetFunctionName(v,
+               bindingId).
+---*/
+
+//- elems
+{ cls = class {}, xCls = class X {}, xCls2 = class { static name() {} } }
+//- vals
+{}
+//- body
+assert.sameValue(cls.name, 'cls');
+assert.notSameValue(xCls.name, 'xCls');
+assert.notSameValue(xCls2.name, 'xCls2');
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-id-init-fn-name-cover.case b/src/dstr-binding-async-iteration/obj-ptrn-id-init-fn-name-cover.case
new file mode 100644
index 0000000000000000000000000000000000000000..624b00fce0ab0ed951127f4a34044b1239beb49b
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-id-init-fn-name-cover.case
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: SingleNameBinding assigns `name` to "anonymous" functions "through" cover grammar
+template: default
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    6. If Initializer is present and v is undefined, then
+       [...]
+       d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+          i. Let hasNameProperty be HasOwnProperty(v, "name").
+          ii. ReturnIfAbrupt(hasNameProperty).
+          iii. If hasNameProperty is false, perform SetFunctionName(v,
+               bindingId).
+---*/
+
+//- elems
+{ cover = (function () {}), xCover = (0, function() {})  }
+//- vals
+{}
+//- body
+assert.sameValue(cover.name, 'cover');
+assert.notSameValue(xCover.name, 'xCover');
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-id-init-fn-name-fn.case b/src/dstr-binding-async-iteration/obj-ptrn-id-init-fn-name-fn.case
new file mode 100644
index 0000000000000000000000000000000000000000..d6130cc9a669294abf78a6d1c4b5d09491b1cb75
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-id-init-fn-name-fn.case
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: SingleNameBinding assigns name to "anonymous" functions
+template: default
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    6. If Initializer is present and v is undefined, then
+       [...]
+       d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+          i. Let hasNameProperty be HasOwnProperty(v, "name").
+          ii. ReturnIfAbrupt(hasNameProperty).
+          iii. If hasNameProperty is false, perform SetFunctionName(v,
+               bindingId).
+---*/
+
+//- elems
+{ fn = function () {}, xFn = function x() {} }
+//- vals
+{}
+//- body
+assert.sameValue(fn.name, 'fn');
+assert.notSameValue(xFn.name, 'xFn');
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-id-init-fn-name-gen.case b/src/dstr-binding-async-iteration/obj-ptrn-id-init-fn-name-gen.case
new file mode 100644
index 0000000000000000000000000000000000000000..977d9f08d9baa95eecf969531c5d764f7a4db765
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-id-init-fn-name-gen.case
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: SingleNameBinding assigns name to "anonymous" generator functions
+template: default
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    6. If Initializer is present and v is undefined, then
+       [...]
+       d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+          i. Let hasNameProperty be HasOwnProperty(v, "name").
+          ii. ReturnIfAbrupt(hasNameProperty).
+          iii. If hasNameProperty is false, perform SetFunctionName(v,
+               bindingId).
+---*/
+
+//- elems
+{ gen = function* () {}, xGen = function* x() {} }
+//- vals
+{}
+//- body
+assert.sameValue(gen.name, 'gen');
+assert.notSameValue(xGen.name, 'xGen');
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-id-init-skipped.case b/src/dstr-binding-async-iteration/obj-ptrn-id-init-skipped.case
new file mode 100644
index 0000000000000000000000000000000000000000..ef10476d53ce046b03792fbf5cc1bebc55bfb1ae
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-id-init-skipped.case
@@ -0,0 +1,31 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Destructuring initializer is not evaluated when value is not `undefined`
+template: default
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    6. If Initializer is present and v is undefined, then
+       [...]
+    [...]
+---*/
+
+//- setup
+var initCount = 0;
+function counter() {
+  initCount += 1;
+}
+//- elems
+{ w = counter(), x = counter(), y = counter(), z = counter() }
+//- vals
+{ w: null, x: 0, y: false, z: '' }
+//- body
+assert.sameValue(w, null);
+assert.sameValue(x, 0);
+assert.sameValue(y, false);
+assert.sameValue(z, '');
+assert.sameValue(initCount, 0);
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-id-init-throws.case b/src/dstr-binding-async-iteration/obj-ptrn-id-init-throws.case
new file mode 100644
index 0000000000000000000000000000000000000000..e67f63480e106669edf466928285349c897b9c3f
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-id-init-throws.case
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: error
+desc: Error thrown when evaluating the initializer
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    6. If Initializer is present and v is undefined, then
+       a. Let  defaultValue be the result of evaluating Initializer.
+       b. Let v be GetValue(defaultValue).
+       c. ReturnIfAbrupt(v).
+---*/
+
+//- setup
+function thrower() {
+  throw new Test262Error();
+}
+//- elems
+{ x = thrower() }
+//- vals
+{}
+//- error
+Test262Error
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-id-init-unresolvable.case b/src/dstr-binding-async-iteration/obj-ptrn-id-init-unresolvable.case
new file mode 100644
index 0000000000000000000000000000000000000000..dd6d9dc839894e0844f879d64acd4017a19dd7d9
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-id-init-unresolvable.case
@@ -0,0 +1,30 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Destructuring initializer is an unresolvable reference
+template: error
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    6. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be GetValue(defaultValue).
+       c. ReturnIfAbrupt(v).
+
+    6.2.3.1 GetValue (V)
+
+    1. ReturnIfAbrupt(V).
+    2. If Type(V) is not Reference, return V.
+    3. Let base be GetBase(V).
+    4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+//- elems
+{ x = unresolvableReference }
+//- vals
+{}
+//- error
+ReferenceError
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-id-trailing-comma.case b/src/dstr-binding-async-iteration/obj-ptrn-id-trailing-comma.case
new file mode 100644
index 0000000000000000000000000000000000000000..5dc0cbe68ad784c3b3314ce5e7f66a3fb338e8d3
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-id-trailing-comma.case
@@ -0,0 +1,20 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Trailing comma is allowed following BindingPropertyList
+info: |
+    13.3.3 Destructuring Binding Patterns
+
+    ObjectBindingPattern[Yield] :
+        { }
+        { BindingPropertyList[?Yield] }
+        { BindingPropertyList[?Yield] , }
+---*/
+
+//- elems
+{ x, }
+//- vals
+{ x: 23 }
+//- body
+assert.sameValue(x, 23);
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-list-err.case b/src/dstr-binding-async-iteration/obj-ptrn-list-err.case
new file mode 100644
index 0000000000000000000000000000000000000000..73dc15e7df80b3e225e33b2147cfa7f951aede63
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-list-err.case
@@ -0,0 +1,26 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: error
+desc: Binding property list evaluation is interrupted by an abrupt completion
+info: |
+    13.3.3.5 Runtime Semantics: BindingInitialization
+
+    BindingPropertyList : BindingPropertyList , BindingProperty
+
+    1. Let status be the result of performing BindingInitialization for
+       BindingPropertyList using value and environment as arguments.
+    2. ReturnIfAbrupt(status).
+---*/
+
+//- setup
+var initCount = 0;
+function thrower() {
+  throw new Test262Error();
+}
+//- elems
+{ a, b = thrower(), c = ++initCount }
+//- vals
+{}
+//- error
+Test262Error
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-prop-ary-init.case b/src/dstr-binding-async-iteration/obj-ptrn-prop-ary-init.case
new file mode 100644
index 0000000000000000000000000000000000000000..41ffaa1ac630d3417c570abc445083fefa9376ba
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-prop-ary-init.case
@@ -0,0 +1,29 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Object binding pattern with "nested" array binding pattern using initializer
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    [...]
+    3. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be GetValue(defaultValue).
+       c. ReturnIfAbrupt(v).
+    4. Return the result of performing BindingInitialization for BindingPattern
+       passing v and environment as arguments.
+---*/
+
+//- elems
+{ w: [x, y, z] = [4, 5, 6] }
+//- vals
+{}
+//- body
+assert.sameValue(x, 4);
+assert.sameValue(y, 5);
+assert.sameValue(z, 6);
+
+assert.throws(ReferenceError, function() {
+  w;
+});
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-prop-ary-trailing-comma.case b/src/dstr-binding-async-iteration/obj-ptrn-prop-ary-trailing-comma.case
new file mode 100644
index 0000000000000000000000000000000000000000..17007b54cf19160208ce5508c2d4dfe5af908bd3
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-prop-ary-trailing-comma.case
@@ -0,0 +1,20 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Trailing comma is allowed following BindingPropertyList
+info: |
+    13.3.3 Destructuring Binding Patterns
+
+    ObjectBindingPattern[Yield] :
+        { }
+        { BindingPropertyList[?Yield] }
+        { BindingPropertyList[?Yield] , }
+---*/
+
+//- elems
+{ x: [y], }
+//- vals
+{ x: [45] }
+//- body
+assert.sameValue(y,45);
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-prop-ary-value-null.case b/src/dstr-binding-async-iteration/obj-ptrn-prop-ary-value-null.case
new file mode 100644
index 0000000000000000000000000000000000000000..abe84e43f7ff8bbc3fdf74ee336a0cbc2bfb4717
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-prop-ary-value-null.case
@@ -0,0 +1,21 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: error
+desc: Object binding pattern with "nested" array binding pattern taking the `null` value
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    [...]
+    3. If Initializer is present and v is undefined, then
+       [...]
+    4. Return the result of performing BindingInitialization for BindingPattern
+       passing v and environment as arguments.
+---*/
+
+//- elems
+{ w: [x, y, z] = [4, 5, 6] }
+//- vals
+{ w: null }
+//- error
+TypeError
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-prop-ary.case b/src/dstr-binding-async-iteration/obj-ptrn-prop-ary.case
new file mode 100644
index 0000000000000000000000000000000000000000..254c8f06ba3c7d1f10a301f761f3ca5e0c5dae7c
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-prop-ary.case
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Object binding pattern with "nested" array binding pattern not using initializer
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    [...]
+    3. If Initializer is present and v is undefined, then
+       [...]
+    4. Return the result of performing BindingInitialization for BindingPattern
+       passing v and environment as arguments.
+---*/
+
+//- elems
+{ w: [x, y, z] = [4, 5, 6] }
+//- vals
+{ w: [7, undefined, ] }
+//- body
+assert.sameValue(x, 7);
+assert.sameValue(y, undefined);
+assert.sameValue(z, undefined);
+
+assert.throws(ReferenceError, function() {
+  w;
+});
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-prop-eval-err.case b/src/dstr-binding-async-iteration/obj-ptrn-prop-eval-err.case
new file mode 100644
index 0000000000000000000000000000000000000000..9721474c368a1416b577af9a396c7e8c3963b84f
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-prop-eval-err.case
@@ -0,0 +1,24 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Evaluation of property name returns an abrupt completion
+template: error
+info: |
+    13.3.3.5 Runtime Semantics: BindingInitialization
+
+    BindingProperty : PropertyName : BindingElement
+
+    1. Let P be the result of evaluating PropertyName
+    2. ReturnIfAbrupt(P).
+---*/
+
+//- setup
+function thrower() {
+  throw new Test262Error();
+}
+//- elems
+{ [thrower()]: x }
+//- vals
+{}
+//- error
+Test262Error
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-prop-id-get-value-err.case b/src/dstr-binding-async-iteration/obj-ptrn-prop-id-get-value-err.case
new file mode 100644
index 0000000000000000000000000000000000000000..3851240d084fe24670e9a436e1070775888e397e
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-prop-id-get-value-err.case
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Error thrown when accessing the corresponding property of the value object
+template: error
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    BindingElement : BindingPattern Initializeropt
+
+    1. Let v be GetV(value, propertyName).
+    2. ReturnIfAbrupt(v).
+---*/
+
+//- setup
+var initEvalCount = 0;
+var poisonedProperty = Object.defineProperty({}, 'poisoned', {
+  get: function() {
+    throw new Test262Error();
+  }
+});
+//- elems
+{ poisoned: x = ++initEvalCount }
+//- vals
+poisonedProperty
+//- error
+Test262Error
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-prop-id-init-skipped.case b/src/dstr-binding-async-iteration/obj-ptrn-prop-id-init-skipped.case
new file mode 100644
index 0000000000000000000000000000000000000000..49ec6684f2e2443164d9644eda7cdb961d533c9e
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-prop-id-init-skipped.case
@@ -0,0 +1,43 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Destructuring initializer is not evaluated when value is not `undefined`
+template: default
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    BindingElement : BindingPattern Initializeropt
+
+    [...]
+    3. If Initializer is present and v is undefined, then
+    [...]
+---*/
+
+//- setup
+var initCount = 0;
+function counter() {
+  initCount += 1;
+}
+//- elems
+{ s: t = counter(), u: v = counter(), w: x = counter(), y: z = counter() }
+//- vals
+{ s: null, u: 0, w: false, y: '' }
+//- body
+assert.sameValue(t, null);
+assert.sameValue(v, 0);
+assert.sameValue(x, false);
+assert.sameValue(z, '');
+assert.sameValue(initCount, 0);
+
+assert.throws(ReferenceError, function() {
+  s;
+});
+assert.throws(ReferenceError, function() {
+  u;
+});
+assert.throws(ReferenceError, function() {
+  w;
+});
+assert.throws(ReferenceError, function() {
+  y;
+});
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-prop-id-init-throws.case b/src/dstr-binding-async-iteration/obj-ptrn-prop-id-init-throws.case
new file mode 100644
index 0000000000000000000000000000000000000000..e878fc6f3a8a3c3106288926c54a941df03433fe
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-prop-id-init-throws.case
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: error
+desc: Error thrown when evaluating the initializer
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    BindingElement : BindingPattern Initializeropt
+
+    [...]
+    3. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be GetValue(defaultValue).
+       c. ReturnIfAbrupt(v).
+---*/
+
+//- setup
+function thrower() {
+  throw new Test262Error();
+}
+//- elems
+{ x: y = thrower() }
+//- vals
+{}
+//- error
+Test262Error
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-prop-id-init-unresolvable.case b/src/dstr-binding-async-iteration/obj-ptrn-prop-id-init-unresolvable.case
new file mode 100644
index 0000000000000000000000000000000000000000..d11f68d9df50f1db653ec5c1ad8a732dc67b7cdb
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-prop-id-init-unresolvable.case
@@ -0,0 +1,30 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+desc: Destructuring initializer is an unresolvable reference
+template: error
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    BindingElement : BindingPattern Initializeropt
+
+    [...]
+    3. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be GetValue(defaultValue).
+       c. ReturnIfAbrupt(v).
+
+    6.2.3.1 GetValue (V)
+
+    1. ReturnIfAbrupt(V).
+    2. If Type(V) is not Reference, return V.
+    3. Let base be GetBase(V).
+    4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+//- elems
+{ x: y = unresolvableReference }
+//- vals
+{}
+//- error
+ReferenceError
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-prop-id-init.case b/src/dstr-binding-async-iteration/obj-ptrn-prop-id-init.case
new file mode 100644
index 0000000000000000000000000000000000000000..5b6723f746a2d1692175a2b8e56b508a48ef5b44
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-prop-id-init.case
@@ -0,0 +1,23 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Binding as specified via property name, identifier, and initializer
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+//- elems
+{ x: y = 33 }
+//- vals
+{ }
+//- body
+assert.sameValue(y, 33);
+assert.throws(ReferenceError, function() {
+  x;
+});
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-prop-id-trailing-comma.case b/src/dstr-binding-async-iteration/obj-ptrn-prop-id-trailing-comma.case
new file mode 100644
index 0000000000000000000000000000000000000000..cee4bc057781fc079a063dc30ca4f1eba7b7003e
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-prop-id-trailing-comma.case
@@ -0,0 +1,24 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Trailing comma is allowed following BindingPropertyList
+info: |
+    13.3.3 Destructuring Binding Patterns
+
+    ObjectBindingPattern[Yield] :
+        { }
+        { BindingPropertyList[?Yield] }
+        { BindingPropertyList[?Yield] , }
+---*/
+
+//- elems
+{ x: y, }
+//- vals
+{ x: 23 }
+//- body
+assert.sameValue(y, 23);
+
+assert.throws(ReferenceError, function() {
+  x;
+});
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-prop-id.case b/src/dstr-binding-async-iteration/obj-ptrn-prop-id.case
new file mode 100644
index 0000000000000000000000000000000000000000..ebd065297629cf910d48cc9346fcc77b2ab30d65
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-prop-id.case
@@ -0,0 +1,23 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Binding as specified via property name and identifier
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    SingleNameBinding : BindingIdentifier Initializeropt
+
+    [...]
+    8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+//- elems
+{ x: y }
+//- vals
+{ x: 23 }
+//- body
+assert.sameValue(y, 23);
+assert.throws(ReferenceError, function() {
+  x;
+});
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-prop-obj-init.case b/src/dstr-binding-async-iteration/obj-ptrn-prop-obj-init.case
new file mode 100644
index 0000000000000000000000000000000000000000..cc6da66b45534746fa3a2a59691bc6668c0a4494
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-prop-obj-init.case
@@ -0,0 +1,29 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Object binding pattern with "nested" object binding pattern using initializer
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    [...]
+    3. If Initializer is present and v is undefined, then
+       a. Let defaultValue be the result of evaluating Initializer.
+       b. Let v be GetValue(defaultValue).
+       c. ReturnIfAbrupt(v).
+    4. Return the result of performing BindingInitialization for BindingPattern
+       passing v and environment as arguments.
+---*/
+
+//- elems
+{ w: { x, y, z } = { x: 4, y: 5, z: 6 } }
+//- vals
+{ w: undefined }
+//- body
+assert.sameValue(x, 4);
+assert.sameValue(y, 5);
+assert.sameValue(z, 6);
+
+assert.throws(ReferenceError, function() {
+  w;
+});
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-prop-obj-value-null.case b/src/dstr-binding-async-iteration/obj-ptrn-prop-obj-value-null.case
new file mode 100644
index 0000000000000000000000000000000000000000..828049f9a0aa8a6f258ffe47c4583ab1887ff585
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-prop-obj-value-null.case
@@ -0,0 +1,21 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: error
+desc: Object binding pattern with "nested" object binding pattern taking the `null` value
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    [...]
+    3. If Initializer is present and v is undefined, then
+       [...]
+    4. Return the result of performing BindingInitialization for BindingPattern
+       passing v and environment as arguments.
+---*/
+
+//- elems
+{ w: { x, y, z } = { x: 4, y: 5, z: 6 } }
+//- vals
+{ w: null }
+//- error
+TypeError
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-prop-obj-value-undef.case b/src/dstr-binding-async-iteration/obj-ptrn-prop-obj-value-undef.case
new file mode 100644
index 0000000000000000000000000000000000000000..6c4582af3dc0c1557fee93092a150c209faa97f0
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-prop-obj-value-undef.case
@@ -0,0 +1,21 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: error
+desc: Object binding pattern with "nested" object binding pattern taking the `null` value
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    [...]
+    3. If Initializer is present and v is undefined, then
+       [...]
+    4. Return the result of performing BindingInitialization for BindingPattern
+       passing v and environment as arguments.
+---*/
+
+//- elems
+{ w: { x, y, z } = undefined }
+//- vals
+{ }
+//- error
+TypeError
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-prop-obj.case b/src/dstr-binding-async-iteration/obj-ptrn-prop-obj.case
new file mode 100644
index 0000000000000000000000000000000000000000..da412ccd6a39b55d0fbe5d8abfe5420b678b2b80
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-prop-obj.case
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+template: default
+desc: Object binding pattern with "nested" object binding pattern not using initializer
+info: |
+    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+    [...]
+    3. If Initializer is present and v is undefined, then
+       [...]
+    4. Return the result of performing BindingInitialization for BindingPattern
+       passing v and environment as arguments.
+---*/
+
+//- elems
+{ w: { x, y, z } = { x: 4, y: 5, z: 6 } }
+//- vals
+{ w: { x: undefined, z: 7 } }
+//- body
+assert.sameValue(x, undefined);
+assert.sameValue(y, undefined);
+assert.sameValue(z, 7);
+
+assert.throws(ReferenceError, function() {
+  w;
+});
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-rest-getter.case b/src/dstr-binding-async-iteration/obj-ptrn-rest-getter.case
new file mode 100644
index 0000000000000000000000000000000000000000..c5360e5e5e8b4677180931d2377a75b00e334e2a
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-rest-getter.case
@@ -0,0 +1,26 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+desc: >
+    Getter is called when obj is being deconstructed to a rest Object
+template: default
+esid: pending
+includes: [propertyHelper.js]
+features: [object-rest]
+---*/
+
+//- setup
+var count = 0;
+//- elems
+{...x}
+//- vals
+{ get v() { count++; return 2; } }
+//- body
+assert.sameValue(x.v, 2);
+assert.sameValue(count, 1);
+
+verifyEnumerable(x, "v");
+verifyWritable(x, "v");
+verifyConfigurable(x, "v");
+
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-rest-nested-obj.case b/src/dstr-binding-async-iteration/obj-ptrn-rest-nested-obj.case
new file mode 100644
index 0000000000000000000000000000000000000000..8fb0bb2d119ede5699650dd88578efbee5e7ad34
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-rest-nested-obj.case
@@ -0,0 +1,25 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+desc: >
+    When DestructuringAssignmentTarget is an object literal, it should be parsed
+    parsed as a DestructuringAssignmentPattern and evaluated as a destructuring
+    assignment.
+template: default
+esid: pending
+features: [object-rest]
+---*/
+
+//- setup
+var obj = {a: 3, b: 4};
+//- elems
+{a, b, ...{c, e}}
+//- vals
+{a: 1, b: 2, c: 3, d: 4, e: 5}
+//- body
+assert.sameValue(a, 1);
+assert.sameValue(b, 2);
+assert.sameValue(c, 3);
+assert.sameValue(e, 5);
+
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-rest-obj-nested-rest.case b/src/dstr-binding-async-iteration/obj-ptrn-rest-obj-nested-rest.case
new file mode 100644
index 0000000000000000000000000000000000000000..a6eb8c024d4dad66bd265370f5404936c6fa054d
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-rest-obj-nested-rest.case
@@ -0,0 +1,34 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+desc: >
+    When DestructuringAssignmentTarget is an object literal, it should be parsed
+    parsed as a DestructuringAssignmentPattern and evaluated as a destructuring
+    assignment and object rest desconstruction is allowed in that case.
+template: default
+esid: pending
+includes: [propertyHelper.js]
+features: [object-rest]
+---*/
+
+//- elems
+{a, b, ...{c, ...rest}}
+//- vals
+{a: 1, b: 2, c: 3, d: 4, e: 5}
+//- body
+assert.sameValue(a, 1);
+assert.sameValue(b, 2);
+assert.sameValue(c, 3);
+
+assert.sameValue(rest.d, 4);
+assert.sameValue(rest.e, 5);
+
+verifyEnumerable(rest, "d");
+verifyWritable(rest, "d");
+verifyConfigurable(rest, "d");
+
+verifyEnumerable(rest, "e");
+verifyWritable(rest, "e");
+verifyConfigurable(rest, "e");
+
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-rest-obj-own-property.case b/src/dstr-binding-async-iteration/obj-ptrn-rest-obj-own-property.case
new file mode 100644
index 0000000000000000000000000000000000000000..71c375adc89928db1296f089c8243fd91fa7d2f0
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-rest-obj-own-property.case
@@ -0,0 +1,24 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+desc: >
+    Rest object contains just soruce object's own properties
+template: default
+esid: pending
+includes: [propertyHelper.js]
+features: [object-rest]
+---*/
+
+//- setup
+var o = Object.create({ x: 1, y: 2 });
+o.z = 3;
+//- elems
+{ x, ...{y , z} }
+//- vals
+o
+//- body
+assert.sameValue(x, 1);
+assert.sameValue(y, undefined);
+assert.sameValue(z, 3);
+
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-rest-skip-non-enumerable.case b/src/dstr-binding-async-iteration/obj-ptrn-rest-skip-non-enumerable.case
new file mode 100644
index 0000000000000000000000000000000000000000..869ffd2419f58008768845737b24dfb26a1fdc2e
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-rest-skip-non-enumerable.case
@@ -0,0 +1,32 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+desc: >
+    Rest object doesn't contain non-enumerable properties
+template: default
+esid: pending
+includes: [propertyHelper.js]
+features: [object-rest]
+---*/
+
+//- setup
+var o = {a: 3, b: 4};
+Object.defineProperty(o, "x", { value: 4, enumerable: false });
+//- elems
+{...rest}
+//- vals
+o
+//- body
+assert.sameValue(rest.a, 3);
+assert.sameValue(rest.b, 4);
+assert.sameValue(rest.x, undefined);
+
+verifyEnumerable(rest, "a");
+verifyWritable(rest, "a");
+verifyConfigurable(rest, "a");
+
+verifyEnumerable(rest, "b");
+verifyWritable(rest, "b");
+verifyConfigurable(rest, "b");
+
diff --git a/src/dstr-binding-async-iteration/obj-ptrn-rest-val-obj.case b/src/dstr-binding-async-iteration/obj-ptrn-rest-val-obj.case
new file mode 100644
index 0000000000000000000000000000000000000000..0379ddd944e784118466e10c6428a55008710512
--- /dev/null
+++ b/src/dstr-binding-async-iteration/obj-ptrn-rest-val-obj.case
@@ -0,0 +1,30 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+desc: >
+    Rest object contains just unextracted data
+template: default
+esid: pending
+includes: [propertyHelper.js]
+features: [object-rest]
+---*/
+
+//- elems
+{a, b, ...rest}
+//- vals
+{x: 1, y: 2, a: 5, b: 3}
+//- body
+assert.sameValue(rest.x, 1);
+assert.sameValue(rest.y, 2);
+assert.sameValue(rest.a, undefined);
+assert.sameValue(rest.b, undefined);
+
+verifyEnumerable(rest, "x");
+verifyWritable(rest, "x");
+verifyConfigurable(rest, "x");
+
+verifyEnumerable(rest, "y");
+verifyWritable(rest, "y");
+verifyConfigurable(rest, "y");
+