diff --git a/test/language/expressions/assignment/target-cover-id.js b/test/language/expressions/assignment/target-cover-id.js
new file mode 100644
index 0000000000000000000000000000000000000000..6abdf7301a9a87d6ea9630a80094d28cdbd9e0a6
--- /dev/null
+++ b/test/language/expressions/assignment/target-cover-id.js
@@ -0,0 +1,28 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-assignment-operators-static-semantics-early-errors
+es6id: 12.14.1
+es5id: 11.1.6_A3_T5
+description: Applied to a "covered" IdentifierReference
+info: |
+  AssignmentExpression : LeftHandSideExpression = AssignmentExpression
+
+  - It is an early Reference Error if LeftHandSideExpression is neither an
+    ObjectLiteral nor an ArrayLiteral and IsValidSimpleAssignmentTarget of
+    LeftHandSideExpression is false.
+
+  Static Semantics: IsValidSimpleAssignmentTarget
+
+  IdentifierReference : Identifier
+
+  1. If this IdentifierReference is contained in strict mode code and
+     StringValue of Identifier is "eval" or "arguments", return false.
+  2. Return true.
+---*/
+
+var x;
+
+(x) = 1;
+
+assert.sameValue(x, 1);
diff --git a/test/language/expressions/assignment/target-cover-newtarget.js b/test/language/expressions/assignment/target-cover-newtarget.js
new file mode 100644
index 0000000000000000000000000000000000000000..2442cac6e95f51e8b68754801c6aef03523a240d
--- /dev/null
+++ b/test/language/expressions/assignment/target-cover-newtarget.js
@@ -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.
+/*---
+esid: sec-assignment-operators-static-semantics-early-errors
+es6id: 12.14.1
+description: Applied to a "covered" new.target
+info: |
+  AssignmentExpression : LeftHandSideExpression = AssignmentExpression
+
+  - It is an early Reference Error if LeftHandSideExpression is neither an
+    ObjectLiteral nor an ArrayLiteral and IsValidSimpleAssignmentTarget of
+    LeftHandSideExpression is false.
+
+  12.3.1.5 Static Semantics: IsValidSimpleAssignmentTarget
+
+  NewTarget:
+
+  new.target
+
+  1. Return false.
+negative: ReferenceError
+---*/
+
+function f() {
+  (new.target) = 1;
+}
diff --git a/test/language/expressions/assignment/target-cover-yieldexpr.js b/test/language/expressions/assignment/target-cover-yieldexpr.js
new file mode 100644
index 0000000000000000000000000000000000000000..0cfad36ebc1390c343351c58d9d5583fba05e5ae
--- /dev/null
+++ b/test/language/expressions/assignment/target-cover-yieldexpr.js
@@ -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.
+/*---
+esid: sec-assignment-operators-static-semantics-early-errors
+es6id: 12.14.1
+description: Applied to a "covered" YieldExpression
+info: |
+  AssignmentExpression : LeftHandSideExpression = AssignmentExpression
+
+  - It is an early Reference Error if LeftHandSideExpression is neither an
+    ObjectLiteral nor an ArrayLiteral and IsValidSimpleAssignmentTarget of
+    LeftHandSideExpression is false.
+
+  12.15.3 Static Semantics: IsValidSimpleAssignmentTarget
+
+  AssignmentExpression:
+    YieldExpression
+    ArrowFunction
+    LeftHandSideExpression = AssignmentExpression
+    LeftHandSideExpression AssignmentOperator AssignmentExpression
+
+  1. Return false.
+features: [generators]
+negative: ReferenceError
+---*/
+
+function* g() {
+  (yield) = 1;
+}
diff --git a/test/language/expressions/assignment/target-newtarget.js b/test/language/expressions/assignment/target-newtarget.js
new file mode 100644
index 0000000000000000000000000000000000000000..b4ebd6b5967d75f3df4ce0b4fdfdfaac90e9546d
--- /dev/null
+++ b/test/language/expressions/assignment/target-newtarget.js
@@ -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.
+/*---
+esid: sec-assignment-operators-static-semantics-early-errors
+es6id: 12.14.1
+description: Applied to new.target
+info: |
+  AssignmentExpression : LeftHandSideExpression = AssignmentExpression
+
+  - It is an early Reference Error if LeftHandSideExpression is neither an
+    ObjectLiteral nor an ArrayLiteral and IsValidSimpleAssignmentTarget of
+    LeftHandSideExpression is false.
+
+  12.3.1.5 Static Semantics: IsValidSimpleAssignmentTarget
+
+  NewTarget:
+
+  new.target
+
+  1. Return false.
+negative: ReferenceError
+---*/
+
+function f() {
+  new.target = 1;
+}
diff --git a/test/language/expressions/grouping/S11.1.6_A3_T5.js b/test/language/expressions/grouping/S11.1.6_A3_T5.js
deleted file mode 100644
index 9f0e0ada1dec3c4ef8d5d2b7221218744ffcdf6c..0000000000000000000000000000000000000000
--- a/test/language/expressions/grouping/S11.1.6_A3_T5.js
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright 2009 the Sputnik authors.  All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-info: "\"This\" operator only evaluates Expression"
-es5id: 11.1.6_A3_T5
-description: Using grouping operator in declaration of variables
----*/
-
-//CHECK#1
-var x;
-(x) = 1;
-if (x !== 1) {
-  $ERROR('#1: (x) = 1; x === 1. Actual: ' + (x));
-}
-
-//CHECK#2
-var y = 1; (y)++; ++(y); (y)--; --(y);
-if (y !== 1) {
-  $ERROR('#2: var y = 1; (y)++; ++(y); (y)--; --(y); y === 1. Actual: ' + (y));
-}
diff --git a/test/language/expressions/postfix-decrement/target-cover-id.js b/test/language/expressions/postfix-decrement/target-cover-id.js
new file mode 100644
index 0000000000000000000000000000000000000000..446b5cb0f8353afa82e0cbf4fe0a1941559ec957
--- /dev/null
+++ b/test/language/expressions/postfix-decrement/target-cover-id.js
@@ -0,0 +1,29 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-postfix-expressions-static-semantics-early-errors
+es6id: 12.4.1
+es5id: 11.1.6_A3_T5
+description: Applied to a "covered" IdentifierReference
+info: |
+  PostfixExpression :
+    LeftHandSideExpression ++
+    LeftHandSideExpression --
+
+  - It is an early Reference Error if IsValidSimpleAssignmentTarget of
+    LeftHandSideExpression is false.
+
+  Static Semantics: IsValidSimpleAssignmentTarget
+
+  IdentifierReference : Identifier
+
+  1. If this IdentifierReference is contained in strict mode code and
+     StringValue of Identifier is "eval" or "arguments", return false.
+  2. Return true.
+---*/
+
+var y = 1;
+
+(y)--;
+
+assert.sameValue(y, 0);
diff --git a/test/language/expressions/postfix-decrement/target-cover-newtarget.js b/test/language/expressions/postfix-decrement/target-cover-newtarget.js
new file mode 100644
index 0000000000000000000000000000000000000000..55e3789d408103768e9fb01a08f15182bce2d693
--- /dev/null
+++ b/test/language/expressions/postfix-decrement/target-cover-newtarget.js
@@ -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.
+/*---
+esid: sec-postfix-expressions-static-semantics-early-errors
+es6id: 12.4.1
+description: Applied to a "covered" new.target
+info: |
+  PostfixExpression :
+    LeftHandSideExpression ++
+    LeftHandSideExpression --
+
+  - It is an early Reference Error if IsValidSimpleAssignmentTarget of
+    LeftHandSideExpression is false.
+
+  12.3.1.5 Static Semantics: IsValidSimpleAssignmentTarget
+
+  NewTarget:
+
+  new.target
+
+  1. Return false.
+negative: ReferenceError
+---*/
+
+function f() {
+  (new.target)--;
+}
diff --git a/test/language/expressions/postfix-decrement/target-cover-yieldexpr.js b/test/language/expressions/postfix-decrement/target-cover-yieldexpr.js
new file mode 100644
index 0000000000000000000000000000000000000000..4d7448ae89834f6e791cccde625f22fe2e21f49b
--- /dev/null
+++ b/test/language/expressions/postfix-decrement/target-cover-yieldexpr.js
@@ -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.
+/*---
+esid: sec-postfix-expressions-static-semantics-early-errors
+es6id: 12.4.1
+description: Applied to a "covered" YieldExpression
+info: |
+  PostfixExpression :
+    LeftHandSideExpression ++
+    LeftHandSideExpression --
+
+  - It is an early Reference Error if IsValidSimpleAssignmentTarget of
+    LeftHandSideExpression is false.
+
+  12.15.3 Static Semantics: IsValidSimpleAssignmentTarget
+
+  AssignmentExpression:
+    YieldExpression
+    ArrowFunction
+    LeftHandSideExpression = AssignmentExpression
+    LeftHandSideExpression AssignmentOperator AssignmentExpression
+
+  1. Return false.
+features: [generators]
+negative: ReferenceError
+---*/
+
+function* g() {
+  (yield)--;
+}
diff --git a/test/language/expressions/postfix-decrement/target-newtarget.js b/test/language/expressions/postfix-decrement/target-newtarget.js
new file mode 100644
index 0000000000000000000000000000000000000000..bddee29f1ed2b259b6905bd7088e5a31cce319e1
--- /dev/null
+++ b/test/language/expressions/postfix-decrement/target-newtarget.js
@@ -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.
+/*---
+esid: sec-postfix-expressions-static-semantics-early-errors
+es6id: 12.4.1
+description: Applied to new.target
+info: |
+  PostfixExpression :
+    LeftHandSideExpression ++
+    LeftHandSideExpression --
+
+  - It is an early Reference Error if IsValidSimpleAssignmentTarget of
+    LeftHandSideExpression is false.
+
+  12.3.1.5 Static Semantics: IsValidSimpleAssignmentTarget
+
+  NewTarget:
+
+  new.target
+
+  1. Return false.
+negative: ReferenceError
+---*/
+
+function f() {
+  new.target--;
+}
diff --git a/test/language/expressions/postfix-increment/target-cover-id.js b/test/language/expressions/postfix-increment/target-cover-id.js
new file mode 100644
index 0000000000000000000000000000000000000000..b01ce5f05ed48fa733e8d62fdf757871e3fff4d5
--- /dev/null
+++ b/test/language/expressions/postfix-increment/target-cover-id.js
@@ -0,0 +1,29 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-postfix-expressions-static-semantics-early-errors
+es6id: 12.4.1
+es5id: 11.1.6_A3_T5
+description: Applied to a "covered" IdentifierReference
+info: |
+  PostfixExpression :
+    LeftHandSideExpression ++
+    LeftHandSideExpression --
+
+  - It is an early Reference Error if IsValidSimpleAssignmentTarget of
+    LeftHandSideExpression is false.
+
+  Static Semantics: IsValidSimpleAssignmentTarget
+
+  IdentifierReference : Identifier
+
+  1. If this IdentifierReference is contained in strict mode code and
+     StringValue of Identifier is "eval" or "arguments", return false.
+  2. Return true.
+---*/
+
+var y = 1;
+
+(y)++;
+
+assert.sameValue(y, 2);
diff --git a/test/language/expressions/postfix-increment/target-cover-newtarget.js b/test/language/expressions/postfix-increment/target-cover-newtarget.js
new file mode 100644
index 0000000000000000000000000000000000000000..7168110cf022295446d271b216ea74863ebfd0bb
--- /dev/null
+++ b/test/language/expressions/postfix-increment/target-cover-newtarget.js
@@ -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.
+/*---
+esid: sec-postfix-expressions-static-semantics-early-errors
+es6id: 12.4.1
+description: Applied to a "covered" new.target
+info: |
+  PostfixExpression :
+    LeftHandSideExpression ++
+    LeftHandSideExpression --
+
+  - It is an early Reference Error if IsValidSimpleAssignmentTarget of
+    LeftHandSideExpression is false.
+
+  12.3.1.5 Static Semantics: IsValidSimpleAssignmentTarget
+
+  NewTarget:
+
+  new.target
+
+  1. Return false.
+negative: ReferenceError
+---*/
+
+function f() {
+  (new.target)++;
+}
diff --git a/test/language/expressions/postfix-increment/target-cover-yieldexpr.js b/test/language/expressions/postfix-increment/target-cover-yieldexpr.js
new file mode 100644
index 0000000000000000000000000000000000000000..3fdc200d01cbe8cec1ea9586245cce08258e39dd
--- /dev/null
+++ b/test/language/expressions/postfix-increment/target-cover-yieldexpr.js
@@ -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.
+/*---
+esid: sec-postfix-expressions-static-semantics-early-errors
+es6id: 12.4.1
+description: Applied to a "covered" YieldExpression
+info: |
+  PostfixExpression :
+    LeftHandSideExpression ++
+    LeftHandSideExpression --
+
+  - It is an early Reference Error if IsValidSimpleAssignmentTarget of
+    LeftHandSideExpression is false.
+
+  12.15.3 Static Semantics: IsValidSimpleAssignmentTarget
+
+  AssignmentExpression:
+    YieldExpression
+    ArrowFunction
+    LeftHandSideExpression = AssignmentExpression
+    LeftHandSideExpression AssignmentOperator AssignmentExpression
+
+  1. Return false.
+features: [generators]
+negative: ReferenceError
+---*/
+
+function* g() {
+  (yield)++;
+}
diff --git a/test/language/expressions/postfix-increment/target-newtarget.js b/test/language/expressions/postfix-increment/target-newtarget.js
new file mode 100644
index 0000000000000000000000000000000000000000..1cc7a2d226285348c7247ba99f65dda2fa997b69
--- /dev/null
+++ b/test/language/expressions/postfix-increment/target-newtarget.js
@@ -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.
+/*---
+esid: sec-postfix-expressions-static-semantics-early-errors
+es6id: 12.4.1
+description: Applied to new.target
+info: |
+  PostfixExpression :
+    LeftHandSideExpression ++
+    LeftHandSideExpression --
+
+  - It is an early Reference Error if IsValidSimpleAssignmentTarget of
+    LeftHandSideExpression is false.
+
+  12.3.1.5 Static Semantics: IsValidSimpleAssignmentTarget
+
+  NewTarget:
+
+  new.target
+
+  1. Return false.
+negative: ReferenceError
+---*/
+
+function f() {
+  new.target++;
+}
diff --git a/test/language/expressions/prefix-decrement/target-cover-id.js b/test/language/expressions/prefix-decrement/target-cover-id.js
new file mode 100644
index 0000000000000000000000000000000000000000..476c4f2fed3644c3fbc1eb27b6883f95e054efd8
--- /dev/null
+++ b/test/language/expressions/prefix-decrement/target-cover-id.js
@@ -0,0 +1,29 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-unary-operators-static-semantics-early-errors
+es6id: 12.5.1
+es5id: 11.1.6_A3_T5
+description: Applied to a "covered" IdentifierReference
+info: |
+  UnaryExpression :
+    ++ UnaryExpression
+    -- UnaryExpression
+
+  - It is an early Reference Error if IsValidSimpleAssignmentTarget of
+    UnaryExpression is false.
+
+  Static Semantics: IsValidSimpleAssignmentTarget
+
+  IdentifierReference : Identifier
+
+  1. If this IdentifierReference is contained in strict mode code and
+     StringValue of Identifier is "eval" or "arguments", return false.
+  2. Return true.
+---*/
+
+var y = 1;
+
+--(y);
+
+assert.sameValue(y, 0);
diff --git a/test/language/expressions/prefix-decrement/target-cover-newtarget.js b/test/language/expressions/prefix-decrement/target-cover-newtarget.js
new file mode 100644
index 0000000000000000000000000000000000000000..3037aca67abd2c3ad92078eeda2b27b274597ad3
--- /dev/null
+++ b/test/language/expressions/prefix-decrement/target-cover-newtarget.js
@@ -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.
+/*---
+esid: sec-unary-operators-static-semantics-early-errors
+es6id: 12.5.1
+description: Applied to a "covered" new.target
+info: |
+  UnaryExpression :
+    ++ UnaryExpression
+    -- UnaryExpression
+
+  - It is an early Reference Error if IsValidSimpleAssignmentTarget of
+    UnaryExpression is false.
+
+  12.3.1.5 Static Semantics: IsValidSimpleAssignmentTarget
+
+  NewTarget:
+
+  new.target
+
+  1. Return false.
+negative: ReferenceError
+---*/
+
+function f() {
+  --(new.target);
+}
diff --git a/test/language/expressions/prefix-decrement/target-cover-yieldexpr.js b/test/language/expressions/prefix-decrement/target-cover-yieldexpr.js
new file mode 100644
index 0000000000000000000000000000000000000000..fbf6cbb2ccbe161da37d134fb3414397ce64ea96
--- /dev/null
+++ b/test/language/expressions/prefix-decrement/target-cover-yieldexpr.js
@@ -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.
+/*---
+esid: sec-unary-operators-static-semantics-early-errors
+es6id: 12.5.1
+description: Applied to a "covered" YieldExpression
+info: |
+  UnaryExpression :
+    ++ UnaryExpression
+    -- UnaryExpression
+
+  - It is an early Reference Error if IsValidSimpleAssignmentTarget of
+    UnaryExpression is false.
+
+  12.15.3 Static Semantics: IsValidSimpleAssignmentTarget
+
+  AssignmentExpression:
+    YieldExpression
+    ArrowFunction
+    LeftHandSideExpression = AssignmentExpression
+    LeftHandSideExpression AssignmentOperator AssignmentExpression
+
+  1. Return false.
+features: [generators]
+negative: ReferenceError
+---*/
+
+function* g() {
+  --(yield);
+}
diff --git a/test/language/expressions/prefix-decrement/target-newtarget.js b/test/language/expressions/prefix-decrement/target-newtarget.js
new file mode 100644
index 0000000000000000000000000000000000000000..4f8d1ecbef5eedd6f207666f39f05f30114087c4
--- /dev/null
+++ b/test/language/expressions/prefix-decrement/target-newtarget.js
@@ -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.
+/*---
+esid: sec-unary-operators-static-semantics-early-errors
+es6id: 12.5.1
+description: Applied to new.target
+info: |
+  UnaryExpression :
+    ++ UnaryExpression
+    -- UnaryExpression
+
+  - It is an early Reference Error if IsValidSimpleAssignmentTarget of
+    UnaryExpression is false.
+
+  12.3.1.5 Static Semantics: IsValidSimpleAssignmentTarget
+
+  NewTarget:
+
+  new.target
+
+  1. Return false.
+negative: ReferenceError
+---*/
+
+function f() {
+  --new.target;
+}
diff --git a/test/language/expressions/prefix-increment/target-cover-id.js b/test/language/expressions/prefix-increment/target-cover-id.js
new file mode 100644
index 0000000000000000000000000000000000000000..1c4b8d91f84e333b4902ff2261b5c1b565f5bcd6
--- /dev/null
+++ b/test/language/expressions/prefix-increment/target-cover-id.js
@@ -0,0 +1,29 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-unary-operators-static-semantics-early-errors
+es6id: 12.5.1
+es5id: 11.1.6_A3_T5
+description: Applied to a "covered" IdentifierReference
+info: |
+  UnaryExpression :
+    ++ UnaryExpression
+    -- UnaryExpression
+
+  - It is an early Reference Error if IsValidSimpleAssignmentTarget of
+    UnaryExpression is false.
+
+  Static Semantics: IsValidSimpleAssignmentTarget
+
+  IdentifierReference : Identifier
+
+  1. If this IdentifierReference is contained in strict mode code and
+     StringValue of Identifier is "eval" or "arguments", return false.
+  2. Return true.
+---*/
+
+var y = 1;
+
+++(y);
+
+assert.sameValue(y, 2);
diff --git a/test/language/expressions/prefix-increment/target-cover-newtarget.js b/test/language/expressions/prefix-increment/target-cover-newtarget.js
new file mode 100644
index 0000000000000000000000000000000000000000..113b4a2074a28df482e0c41c08eeef967c02acea
--- /dev/null
+++ b/test/language/expressions/prefix-increment/target-cover-newtarget.js
@@ -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.
+/*---
+esid: sec-unary-operators-static-semantics-early-errors
+es6id: 12.5.1
+description: Applied to a "covered" new.target
+info: |
+  UnaryExpression :
+    ++ UnaryExpression
+    -- UnaryExpression
+
+  - It is an early Reference Error if IsValidSimpleAssignmentTarget of
+    UnaryExpression is false.
+
+  12.3.1.5 Static Semantics: IsValidSimpleAssignmentTarget
+
+  NewTarget:
+
+  new.target
+
+  1. Return false.
+negative: ReferenceError
+---*/
+
+function f() {
+  ++(new.target);
+}
diff --git a/test/language/expressions/prefix-increment/target-cover-yieldexpr.js b/test/language/expressions/prefix-increment/target-cover-yieldexpr.js
new file mode 100644
index 0000000000000000000000000000000000000000..10ee8602e117f483defc0be2f2bc6fab966a579e
--- /dev/null
+++ b/test/language/expressions/prefix-increment/target-cover-yieldexpr.js
@@ -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.
+/*---
+esid: sec-unary-operators-static-semantics-early-errors
+es6id: 12.5.1
+description: Applied to a "covered" YieldExpression
+info: |
+  UnaryExpression :
+    ++ UnaryExpression
+    -- UnaryExpression
+
+  - It is an early Reference Error if IsValidSimpleAssignmentTarget of
+    UnaryExpression is false.
+
+  12.15.3 Static Semantics: IsValidSimpleAssignmentTarget
+
+  AssignmentExpression:
+    YieldExpression
+    ArrowFunction
+    LeftHandSideExpression = AssignmentExpression
+    LeftHandSideExpression AssignmentOperator AssignmentExpression
+
+  1. Return false.
+features: [generators]
+negative: ReferenceError
+---*/
+
+function* g() {
+  ++(yield);
+}
diff --git a/test/language/expressions/prefix-increment/target-newtarget.js b/test/language/expressions/prefix-increment/target-newtarget.js
new file mode 100644
index 0000000000000000000000000000000000000000..928f32b8c9f0ec34b585495399f1abfcc29a4a5a
--- /dev/null
+++ b/test/language/expressions/prefix-increment/target-newtarget.js
@@ -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.
+/*---
+esid: sec-unary-operators-static-semantics-early-errors
+es6id: 12.5.1
+description: Applied to new.target
+info: |
+  UnaryExpression :
+    ++ UnaryExpression
+    -- UnaryExpression
+
+  - It is an early Reference Error if IsValidSimpleAssignmentTarget of
+    UnaryExpression is false.
+
+  12.3.1.5 Static Semantics: IsValidSimpleAssignmentTarget
+
+  NewTarget:
+
+  new.target
+
+  1. Return false.
+negative: ReferenceError
+---*/
+
+function f() {
+  ++new.target;
+}
diff --git a/test/language/expressions/yield/invalid-left-hand-side.js b/test/language/expressions/yield/invalid-left-hand-side.js
new file mode 100644
index 0000000000000000000000000000000000000000..e5d000a9146c91205a610194ac4ef2a4f529c98e
--- /dev/null
+++ b/test/language/expressions/yield/invalid-left-hand-side.js
@@ -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.
+/*---
+esid: sec-generator-function-definitions
+es6id: 14.4
+description: A YieldExpression is not a valid LeftHandSideExpression
+info: |
+  AssignmentExpression[In, Yield] :
+    ConditionalExpression[?In, ?Yield]
+    [+Yield]YieldExpression[?In]
+    ArrowFunction[?In, ?Yield]
+    LeftHandSideExpression[?Yield] = AssignmentExpression[?In, ?Yield]
+    LeftHandSideExpression[?Yield] AssignmentOperator AssignmentExpression[?In, ?Yield]
+
+  LeftHandSideExpression[Yield] :
+    NewExpression[?Yield]
+    CallExpression[?Yield]
+features: [generators]
+negative: SyntaxError
+---*/
+
+function* g() {
+  yield = 1;
+}