From 6565c89de2646fb624c98b71fda94a34ea9a4cea Mon Sep 17 00:00:00 2001
From: Mike Pennisi <mike@mikepennisi.com>
Date: Mon, 16 Feb 2015 15:30:49 -0500
Subject: [PATCH] Import tests from Google V8
These tests are derived from the following files within the Google V8
project:
test/mjsunit/es6/array-iterator.js
---
.../Symbol.iterator/property-descriptor.js | 14 +++++++
.../Symbol.toStringTag/property-descriptor.js | 18 +++++++++
.../Symbol.toStringTag/value-direct.js | 12 ++++++
.../value-from-to-string.js | 13 +++++++
.../prototype/next/iteration-mutable.js | 32 ++++++++++++++++
.../prototype/next/iteration.js | 29 ++++++++++++++
.../prototype/next/non-own-slots.js | 17 +++++++++
.../prototype/next/property-descriptor.js | 16 ++++++++
.../prototype/entries/iteration-mutable.js | 33 ++++++++++++++++
.../Array/prototype/entries/iteration.js | 38 +++++++++++++++++++
.../prototype/entries/property-descriptor.js | 14 +++++++
.../prototype/entries/returns-iterator.js | 13 +++++++
.../Array/prototype/keys/iteration-mutable.js | 32 ++++++++++++++++
.../Array/prototype/keys/iteration.js | 29 ++++++++++++++
.../prototype/keys/property-descriptor.js | 14 +++++++
.../Array/prototype/keys/returns-iterator.js | 13 +++++++
.../for-of/Array.prototype.Symbol.iterator.js | 19 ++++++++++
.../for-of/Array.prototype.entries.js | 27 +++++++++++++
test/language/for-of/Array.prototype.keys.js | 19 ++++++++++
test/language/for-of/array.js | 18 +++++++++
20 files changed, 420 insertions(+)
create mode 100644 test/built-ins/Array/prototype/Symbol.iterator/property-descriptor.js
create mode 100644 test/built-ins/Array/prototype/Symbol.iterator/prototype/Symbol.toStringTag/property-descriptor.js
create mode 100644 test/built-ins/Array/prototype/Symbol.iterator/prototype/Symbol.toStringTag/value-direct.js
create mode 100644 test/built-ins/Array/prototype/Symbol.iterator/prototype/Symbol.toStringTag/value-from-to-string.js
create mode 100644 test/built-ins/Array/prototype/Symbol.iterator/prototype/next/iteration-mutable.js
create mode 100644 test/built-ins/Array/prototype/Symbol.iterator/prototype/next/iteration.js
create mode 100644 test/built-ins/Array/prototype/Symbol.iterator/prototype/next/non-own-slots.js
create mode 100644 test/built-ins/Array/prototype/Symbol.iterator/prototype/next/property-descriptor.js
create mode 100644 test/built-ins/Array/prototype/entries/iteration-mutable.js
create mode 100644 test/built-ins/Array/prototype/entries/iteration.js
create mode 100644 test/built-ins/Array/prototype/entries/property-descriptor.js
create mode 100644 test/built-ins/Array/prototype/entries/returns-iterator.js
create mode 100644 test/built-ins/Array/prototype/keys/iteration-mutable.js
create mode 100644 test/built-ins/Array/prototype/keys/iteration.js
create mode 100644 test/built-ins/Array/prototype/keys/property-descriptor.js
create mode 100644 test/built-ins/Array/prototype/keys/returns-iterator.js
create mode 100644 test/language/for-of/Array.prototype.Symbol.iterator.js
create mode 100644 test/language/for-of/Array.prototype.entries.js
create mode 100644 test/language/for-of/Array.prototype.keys.js
create mode 100644 test/language/for-of/array.js
diff --git a/test/built-ins/Array/prototype/Symbol.iterator/property-descriptor.js b/test/built-ins/Array/prototype/Symbol.iterator/property-descriptor.js
new file mode 100644
index 0000000000..f309b02ac4
--- /dev/null
+++ b/test/built-ins/Array/prototype/Symbol.iterator/property-descriptor.js
@@ -0,0 +1,14 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ The method should exist on the Array prototype, and it should be writable
+ and configurable, but not enumerable.
+ includes: [propertyHelper.js]
+ es6id: 22.1.3.4
+ ---*/
+
+verifyNotEnumerable(Array.prototype, Symbol.iterator);
+verifyWritable(Array.prototype, Symbol.iterator);
+verifyConfigurable(Array.prototype, Symbol.iterator);
diff --git a/test/built-ins/Array/prototype/Symbol.iterator/prototype/Symbol.toStringTag/property-descriptor.js b/test/built-ins/Array/prototype/Symbol.iterator/prototype/Symbol.toStringTag/property-descriptor.js
new file mode 100644
index 0000000000..a146fe49de
--- /dev/null
+++ b/test/built-ins/Array/prototype/Symbol.iterator/prototype/Symbol.toStringTag/property-descriptor.js
@@ -0,0 +1,18 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ `Object.prototype.getOwnPropertyDescriptor` should reflect the value and
+ writability of the @@toStringTag attribute.
+ includes: [propertyHelper.js]
+ es6id: 22.1.5.2.2
+ ---*/
+
+var ArrayIteratorProto = Object.getPrototypeOf([][Symbol.iterator]());
+
+assert.sameValue("Array Iterator", ArrayIteratorProto[Symbol.toStringTag]);
+
+verifyNotEnumerable(ArrayIteratorProto, Symbol.toStringTag);
+verifyNotWritable(ArrayIteratorProto, Symbol.toStringTag);
+verifyConfigurable(ArrayIteratorProto, Symbol.toStringTag);
diff --git a/test/built-ins/Array/prototype/Symbol.iterator/prototype/Symbol.toStringTag/value-direct.js b/test/built-ins/Array/prototype/Symbol.iterator/prototype/Symbol.toStringTag/value-direct.js
new file mode 100644
index 0000000000..649b15bf24
--- /dev/null
+++ b/test/built-ins/Array/prototype/Symbol.iterator/prototype/Symbol.toStringTag/value-direct.js
@@ -0,0 +1,12 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ The @@toStringTag attribute should be defined directly on the prototype.
+ es6id: 22.1.5.2.2
+ ---*/
+
+var ArrayIteratorProto = Object.getPrototypeOf([][Symbol.iterator]());
+
+assert.sameValue("Array Iterator", ArrayIteratorProto[Symbol.toStringTag]);
diff --git a/test/built-ins/Array/prototype/Symbol.iterator/prototype/Symbol.toStringTag/value-from-to-string.js b/test/built-ins/Array/prototype/Symbol.iterator/prototype/Symbol.toStringTag/value-from-to-string.js
new file mode 100644
index 0000000000..1f0a63c411
--- /dev/null
+++ b/test/built-ins/Array/prototype/Symbol.iterator/prototype/Symbol.toStringTag/value-from-to-string.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ `Object.prototype.toString` should honor the value of the @@toStringTag
+ attribute.
+ es6id: 22.1.5.2.2
+ ---*/
+
+var iter = [][Symbol.iterator]();
+
+assert.sameValue("[object Array Iterator]", Object.prototype.toString.call(iter));
diff --git a/test/built-ins/Array/prototype/Symbol.iterator/prototype/next/iteration-mutable.js b/test/built-ins/Array/prototype/Symbol.iterator/prototype/next/iteration-mutable.js
new file mode 100644
index 0000000000..51db927d80
--- /dev/null
+++ b/test/built-ins/Array/prototype/Symbol.iterator/prototype/next/iteration-mutable.js
@@ -0,0 +1,32 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ When an item is added to the array after the iterator is created but
+ before the iterator is "done" (as defined by 22.1.5.2.1), the new item
+ should be accessible via iteration. When an item is added to the array
+ after the iterator is is "done", the new item should not be accessible
+ via iteration.
+ es6id: 22.1.3.30
+ ---*/
+
+var array = [];
+var iterator = array[Symbol.iterator]();
+var result;
+
+array.push('a');
+
+result = iterator.next();
+assert.sameValue(result.done, false, 'First result `done` flag');
+assert.sameValue(result.value, 'a', 'First result `value`');
+
+result = iterator.next();
+assert.sameValue(result.done, true, 'Exhausted result `done` flag');
+assert.sameValue(result.value, undefined, 'Exhausted result `value`');
+
+array.push('b');
+
+result = iterator.next();
+assert.sameValue(result.done, true, 'Exhausted result `done` flag (after push)');
+assert.sameValue(result.value, undefined, 'Exhausted result `value (after push)');
diff --git a/test/built-ins/Array/prototype/Symbol.iterator/prototype/next/iteration.js b/test/built-ins/Array/prototype/Symbol.iterator/prototype/next/iteration.js
new file mode 100644
index 0000000000..b31f19ca01
--- /dev/null
+++ b/test/built-ins/Array/prototype/Symbol.iterator/prototype/next/iteration.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ The method should return a valid iterator with the context as the
+ IteratedObject.
+ es6id: 22.1.3.30
+ ---*/
+
+var array = ['a', 'b', 'c'];
+var iterator = array[Symbol.iterator]();
+var result;
+
+result = iterator.next();
+assert.sameValue(result.value, 'a', 'First result `value`');
+assert.sameValue(result.done, false, 'First result `done` flag');
+
+result = iterator.next();
+assert.sameValue(result.value, 'b', 'Second result `value`');
+assert.sameValue(result.done, false, 'Second result `done` flag');
+
+result = iterator.next();
+assert.sameValue(result.value, 'c', 'Third result `value`');
+assert.sameValue(result.done, false, 'Third result `done` flag`');
+
+result = iterator.next();
+assert.sameValue(result.value, undefined, 'Exhausted result `value`');
+assert.sameValue(result.done, true, 'Exhausted result `done` flag');
diff --git a/test/built-ins/Array/prototype/Symbol.iterator/prototype/next/non-own-slots.js b/test/built-ins/Array/prototype/Symbol.iterator/prototype/next/non-own-slots.js
new file mode 100644
index 0000000000..822dfe908a
--- /dev/null
+++ b/test/built-ins/Array/prototype/Symbol.iterator/prototype/next/non-own-slots.js
@@ -0,0 +1,17 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ If the `this` value does not have all of the internal slots of an Array
+ Iterator Instance (22.1.5.3), throw a TypeError exception.
+ es6id: 22.1.5.2.1
+ ---*/
+
+var array = [0];
+var iterator = array[Symbol.iterator]();
+var object = Object.create(iterator);
+
+assert.throws(TypeError, function() {
+ object.next();
+});
diff --git a/test/built-ins/Array/prototype/Symbol.iterator/prototype/next/property-descriptor.js b/test/built-ins/Array/prototype/Symbol.iterator/prototype/next/property-descriptor.js
new file mode 100644
index 0000000000..f04d40fce1
--- /dev/null
+++ b/test/built-ins/Array/prototype/Symbol.iterator/prototype/next/property-descriptor.js
@@ -0,0 +1,16 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ The method should exist on the ArrayIterator prototype, and it should be
+ writable and configurable, but not enumerable.
+ includes: [propertyHelper.js]
+ es6id: 17
+ ---*/
+
+var ArrayIteratorProto = Object.getPrototypeOf([][Symbol.iterator]());
+
+verifyNotEnumerable(ArrayIteratorProto, 'next');
+verifyWritable(ArrayIteratorProto, 'next');
+verifyConfigurable(ArrayIteratorProto, 'next');
diff --git a/test/built-ins/Array/prototype/entries/iteration-mutable.js b/test/built-ins/Array/prototype/entries/iteration-mutable.js
new file mode 100644
index 0000000000..e5df017cf4
--- /dev/null
+++ b/test/built-ins/Array/prototype/entries/iteration-mutable.js
@@ -0,0 +1,33 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ The method should return a valid iterator with the context as the
+ IteratedObject. When an item is added to the array after the iterator is
+ created but before the iterator is "done" (as defined by 22.1.5.2.1) the
+ new item should be accessible via iteration.
+ es6id: 22.1.3.4
+ ---*/
+
+var array = [];
+var iterator = array.entries();
+var result;
+
+array.push('a');
+
+result = iterator.next();
+assert.sameValue(result.done, false, 'First result `done` flag');
+assert.sameValue(result.value[0], 0, 'First result `value` (array key)');
+assert.sameValue(result.value[1], 'a', 'First result `value (array value)');
+assert.sameValue(result.value.length, 2, 'First result `value` (length)');
+
+result = iterator.next();
+assert.sameValue(result.done, true, 'Exhausted result `done` flag');
+assert.sameValue(result.value, undefined, 'Exhausted result `value`');
+
+array.push('b');
+
+result = iterator.next();
+assert.sameValue(result.done, true, 'Exhausted result `done` flag (after push)');
+assert.sameValue(result.value, undefined, 'Exhausted result `value` (after push)');
diff --git a/test/built-ins/Array/prototype/entries/iteration.js b/test/built-ins/Array/prototype/entries/iteration.js
new file mode 100644
index 0000000000..f15a26e78b
--- /dev/null
+++ b/test/built-ins/Array/prototype/entries/iteration.js
@@ -0,0 +1,38 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ The method should return a valid iterator with the context as the
+ IteratedObject.
+ es6id: 22.1.3.4
+ ---*/
+
+var ArrayIteratorPrototype = Object.getPrototypeOf(Array.prototype[Symbol.iterator]());
+var array = ['a', 'b', 'c'];
+var iterator = array.entries();
+var result;
+
+assert.sameValue(ArrayIteratorPrototype, Object.getPrototypeOf(array.entries()));
+
+result = iterator.next();
+assert.sameValue(result.done, false, 'First result `done` flag');
+assert.sameValue(result.value[0], 0, 'First result `value` (array key)');
+assert.sameValue(result.value[1], 'a', 'First result `value` (array value)');
+assert.sameValue(result.value.length, 2, 'First result `value` (length)');
+
+result = iterator.next();
+assert.sameValue(result.done, false, 'Second result `done` flag');
+assert.sameValue(result.value[0], 1, 'Second result `value` (array key)');
+assert.sameValue(result.value[1], 'b', 'Second result `value` (array value)');
+assert.sameValue(result.value.length, 2, 'Second result `value` (length)');
+
+result = iterator.next();
+assert.sameValue(result.done, false, 'Third result `done` flag');
+assert.sameValue(result.value[0], 2, 'Third result `value` (array key)');
+assert.sameValue(result.value[1], 'c', 'Third result `value` (array value)');
+assert.sameValue(result.value.length, 2, 'Third result `value` (length)');
+
+result = iterator.next();
+assert.sameValue(result.done, true, 'Exhausted result `done` flag');
+assert.sameValue(result.value, undefined, 'Exhausted result `value`');
diff --git a/test/built-ins/Array/prototype/entries/property-descriptor.js b/test/built-ins/Array/prototype/entries/property-descriptor.js
new file mode 100644
index 0000000000..888ab3173e
--- /dev/null
+++ b/test/built-ins/Array/prototype/entries/property-descriptor.js
@@ -0,0 +1,14 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ The method should exist on the Array prototype, and it should be writable
+ and configurable, but not enumerable.
+ includes: [propertyHelper.js]
+ es6id: 17
+ ---*/
+
+verifyNotEnumerable(Array.prototype, 'entries');
+verifyWritable(Array.prototype, 'entries');
+verifyConfigurable(Array.prototype, 'entries');
diff --git a/test/built-ins/Array/prototype/entries/returns-iterator.js b/test/built-ins/Array/prototype/entries/returns-iterator.js
new file mode 100644
index 0000000000..22b8aa9c53
--- /dev/null
+++ b/test/built-ins/Array/prototype/entries/returns-iterator.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ The method should return an Iterator instance.
+ es6id: 22.1.3.4
+ ---*/
+
+var ArrayIteratorProto = Object.getPrototypeOf([][Symbol.iterator]());
+var iter = [].entries();
+
+assert.sameValue(Object.getPrototypeOf(iter), ArrayIteratorProto);
diff --git a/test/built-ins/Array/prototype/keys/iteration-mutable.js b/test/built-ins/Array/prototype/keys/iteration-mutable.js
new file mode 100644
index 0000000000..cdf84c8683
--- /dev/null
+++ b/test/built-ins/Array/prototype/keys/iteration-mutable.js
@@ -0,0 +1,32 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ When an item is added to the array after the iterator is created but
+ before the iterator is "done" (as defined by 22.1.5.2.1), the new item's
+ key should be accessible via iteration. When an item is added to the
+ array after the iterator is is "done", the new item's key should not be
+ accessible via iteration.
+ es6id: 22.1.3.13
+ ---*/
+
+var array = [];
+var iterator = array.keys();
+var result;
+
+array.push('a');
+
+result = iterator.next();
+assert.sameValue(result.done, false , 'First result `done` flag');
+assert.sameValue(result.value, 0, 'First result `value`');
+
+result = iterator.next();
+assert.sameValue(result.done, true, 'Exhausted result `done` flag');
+assert.sameValue(result.value, undefined, 'Exhausted result `value`');
+
+array.push('b');
+
+result = iterator.next();
+assert.sameValue(result.done, true, 'Exhausted result `done` flag (after push)');
+assert.sameValue(result.value, undefined, 'Exhausted result `value` (after push)');
diff --git a/test/built-ins/Array/prototype/keys/iteration.js b/test/built-ins/Array/prototype/keys/iteration.js
new file mode 100644
index 0000000000..7e964bbe55
--- /dev/null
+++ b/test/built-ins/Array/prototype/keys/iteration.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ The method should return a valid iterator with the array's numeric
+ properties as the IteratedObject.
+ es6id: 22.1.3.13
+ ---*/
+
+var array = ['a', 'b', 'c'];
+var iterator = array.keys();
+var result;
+
+result = iterator.next();
+assert.sameValue(result.value, 0, 'First result `value`');
+assert.sameValue(result.done, false, 'First result `done` flag');
+
+result = iterator.next();
+assert.sameValue(result.value, 1, 'Second result `value`');
+assert.sameValue(result.done, false, 'Second result `done` flag');
+
+result = iterator.next();
+assert.sameValue(result.value, 2, 'Third result `value`');
+assert.sameValue(result.done, false, 'Third result `done` flag');
+
+result = iterator.next();
+assert.sameValue(result.value, undefined, 'Exhausted result `value`');
+assert.sameValue(result.done, true, 'Exhausted result `done` flag');
diff --git a/test/built-ins/Array/prototype/keys/property-descriptor.js b/test/built-ins/Array/prototype/keys/property-descriptor.js
new file mode 100644
index 0000000000..b9d5af2b82
--- /dev/null
+++ b/test/built-ins/Array/prototype/keys/property-descriptor.js
@@ -0,0 +1,14 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ The method should exist on the Array prototype, and it should be writable
+ and configurable, but not enumerable.
+ includes: [propertyHelper.js]
+ es6id: 22.1.3.13
+ ---*/
+
+verifyNotEnumerable(Array.prototype, 'keys');
+verifyWritable(Array.prototype, 'keys');
+verifyConfigurable(Array.prototype, 'keys');
diff --git a/test/built-ins/Array/prototype/keys/returns-iterator.js b/test/built-ins/Array/prototype/keys/returns-iterator.js
new file mode 100644
index 0000000000..b5a8adee78
--- /dev/null
+++ b/test/built-ins/Array/prototype/keys/returns-iterator.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ The method should return an Iterator instance.
+ es6id: 22.1.3.13
+ ---*/
+
+var ArrayIteratorProto = Object.getPrototypeOf([][Symbol.iterator]());
+var iter = [].keys();
+
+assert.sameValue(Object.getPrototypeOf(iter), ArrayIteratorProto);
diff --git a/test/language/for-of/Array.prototype.Symbol.iterator.js b/test/language/for-of/Array.prototype.Symbol.iterator.js
new file mode 100644
index 0000000000..9667acac6c
--- /dev/null
+++ b/test/language/for-of/Array.prototype.Symbol.iterator.js
@@ -0,0 +1,19 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ The method should return a valid iterator that can be traversed using a
+ `for...of` loop.
+ es6id: 22.1.3.30
+ ---*/
+
+var array = [0, 'a', true, false, null, /* hole */, undefined, NaN];
+var i = 0;
+
+for (var value of array[Symbol.iterator]()) {
+ assert.sameValue(value, array[i], 'element at index ' + i);
+ i++;
+}
+
+assert.sameValue(i, 8, 'Visits all elements');
diff --git a/test/language/for-of/Array.prototype.entries.js b/test/language/for-of/Array.prototype.entries.js
new file mode 100644
index 0000000000..487d19ed0c
--- /dev/null
+++ b/test/language/for-of/Array.prototype.entries.js
@@ -0,0 +1,27 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ The method should return a valid iterator that can be traversed using a
+ `for...of` loop.
+ es6id: 22.1.3.4
+ ---*/
+
+var array = [0, 'a', true, false, null, /* hole */, undefined, NaN];
+var i = 0;
+
+for (var value of array.entries()) {
+ assert.sameValue(
+ value[0], i, 'element at index ' + i + ': value (array key)'
+ );
+ assert.sameValue(
+ value[1], array[i], 'element at index ' + i + ': value (array value)'
+ );
+ assert.sameValue(
+ value.length, 2, 'element at index ' + i + ': value (array length)'
+ );
+ i++;
+}
+
+assert.sameValue(i, 8, 'Visits all elements');
diff --git a/test/language/for-of/Array.prototype.keys.js b/test/language/for-of/Array.prototype.keys.js
new file mode 100644
index 0000000000..ea05bbf67f
--- /dev/null
+++ b/test/language/for-of/Array.prototype.keys.js
@@ -0,0 +1,19 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ The method should return a valid iterator that can be traversed using a
+ `for...of` loop.
+ es6id: 22.1.3.13
+ ---*/
+
+var array = [0, 'a', true, false, null, /* hole */, undefined, NaN];
+var i = 0;
+
+for (var value of array.keys()) {
+ assert.sameValue(value, i, 'element at index ' + i);
+ i++;
+}
+
+assert.sameValue(i, 8, 'Visits all elements');
diff --git a/test/language/for-of/array.js b/test/language/for-of/array.js
new file mode 100644
index 0000000000..628d70e2db
--- /dev/null
+++ b/test/language/for-of/array.js
@@ -0,0 +1,18 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+ description: >
+ Array instances should be able to be traversed using a `for...of` loop.
+ es6id: 13.6.4
+ ---*/
+
+var array = [0, 'a', true, false, null, /* hole */, undefined, NaN];
+var i = 0;
+
+for (var value of array) {
+ assert.sameValue(value, array[i], 'element at index ' + i);
+ i++;
+}
+
+assert.sameValue(i, 8, 'Visits all elements');
--
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