From d6a96506f5bb7752319738a0061d5022afc26475 Mon Sep 17 00:00:00 2001 From: Leonardo Balter Date: Thu, 16 Jul 2015 18:35:28 -0400 Subject: [PATCH] Add tests for Array.prototype.values --- .../prototype/values/iteration-mutable.js | 39 +++++++++++++++++++ .../Array/prototype/values/iteration.js | 33 ++++++++++++++++ .../values/returns-iterator-from-object.js | 25 ++++++++++++ .../prototype/values/returns-iterator.js | 30 ++++++++++++++ 4 files changed, 127 insertions(+) create mode 100644 test/built-ins/Array/prototype/values/iteration-mutable.js create mode 100644 test/built-ins/Array/prototype/values/iteration.js create mode 100644 test/built-ins/Array/prototype/values/returns-iterator-from-object.js create mode 100644 test/built-ins/Array/prototype/values/returns-iterator.js diff --git a/test/built-ins/Array/prototype/values/iteration-mutable.js b/test/built-ins/Array/prototype/values/iteration-mutable.js new file mode 100644 index 0000000000..ab69b540db --- /dev/null +++ b/test/built-ins/Array/prototype/values/iteration-mutable.js @@ -0,0 +1,39 @@ +// Copyright (C) 2015 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +es6id: 22.1.3.29 +description: > + New items in the array are accessible via iteration until iterator is "done". +info: > + 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 + value should be accessible via iteration. When an item is added to the + array after the iterator is "done", the new item should not be + accessible via iteration. +---*/ + +var array = []; +var iterator = array.values(); +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/values/iteration.js b/test/built-ins/Array/prototype/values/iteration.js new file mode 100644 index 0000000000..c67752ae07 --- /dev/null +++ b/test/built-ins/Array/prototype/values/iteration.js @@ -0,0 +1,33 @@ +// Copyright (C) 2015 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +es6id: 22.1.3.29 +description: > + The return is a valid iterator with the array's numeric properties. +info: > + 22.1.3.29 Array.prototype.values ( ) + + 1. Let O be ToObject(this value). + 2. ReturnIfAbrupt(O). + 3. Return CreateArrayIterator(O, "value"). +---*/ + +var array = ['a', 'b', 'c']; +var iterator = array.values(); +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/values/returns-iterator-from-object.js b/test/built-ins/Array/prototype/values/returns-iterator-from-object.js new file mode 100644 index 0000000000..1e1c813c49 --- /dev/null +++ b/test/built-ins/Array/prototype/values/returns-iterator-from-object.js @@ -0,0 +1,25 @@ +// Copyright (C) 2015 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +es6id: 22.1.3.29 +description: > + Creates an iterator from a custom object. +info: > + 22.1.3.29 Array.prototype.values ( ) + + 1. Let O be ToObject(this value). + 2. ReturnIfAbrupt(O). + 3. Return CreateArrayIterator(O, "value"). +features: [Symbol.iterator] +---*/ + +var obj = { + length: 2 +}; +var iter = Array.prototype.values.call(obj); +var ArrayIteratorProto = Object.getPrototypeOf([][Symbol.iterator]()); + +assert.sameValue( + Object.getPrototypeOf(iter), ArrayIteratorProto, + 'The prototype of [].values() is %ArrayIteratorPrototype%' +); diff --git a/test/built-ins/Array/prototype/values/returns-iterator.js b/test/built-ins/Array/prototype/values/returns-iterator.js new file mode 100644 index 0000000000..14cb8bf240 --- /dev/null +++ b/test/built-ins/Array/prototype/values/returns-iterator.js @@ -0,0 +1,30 @@ +// Copyright (C) 2015 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +es6id: 22.1.3.29 +description: > + The method should return an Iterator instance. +info: > + 22.1.3.29 Array.prototype.values ( ) + + 1. Let O be ToObject(this value). + 2. ReturnIfAbrupt(O). + 3. Return CreateArrayIterator(O, "value"). + + 22.1.5.1 CreateArrayIterator Abstract Operation + + ... + 2. Let iterator be ObjectCreate(%ArrayIteratorPrototype%, «‍[[IteratedObject]], + [[ArrayIteratorNextIndex]], [[ArrayIterationKind]]»). + ... + 6. Return iterator. +features: [Symbol.iterator] +---*/ + +var ArrayIteratorProto = Object.getPrototypeOf([][Symbol.iterator]()); +var iter = [].values(); + +assert.sameValue( + Object.getPrototypeOf(iter), ArrayIteratorProto, + 'The prototype of [].values() is %ArrayIteratorPrototype%' +);