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Side by Side Diff: test/mjsunit/harmony/typedarrays-every.js

Issue 1215863003: Include Harmony Array/TypedArray methods unconditionally (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: remove the flag and move the tests Created 5 years, 5 months ago
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1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Flags: --harmony-arrays --allow-natives-syntax
6
7 var typedArrayConstructors = [
8 Uint8Array,
9 Int8Array,
10 Uint16Array,
11 Int16Array,
12 Uint32Array,
13 Int32Array,
14 Uint8ClampedArray,
15 Float32Array,
16 Float64Array];
17
18 function CheckTypedArrayIsNeutered(array) {
19 assertEquals(0, array.byteLength);
20 assertEquals(0, array.byteOffset);
21 assertEquals(0, array.length);
22 }
23
24 function TestTypedArrayForEach(constructor) {
25 assertEquals(1, constructor.prototype.every.length);
26
27 var a = new constructor(3);
28 a[0] = 0;
29 a[1] = 1;
30 a[2] = 2;
31
32 var result = a.every(function (n) { return n < 2; });
33 assertFalse(result);
34
35 var result = a.every(function (n) { return n > 2; });
36 assertFalse(result);
37
38 var result = a.every(function (n) { return n >= 0; });
39 assertEquals(true, result);
40
41 // Use specified object as this object when calling the function.
42 var o = { value: 42 };
43 result = a.every(function (n, index, array) { return n == index && n < this.va lue; }, o);
44 assertEquals(true, result);
45
46 // Early exit happens when appropriate
47 count = 0;
48 result = a.every(function () { count++; return false; });
49 assertEquals(1, count);
50 assertFalse(result);
51
52 // Modify the original array.
53 count = 0;
54 result = a.every(function (n, index, array) {
55 array[index] = n + 1; count++; return true;
56 });
57 assertEquals(3, count);
58 assertEquals(true, result);
59 assertArrayEquals([1, 2, 3], a);
60
61 // Check that values passed as second argument are wrapped into
62 // objects when calling into sloppy mode functions.
63 function CheckWrapping(value, wrapper) {
64 var wrappedValue = new wrapper(value);
65
66 a.every(function () {
67 assertEquals("object", typeof this);
68 assertEquals(wrappedValue, this);
69 }, value);
70
71 a.every(function () {
72 "use strict";
73 assertEquals(typeof value, typeof this);
74 assertEquals(value, this);
75 }, value);
76 }
77 CheckWrapping(true, Boolean);
78 CheckWrapping(false, Boolean);
79 CheckWrapping("xxx", String);
80 CheckWrapping(42, Number);
81 CheckWrapping(3.14, Number);
82 CheckWrapping({}, Object);
83
84 // Neutering the buffer backing the typed array mid-way should
85 // still make .forEach() finish, and the array should keep being
86 // empty after neutering it.
87 count = 0;
88 a = new constructor(3);
89 result = a.every(function (n, index, array) {
90 assertFalse(array[index] === undefined); // don't get here if neutered
91 if (count > 0) %ArrayBufferNeuter(array.buffer);
92 array[index] = n + 1;
93 count++;
94 return count > 1 ? array[index] === undefined : true;
95 });
96 assertEquals(2, count);
97 assertEquals(true, result);
98 CheckTypedArrayIsNeutered(a);
99 assertEquals(undefined, a[0]);
100
101 // The method must work for typed arrays created from ArrayBuffer.
102 // The length of the ArrayBuffer is chosen so it is a multiple of
103 // all lengths of the typed array items.
104 a = new constructor(new ArrayBuffer(64));
105 count = 0;
106 result = a.every(function (n) { return n == 0; });
107 assertEquals(result, true);
108
109 // Externalizing the array mid-way accessing the .buffer property
110 // should work.
111 a = new constructor(2);
112 count = 0;
113 var buffer = undefined;
114 a.every(function (n, index, array) {
115 if (count++ > 0)
116 buffer = array.buffer;
117 return true;
118 });
119 assertEquals(2, count);
120 assertTrue(!!buffer);
121 assertEquals("ArrayBuffer", %_ClassOf(buffer));
122 assertSame(buffer, a.buffer);
123
124 // The %TypedArray%.every() method should not work when
125 // transplanted to objects that are not typed arrays.
126 assertThrows(function () { constructor.prototype.every.call([1, 2, 3], functio n (x) {}) }, TypeError);
127 assertThrows(function () { constructor.prototype.every.call("abc", function (x ) {}) }, TypeError);
128 assertThrows(function () { constructor.prototype.every.call({}, function (x) { }) }, TypeError);
129 assertThrows(function () { constructor.prototype.every.call(0, function (x) {} ) }, TypeError);
130
131 // Method must be useable on instances of other typed arrays.
132 for (var i = 0; i < typedArrayConstructors.length; i++) {
133 count = 0;
134 a = new typedArrayConstructors[i](4);
135 constructor.prototype.every.call(a, function (x) { count++; return true; });
136 assertEquals(a.length, count);
137 }
138
139 // Shadowing length doesn't affect every, unlike Array.prototype.every
140 a = new constructor([1, 2]);
141 Object.defineProperty(a, 'length', {value: 1});
142 var x = 0;
143 assertEquals(a.every(function(elt) { x += elt; return true; }), true);
144 assertEquals(x, 3);
145 assertEquals(Array.prototype.every.call(a,
146 function(elt) { x += elt; return true; }), true);
147 assertEquals(x, 4);
148 }
149
150 for (i = 0; i < typedArrayConstructors.length; i++) {
151 TestTypedArrayForEach(typedArrayConstructors[i]);
152 }
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