Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2015 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 | // Tests for standard TypedArray array iteration functions. |
| 6 | |
| 7 | var typedArrayConstructors = [ |
| 8 | Uint8Array, |
| 9 | Int8Array, |
| 10 | Uint16Array, |
| 11 | Int16Array, |
| 12 | Uint32Array, |
| 13 | Int32Array, |
| 14 | Uint8ClampedArray, |
| 15 | Float32Array, |
| 16 | Float64Array |
| 17 | ]; |
| 18 | |
| 19 | function assertArrayLikeEquals(expected, value, type) { |
| 20 | assertEquals(value.__proto__, type.prototype); |
| 21 | assertEquals(expected.length, value.length); |
| 22 | for (var i = 0; i < value.length; ++i) { |
| 23 | assertEquals(expected[i], value[i]); |
| 24 | } |
| 25 | } |
| 26 | |
| 27 | for (var constructor of typedArrayConstructors) { |
| 28 | (function TypedArrayFilterTest() { |
| 29 | // Simple use. |
| 30 | var a = new constructor([0, 1]); |
| 31 | assertArrayLikeEquals([0], a.filter(function(n) { return n == 0; }), |
| 32 | constructor); |
| 33 | assertArrayLikeEquals([0, 1], a, constructor); |
| 34 | |
| 35 | // Use specified object as this object when calling the function. |
| 36 | var o = { value: 42 } |
| 37 | a = new constructor([1, 42, 3, 42, 4]); |
| 38 | assertArrayLikeEquals([42, 42], a.filter(function(n) { |
| 39 | return this.value == n |
| 40 | }, o), constructor); |
| 41 | |
| 42 | // Modify original array. |
| 43 | a = new constructor([1, 42, 3, 42, 4]); |
| 44 | assertArrayLikeEquals([42, 42], a.filter(function(n, index, array) { |
| 45 | array[index] = 43; return 42 == n; |
| 46 | }), constructor); |
| 47 | assertArrayLikeEquals([43, 43, 43, 43, 43], a, constructor); |
| 48 | |
| 49 | // Create a new object in each function call when receiver is a |
| 50 | // primitive value. See ECMA-262, Annex C. |
| 51 | a = []; |
| 52 | new constructor([1, 2]).filter(function() { a.push(this) }, ''); |
| 53 | assertTrue(a[0] !== a[1]); |
| 54 | |
| 55 | // Do not create a new object otherwise. |
| 56 | a = []; |
| 57 | new constructor([1, 2]).filter(function() { a.push(this) }, {}); |
| 58 | assertEquals(a[0], a[1]); |
| 59 | |
| 60 | // In strict mode primitive values should not be coerced to an object. |
| 61 | a = []; |
| 62 | new constructor([1, 2]).filter(function() { |
| 63 | 'use strict'; |
| 64 | a.push(this); |
| 65 | }, ''); |
| 66 | assertEquals('', a[0]); |
| 67 | assertEquals(a[0], a[1]); |
| 68 | |
| 69 | // Calling this method on other types is a TypeError |
| 70 | assertThrows(function() { |
| 71 | constructor.prototype.filter.call([], function() {}); |
| 72 | }, TypeError); |
| 73 | |
| 74 | // Shadowing the length property doesn't change anything |
| 75 | a = new constructor([1, 2]); |
| 76 | Object.defineProperty(a, 'length', { value: 1 }); |
| 77 | assertArrayLikeEquals([2], a.filter(function(elt) { |
| 78 | return elt == 2; |
| 79 | }), constructor); |
| 80 | })(); |
| 81 | |
| 82 | (function TypedArrayMapTest() { |
| 83 | var a = new constructor([0, 1, 2, 3, 4]); |
| 84 | |
| 85 | // Simple use. |
| 86 | var result = [1, 2, 3, 4, 5]; |
| 87 | assertArrayLikeEquals(result, a.map(function(n) { return n + 1; }), |
| 88 | constructor); |
| 89 | assertEquals(a, a); |
| 90 | |
| 91 | // Use specified object as this object when calling the function. |
| 92 | var o = { delta: 42 } |
| 93 | result = [42, 43, 44, 45, 46]; |
| 94 | assertArrayLikeEquals(result, a.map(function(n) { |
| 95 | return this.delta + n; |
| 96 | }, o), constructor); |
| 97 | |
| 98 | // Modify original array. |
| 99 | a = new constructor([0, 1, 2, 3, 4]); |
| 100 | result = [1, 2, 3, 4, 5]; |
| 101 | assertArrayLikeEquals(result, a.map(function(n, index, array) { |
| 102 | array[index] = n + 1; |
| 103 | return n + 1; |
| 104 | }), constructor); |
| 105 | assertArrayLikeEquals(result, a, constructor); |
| 106 | |
| 107 | // Create a new object in each function call when receiver is a |
| 108 | // primitive value. See ECMA-262, Annex C. |
| 109 | a = []; |
| 110 | new constructor([1, 2]).map(function() { a.push(this) }, ''); |
| 111 | assertTrue(a[0] !== a[1]); |
| 112 | |
| 113 | // Do not create a new object otherwise. |
| 114 | a = []; |
| 115 | new constructor([1, 2]).map(function() { a.push(this) }, {}); |
| 116 | assertEquals(a[0], a[1]); |
| 117 | |
| 118 | // In strict mode primitive values should not be coerced to an object. |
| 119 | a = []; |
| 120 | new constructor([1, 2]).map(function() { 'use strict'; a.push(this); }, ''); |
| 121 | assertEquals('', a[0]); |
| 122 | assertEquals(a[0], a[1]); |
| 123 | |
| 124 | // Test that the result is converted to the right type |
| 125 | assertArrayLikeEquals([3, 3], new constructor([1, 2]).map(function() { |
| 126 | return "3"; |
| 127 | }), constructor); |
| 128 | if (constructor !== Float32Array && constructor !== Float64Array) { |
| 129 | assertArrayLikeEquals([0, 0], new constructor([1, 2]).map(function() { |
| 130 | return NaN; |
| 131 | }), constructor); |
| 132 | } |
| 133 | })(); |
| 134 | |
| 135 | // |
| 136 | // %TypedArray%.prototype.some |
| 137 | // |
| 138 | (function TypedArraySomeTest() { |
| 139 | var a = new constructor([0, 1, 2, 3, 4]); |
| 140 | |
| 141 | // Simple use. |
| 142 | assertTrue(a.some(function(n) { return n == 3})); |
| 143 | assertFalse(a.some(function(n) { return n == 5})); |
| 144 | |
| 145 | // Use specified object as this object when calling the function. |
| 146 | var o = { element: 42 }; |
| 147 | a = new constructor([1, 42, 3]); |
| 148 | assertTrue(a.some(function(n) { return this.element == n; }, o)); |
| 149 | a = new constructor([1]); |
| 150 | assertFalse(a.some(function(n) { return this.element == n; }, o)); |
| 151 | |
| 152 | // Modify original array. |
| 153 | a = new constructor([0, 1, 2, 3]); |
| 154 | assertTrue(a.some(function(n, index, array) { |
| 155 | array[index] = n + 1; |
| 156 | return n == 2; |
| 157 | })); |
| 158 | assertArrayLikeEquals([1, 2, 3, 3], a, constructor); |
| 159 | |
| 160 | // Create a new object in each function call when receiver is a |
| 161 | // primitive value. See ECMA-262, Annex C. |
| 162 | a = []; |
| 163 | new constructor([1, 2]).some(function() { a.push(this) }, ''); |
| 164 | assertTrue(a[0] !== a[1]); |
| 165 | |
| 166 | // Do not create a new object otherwise. |
| 167 | a = []; |
| 168 | new constructor([1, 2]).some(function() { a.push(this) }, {}); |
| 169 | assertEquals(a[0], a[1]); |
| 170 | |
| 171 | // In strict mode primitive values should not be coerced to an object. |
| 172 | a = []; |
| 173 | new constructor([1, 2]).some(function() { |
| 174 | 'use strict'; |
| 175 | a.push(this); |
| 176 | }, ''); |
| 177 | assertEquals('', a[0]); |
| 178 | assertEquals(a[0], a[1]); |
| 179 | |
| 180 | // Calling this method on other types is a TypeError |
| 181 | assertThrows(function() { |
| 182 | constructor.prototype.some.call([], function() {}); |
| 183 | }, TypeError); |
| 184 | |
| 185 | // Shadowing the length property doesn't change anything |
| 186 | a = new constructor([1, 2]); |
| 187 | Object.defineProperty(a, 'length', { value: 1 }); |
| 188 | assertEquals(true, a.some(function(elt) { return elt == 2; })); |
| 189 | assertEquals(false, Array.prototype.some.call(a, function(elt) { |
| 190 | return elt == 2; |
| 191 | })); |
| 192 | })(); |
| 193 | |
| 194 | } |