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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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62 | 62 |
63 function TestByteLengthNotWritable() { | 63 function TestByteLengthNotWritable() { |
64 var ab = new ArrayBuffer(1024); | 64 var ab = new ArrayBuffer(1024); |
65 assertSame(1024, ab.byteLength); | 65 assertSame(1024, ab.byteLength); |
66 | 66 |
67 assertThrows(function() { "use strict"; ab.byteLength = 42; }, TypeError); | 67 assertThrows(function() { "use strict"; ab.byteLength = 42; }, TypeError); |
68 } | 68 } |
69 | 69 |
70 TestByteLengthNotWritable(); | 70 TestByteLengthNotWritable(); |
71 | 71 |
72 function TestSlice(expectedResultLen, initialLen, start, end) { | 72 function TestArrayBufferSlice() { |
73 var ab = new ArrayBuffer(initialLen); | 73 function TestSlice(expectedResultLen, initialLen, start, end) { |
74 var a1 = new Uint8Array(ab); | 74 var ab = new ArrayBuffer(initialLen); |
75 for (var i = 0; i < a1.length; i++) { | 75 var a1 = new Uint8Array(ab); |
76 a1[i] = 0xCA; | 76 for (var i = 0; i < a1.length; i++) { |
| 77 a1[i] = 0xCA; |
| 78 } |
| 79 var slice = ab.slice(start, end); |
| 80 assertSame(expectedResultLen, slice.byteLength); |
| 81 var a2 = new Uint8Array(slice); |
| 82 for (var i = 0; i < a2.length; i++) { |
| 83 assertSame(0xCA, a2[i]); |
| 84 } |
77 } | 85 } |
78 var slice = ab.slice(start, end); | |
79 assertSame(expectedResultLen, slice.byteLength); | |
80 var a2 = new Uint8Array(slice); | |
81 for (var i = 0; i < a2.length; i++) { | |
82 assertSame(0xCA, a2[i]); | |
83 } | |
84 } | |
85 | 86 |
86 function TestArrayBufferSlice() { | |
87 var ab = new ArrayBuffer(1024); | 87 var ab = new ArrayBuffer(1024); |
88 var ab1 = ab.slice(512, 1024); | 88 var ab1 = ab.slice(512, 1024); |
89 assertSame(512, ab1.byteLength); | 89 assertSame(512, ab1.byteLength); |
90 | 90 |
91 TestSlice(512, 1024, 512, 1024); | 91 TestSlice(512, 1024, 512, 1024); |
92 TestSlice(512, 1024, 512); | 92 TestSlice(512, 1024, 512); |
93 | 93 |
94 TestSlice(0, 0, 1, 20); | 94 TestSlice(0, 0, 1, 20); |
95 TestSlice(100, 100, 0, 100); | 95 TestSlice(100, 100, 0, 100); |
96 TestSlice(100, 100, 0, 1000); | 96 TestSlice(100, 100, 0, 1000); |
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112 TestSlice(10, 100, 0.96, 10.01); | 112 TestSlice(10, 100, 0.96, 10.01); |
113 TestSlice(10, 100, 0.01, 10.01); | 113 TestSlice(10, 100, 0.01, 10.01); |
114 TestSlice(10, 100, 0.01, 10.96); | 114 TestSlice(10, 100, 0.01, 10.96); |
115 | 115 |
116 TestSlice(10, 100, 90); | 116 TestSlice(10, 100, 90); |
117 TestSlice(10, 100, -10); | 117 TestSlice(10, 100, -10); |
118 } | 118 } |
119 | 119 |
120 TestArrayBufferSlice(); | 120 TestArrayBufferSlice(); |
121 | 121 |
| 122 function TestTypedArraySlice() { |
| 123 function TestSlice(expectedResultLen, initialLen, start, end) { |
| 124 var a1 = new Uint32Array(initialLen); |
| 125 for (var i = 0; i < a1.length; i++) { |
| 126 a1[i] = 0x12345678; |
| 127 } |
| 128 var slice = a1.slice(start, end); |
| 129 assertSame(expectedResultLen, slice.length); |
| 130 var a2 = new Uint32Array(slice); |
| 131 for (var i = 0; i < a2.length; i++) { |
| 132 assertSame(0x12345678, a2[i]); |
| 133 } |
| 134 } |
| 135 |
| 136 var ab = new Uint32Array(1024); |
| 137 var ab1 = ab.slice(512, 1024); |
| 138 assertSame(512, ab1.length); |
| 139 |
| 140 TestSlice(512, 1024, 512, 1024); |
| 141 TestSlice(512, 1024, 512); |
| 142 |
| 143 TestSlice(0, 0, 1, 20); |
| 144 TestSlice(100, 100, 0, 100); |
| 145 TestSlice(100, 100, 0, 1000); |
| 146 |
| 147 TestSlice(0, 100, 5, 1); |
| 148 |
| 149 TestSlice(1, 100, -11, -10); |
| 150 TestSlice(9, 100, -10, 99); |
| 151 TestSlice(0, 100, -10, 80); |
| 152 TestSlice(10, 100, 80, -10); |
| 153 |
| 154 TestSlice(10, 100, 90, "100"); |
| 155 TestSlice(10, 100, "90", "100"); |
| 156 |
| 157 TestSlice(0, 100, 90, "abc"); |
| 158 TestSlice(10, 100, "abc", 10); |
| 159 |
| 160 TestSlice(10, 100, 0.96, 10.96); |
| 161 TestSlice(10, 100, 0.96, 10.01); |
| 162 TestSlice(10, 100, 0.01, 10.01); |
| 163 TestSlice(10, 100, 0.01, 10.96); |
| 164 |
| 165 TestSlice(10, 100, 90); |
| 166 TestSlice(10, 100, -10); |
| 167 } |
| 168 |
| 169 TestTypedArraySlice(); |
| 170 |
122 // Typed arrays | 171 // Typed arrays |
123 | 172 |
124 function TestTypedArray(constr, elementSize, typicalElement) { | 173 function TestTypedArray(constr, elementSize, typicalElement) { |
125 assertSame(elementSize, constr.BYTES_PER_ELEMENT); | 174 assertSame(elementSize, constr.BYTES_PER_ELEMENT); |
126 | 175 |
127 var ab = new ArrayBuffer(256*elementSize); | 176 var ab = new ArrayBuffer(256*elementSize); |
128 | 177 |
129 var a0 = new constr(30); | 178 var a0 = new constr(30); |
130 assertEquals("[object " + constr.name + "]", | 179 assertEquals("[object " + constr.name + "]", |
131 Object.prototype.toString.call(a0)); | 180 Object.prototype.toString.call(a0)); |
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712 TestArbitrary(new ArrayBuffer(256)); | 761 TestArbitrary(new ArrayBuffer(256)); |
713 for(i = 0; i < typedArrayConstructors.length; i++) { | 762 for(i = 0; i < typedArrayConstructors.length; i++) { |
714 TestArbitrary(new typedArrayConstructors[i](10)); | 763 TestArbitrary(new typedArrayConstructors[i](10)); |
715 } | 764 } |
716 TestArbitrary(new DataView(new ArrayBuffer(256))); | 765 TestArbitrary(new DataView(new ArrayBuffer(256))); |
717 | 766 |
718 | 767 |
719 // Test direct constructor call | 768 // Test direct constructor call |
720 assertThrows(function() { ArrayBuffer(); }, TypeError); | 769 assertThrows(function() { ArrayBuffer(); }, TypeError); |
721 assertThrows(function() { DataView(new ArrayBuffer()); }, TypeError); | 770 assertThrows(function() { DataView(new ArrayBuffer()); }, TypeError); |
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