js/src/jit-test/tests/basic/testArrayBufferSlice.js@6474c204b198 (annotated)
js/src/jit-test/tests/basic/testArrayBufferSlice.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | function testSlice() { |
| michael@0 | 2 | function test(subBuf, starts, size) { |
| michael@0 | 3 | var byteLength = size; |
| michael@0 | 4 | var subBuffer = eval(subBuf); |
| michael@0 | 5 | var subArray = new Int8Array(subBuffer); |
| michael@0 | 6 | assertEq(subBuffer.byteLength, byteLength); |
| michael@0 | 7 | for (var i = 0; i < size; ++i) |
| michael@0 | 8 | assertEq(starts + i, subArray[i]); |
| michael@0 | 9 | } |
| michael@0 | 10 | |
| michael@0 | 11 | var buffer = new ArrayBuffer(32); |
| michael@0 | 12 | var array = new Int8Array(buffer); |
| michael@0 | 13 | for (var i = 0; i < 32; ++i) |
| michael@0 | 14 | array[i] = i; |
| michael@0 | 15 | |
| michael@0 | 16 | test("buffer.slice(0)", 0, 32); |
| michael@0 | 17 | test("buffer.slice(16)", 16, 16); |
| michael@0 | 18 | test("buffer.slice(24)", 24, 8); |
| michael@0 | 19 | test("buffer.slice(32)", 32, 0); |
| michael@0 | 20 | test("buffer.slice(40)", 32, 0); |
| michael@0 | 21 | test("buffer.slice(80)", 32, 0); |
| michael@0 | 22 | |
| michael@0 | 23 | test("buffer.slice(-8)", 24, 8); |
| michael@0 | 24 | test("buffer.slice(-16)", 16, 16); |
| michael@0 | 25 | test("buffer.slice(-24)", 8, 24); |
| michael@0 | 26 | test("buffer.slice(-32)", 0, 32); |
| michael@0 | 27 | test("buffer.slice(-40)", 0, 32); |
| michael@0 | 28 | test("buffer.slice(-80)", 0, 32); |
| michael@0 | 29 | |
| michael@0 | 30 | test("buffer.slice(0, 32)", 0, 32); |
| michael@0 | 31 | test("buffer.slice(0, 16)", 0, 16); |
| michael@0 | 32 | test("buffer.slice(8, 24)", 8, 16); |
| michael@0 | 33 | test("buffer.slice(16, 32)", 16, 16); |
| michael@0 | 34 | test("buffer.slice(24, 16)", 24, 0); |
| michael@0 | 35 | |
| michael@0 | 36 | test("buffer.slice(16, -8)", 16, 8); |
| michael@0 | 37 | test("buffer.slice(-20, 30)", 12, 18); |
| michael@0 | 38 | |
| michael@0 | 39 | test("buffer.slice(-8, -20)", 24, 0); |
| michael@0 | 40 | test("buffer.slice(-20, -8)", 12, 12); |
| michael@0 | 41 | test("buffer.slice(-40, 16)", 0, 16); |
| michael@0 | 42 | test("buffer.slice(-40, 40)", 0, 32); |
| michael@0 | 43 | |
| michael@0 | 44 | gczeal(7, 100000); |
| michael@0 | 45 | var nurseryBuf = new ArrayBuffer(32); |
| michael@0 | 46 | var arr = new Int8Array(nurseryBuf); |
| michael@0 | 47 | arr[0] = 77; |
| michael@0 | 48 | |
| michael@0 | 49 | // tenure nurseryBuf during the slice operation |
| michael@0 | 50 | nurseryBuf.slice; // Creates an object |
| michael@0 | 51 | schedulegc(1); |
| michael@0 | 52 | var newbuf = nurseryBuf.slice(0); |
| michael@0 | 53 | var arr2 = new Int8Array(newbuf); |
| michael@0 | 54 | assertEq(arr2[0], 77); |
| michael@0 | 55 | } |
| michael@0 | 56 | |
| michael@0 | 57 | testSlice(); |
