diff options
Diffstat (limited to 'js/src/jit-test/tests/typedarray/construct-with-resizable-arraybuffer.js')
-rw-r--r-- | js/src/jit-test/tests/typedarray/construct-with-resizable-arraybuffer.js | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/typedarray/construct-with-resizable-arraybuffer.js b/js/src/jit-test/tests/typedarray/construct-with-resizable-arraybuffer.js new file mode 100644 index 0000000000..33f7a4f6c6 --- /dev/null +++ b/js/src/jit-test/tests/typedarray/construct-with-resizable-arraybuffer.js @@ -0,0 +1,102 @@ +// |jit-test| --enable-arraybuffer-resizable; skip-if: !ArrayBuffer.prototype.resize + +// Test TypedArray constructor when called with resizable ArrayBuffers. + +function testArrayBuffer() { + function test() { + var ab = new ArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: 5 * Int32Array.BYTES_PER_ELEMENT}); + for (var i = 0; i < 200; ++i) { + var ta = new Int32Array(ab); + assertEq(ta.length, 4); + + // Ensure auto-length tracking works correctly. + ab.resize(5 * Int32Array.BYTES_PER_ELEMENT); + assertEq(ta.length, 5); + + ab.resize(2 * Int32Array.BYTES_PER_ELEMENT); + assertEq(ta.length, 2); + + // Reset to original length. + ab.resize(4 * Int32Array.BYTES_PER_ELEMENT); + } + } + for (var i = 0; i < 2; ++i) { + test(); + } +} +testArrayBuffer(); + +function testArrayBufferAndByteOffset() { + function test() { + var ab = new ArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: 5 * Int32Array.BYTES_PER_ELEMENT}); + for (var i = 0; i < 200; ++i) { + var ta = new Int32Array(ab, Int32Array.BYTES_PER_ELEMENT); + assertEq(ta.length, 3); + + // Ensure auto-length tracking works correctly. + ab.resize(5 * Int32Array.BYTES_PER_ELEMENT); + assertEq(ta.length, 4); + + ab.resize(2 * Int32Array.BYTES_PER_ELEMENT); + assertEq(ta.length, 1); + + // Reset to original length. + ab.resize(4 * Int32Array.BYTES_PER_ELEMENT); + } + } + for (var i = 0; i < 2; ++i) { + test(); + } +} +testArrayBufferAndByteOffset(); + +function testArrayBufferAndByteOffsetAndLength() { + function test() { + var ab = new ArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: 5 * Int32Array.BYTES_PER_ELEMENT}); + for (var i = 0; i < 200; ++i) { + var ta = new Int32Array(ab, Int32Array.BYTES_PER_ELEMENT, 2); + assertEq(ta.length, 2); + + // Ensure length doesn't change when resizing the buffer. + ab.resize(5 * Int32Array.BYTES_PER_ELEMENT); + assertEq(ta.length, 2); + + // Returns zero when the TypedArray get out-of-bounds. + ab.resize(2 * Int32Array.BYTES_PER_ELEMENT); + assertEq(ta.length, 0); + + // Reset to original length. + ab.resize(4 * Int32Array.BYTES_PER_ELEMENT); + } + } + for (var i = 0; i < 2; ++i) { + test(); + } +} +testArrayBufferAndByteOffsetAndLength(); + +function testWrappedArrayBuffer() { + var g = newGlobal(); + + function test() { + var ab = new g.ArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: 5 * Int32Array.BYTES_PER_ELEMENT}); + for (var i = 0; i < 200; ++i) { + var ta = new Int32Array(ab); + assertEq(ta.length, 4); + + // Ensure auto-length tracking works correctly. + ab.resize(5 * Int32Array.BYTES_PER_ELEMENT); + assertEq(ta.length, 5); + + ab.resize(2 * Int32Array.BYTES_PER_ELEMENT); + assertEq(ta.length, 2); + + // Reset to original length. + ab.resize(4 * Int32Array.BYTES_PER_ELEMENT); + } + } + for (var i = 0; i < 2; ++i) { + test(); + } +} +testWrappedArrayBuffer(); |