diff options
Diffstat (limited to 'js/src/jit-test/tests/dataview/resizable-dataview-byteoffset.js')
-rw-r--r-- | js/src/jit-test/tests/dataview/resizable-dataview-byteoffset.js | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/dataview/resizable-dataview-byteoffset.js b/js/src/jit-test/tests/dataview/resizable-dataview-byteoffset.js new file mode 100644 index 0000000000..3f0afa1169 --- /dev/null +++ b/js/src/jit-test/tests/dataview/resizable-dataview-byteoffset.js @@ -0,0 +1,67 @@ +// |jit-test| --enable-arraybuffer-resizable; skip-if: !ArrayBuffer.prototype.resize + +load(libdir + "asserts.js"); + +function testResizableArrayBufferAutoLength() { + for (let i = 0; i < 4; ++i) { + let ab = new ArrayBuffer(i, {maxByteLength: i + 1}); + let ta = new DataView(ab); + for (let j = 0; j < 100; ++j) { + ab.resize(i); + assertEq(ta.byteOffset, 0); + + ab.resize(i + 1); + assertEq(ta.byteOffset, 0); + + if (i > 0) { + ab.resize(i - 1); + assertEq(ta.byteOffset, 0); + } + } + } +} +for (let i = 0; i < 2; ++i) testResizableArrayBufferAutoLength(); + +function testResizableArrayBufferAutoLengthNonZeroOffset() { + for (let i = 1; i < 4 + 1; ++i) { + let ab = new ArrayBuffer(i, {maxByteLength: i + 1}); + let ta = new DataView(ab, 1); + for (let j = 0; j < 100; ++j) { + ab.resize(i); + assertEq(ta.byteOffset, 1); + + ab.resize(i + 1); + assertEq(ta.byteOffset, 1); + + ab.resize(i - 1); + if (i > 1) { + assertEq(ta.byteOffset, 1); + } else { + assertThrowsInstanceOf(() => ta.byteOffset, TypeError); + } + } + } +} +for (let i = 0; i < 2; ++i) testResizableArrayBufferAutoLengthNonZeroOffset(); + +function testResizableArrayBufferNonZeroOffset() { + for (let i = 2; i < 4 + 2; ++i) { + let ab = new ArrayBuffer(i, {maxByteLength: i + 1}); + let ta = new DataView(ab, 1, 1); + for (let j = 0; j < 100; ++j) { + ab.resize(i); + assertEq(ta.byteOffset, 1); + + ab.resize(i + 1); + assertEq(ta.byteOffset, 1); + + ab.resize(i - 1); + if (i > 2) { + assertEq(ta.byteOffset, 1); + } else { + assertThrowsInstanceOf(() => ta.byteOffset, TypeError); + } + } + } +} +for (let i = 0; i < 2; ++i) testResizableArrayBufferNonZeroOffset(); |