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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/built-ins/TypedArray/prototype/reduce/callbackfn-resize.js | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/reduce/callbackfn-resize.js b/js/src/tests/test262/built-ins/TypedArray/prototype/reduce/callbackfn-resize.js new file mode 100644 index 0000000000..a10f3adf0b --- /dev/null +++ b/js/src/tests/test262/built-ins/TypedArray/prototype/reduce/callbackfn-resize.js @@ -0,0 +1,78 @@ +// |reftest| skip -- resizable-arraybuffer is not supported +// Copyright (C) 2021 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +esid: sec-%typedarray%.prototype.reduce +description: Instance buffer can be resized during iteration +includes: [testTypedArray.js, compareArray.js] +features: [TypedArray, resizable-arraybuffer] +---*/ + +testWithTypedArrayConstructors(function(TA) { + var BPE = TA.BYTES_PER_ELEMENT; + var buffer = new ArrayBuffer(BPE * 3, {maxByteLength: BPE * 3}); + var sample = new TA(buffer); + var finalNext, expectedPrevs, expectedNexts, expectedIndices, expectedArrays; + var prevs, nexts, indices, arrays, result; + + prevs = []; + nexts = []; + indices = []; + arrays = []; + result = sample.reduce(function(prev, next, index, array) { + if (prevs.length === 0) { + try { + buffer.resize(2 * BPE); + finalNext = undefined; + expectedPrevs = [262, 0]; + expectedNexts = [0, 0]; + expectedIndices = [0, 1]; + expectedArrays = [sample, sample]; + } catch (_) { + finalNext = 0; + expectedPrevs = [262, 0, 1]; + expectedNexts = [0, 0, 0]; + expectedIndices = [0, 1, 2]; + expectedArrays = [sample, sample, sample]; + } + } + + prevs.push(prev); + nexts.push(next); + indices.push(index); + arrays.push(array); + return index; + }, 262); + + assert.compareArray(prevs, [262, 0, 1], 'prevs (shrink)'); + assert.compareArray(nexts, [0, 0, finalNext], 'nexts (shrink)'); + assert.compareArray(indices, [0, 1, 2], 'indices (shrink)'); + assert.compareArray(arrays, [sample, sample, sample], 'arrays (shrink)'); + assert.sameValue(result, 2, 'result (shrink)'); + + prevs = []; + nexts = []; + indices = []; + arrays = []; + result = sample.reduce(function(prev, next, index, array) { + if (prevs.length === 0) { + try { + buffer.resize(3 * BPE); + } catch (_) {} + } + + prevs.push(prev); + nexts.push(next); + indices.push(index); + arrays.push(array); + return index; + }, 262); + + assert.compareArray(prevs, expectedPrevs, 'prevs (grow)'); + assert.compareArray(nexts, expectedNexts, 'nexts (grow)'); + assert.compareArray(indices, expectedIndices, 'indices (grow)'); + assert.compareArray(arrays, expectedArrays, 'arrays (grow)'); + assert.sameValue(result, expectedIndices[expectedIndices.length - 1], 'result (grow)'); +}); + +reportCompare(0, 0); |