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Diffstat (limited to 'js/src/tests/test262/built-ins/TypedArrayConstructors/internals/OwnPropertyKeys/integer-indexes-resizable-array-buffer-auto.js')
-rw-r--r-- | js/src/tests/test262/built-ins/TypedArrayConstructors/internals/OwnPropertyKeys/integer-indexes-resizable-array-buffer-auto.js | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/OwnPropertyKeys/integer-indexes-resizable-array-buffer-auto.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/OwnPropertyKeys/integer-indexes-resizable-array-buffer-auto.js new file mode 100644 index 0000000000..83995def30 --- /dev/null +++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/OwnPropertyKeys/integer-indexes-resizable-array-buffer-auto.js @@ -0,0 +1,70 @@ +// |reftest| shell-option(--enable-arraybuffer-resizable) skip-if(!ArrayBuffer.prototype.resize||!xulRuntime.shell) -- resizable-arraybuffer is not enabled unconditionally, requires shell-options +// 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-integer-indexed-exotic-objects-ownpropertykeys +description: returned keys reflect resized ArrayBuffer for a dynamically-sized TypedArray +info: | + 9.4.5.6 [[OwnPropertyKeys]] () + + ... + 3. Let getBufferByteLength be ! + MakeIdempotentArrayBufferByteLengthGetter(SeqCst). + 4. Let len be IntegerIndexedObjectLength(O, getBufferByteLength). + 5. For each integer i starting with 0 such that i < len, in ascending order, + a. Add ! ToString(i) as the last element of keys. + ... +includes: [testTypedArray.js] +features: [Reflect, TypedArray, resizable-arraybuffer] +---*/ + +// If the host chooses to throw as allowed by the specification, the observed +// behavior will be identical to the case where `ArrayBuffer.prototype.resize` +// has not been implemented. The following assertion prevents this test from +// passing in runtimes which have not implemented the method. +assert.sameValue(typeof ArrayBuffer.prototype.resize, "function"); + +testWithTypedArrayConstructors(function(TA) { + var BPE = TA.BYTES_PER_ELEMENT; + var ab = new ArrayBuffer(BPE * 4, {maxByteLength: BPE * 5}); + var array = new TA(ab, BPE); + var expected = "0,1,2"; + + assert.sameValue(Reflect.ownKeys(array).join(","), expected, "initial"); + + try { + ab.resize(BPE * 5); + expected = "0,1,2,3"; + } catch (_) {} + + assert.sameValue(Reflect.ownKeys(array).join(","), expected, "following grow"); + + try { + ab.resize(BPE * 3); + expected = "0,1"; + } catch (_) {} + + assert.sameValue( + Reflect.ownKeys(array).join(","), expected, "following shrink (within bounds)" + ); + + try { + ab.resize(BPE); + expected = ""; + } catch (_) {} + + assert.sameValue( + Reflect.ownKeys(array).join(","), expected, "following shrink (on boundary)" + ); + + try { + ab.resize(0); + expected = ""; + } catch (_) {} + + assert.sameValue( + Reflect.ownKeys(array).join(","), expected, "following shrink (out of bounds)" + ); +}); + +reportCompare(0, 0); |