diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/TypedArrayConstructors/internals/HasProperty/resizable-array-buffer-auto.js')
-rw-r--r-- | js/src/tests/test262/built-ins/TypedArrayConstructors/internals/HasProperty/resizable-array-buffer-auto.js | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/HasProperty/resizable-array-buffer-auto.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/HasProperty/resizable-array-buffer-auto.js new file mode 100644 index 0000000000..223834ba20 --- /dev/null +++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/HasProperty/resizable-array-buffer-auto.js @@ -0,0 +1,64 @@ +// |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-integer-indexed-exotic-objects-hasproperty-p +description: returned keys reflect resized ArrayBuffer for a dynamically-sized TypedArray +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"); + +function inspect(array) { + return [ + Reflect.has(array, 0), + Reflect.has(array, 1), + Reflect.has(array, 2), + Reflect.has(array, 3), + Reflect.has(array, 4) + ].join(","); +} + +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 = "true,true,true,false,false"; + + assert.sameValue(inspect(array), expected, "initial"); + + try { + ab.resize(BPE * 5); + expected = "true,true,true,true,false"; + } catch (_) {} + + assert.sameValue(inspect(array), expected, "following grow"); + + try { + ab.resize(BPE * 3); + expected = "true,true,false,false,false"; + } catch (_) {} + + assert.sameValue(inspect(array), expected, "following shrink (within bounds)"); + + try { + ab.resize(BPE); + expected = "false,false,false,false,false"; + } catch (_) {} + + assert.sameValue(inspect(array), expected, "following shrink (on boundary)"); + + try { + ab.resize(0); + expected = "false,false,false,false,false"; + } catch (_) {} + + assert.sameValue(inspect(array), expected, "following shrink (out of bounds)"); +}); + +reportCompare(0, 0); |