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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/built-ins/TypedArray/prototype/findLast/this-is-not-typedarray-instance.js | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/findLast/this-is-not-typedarray-instance.js b/js/src/tests/test262/built-ins/TypedArray/prototype/findLast/this-is-not-typedarray-instance.js new file mode 100644 index 0000000000..d86c6593a8 --- /dev/null +++ b/js/src/tests/test262/built-ins/TypedArray/prototype/findLast/this-is-not-typedarray-instance.js @@ -0,0 +1,43 @@ +// Copyright (C) 2021 Microsoft. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +esid: sec-%typedarray%.prototype.findlast +description: > + Throws a TypeError exception when `this` is not a TypedArray instance +info: | + %TypedArray%.prototype.findLast (predicate [ , thisArg ] ) + + 2. Perform ? ValidateTypedArray(O). + + 22.2.3.5.1 Runtime Semantics: ValidateTypedArray ( O ) + + 1. If Type(O) is not Object, throw a TypeError exception. + 2. If O does not have a [[TypedArrayName]] internal slot, throw a TypeError + exception. + ... +includes: [testTypedArray.js] +features: [TypedArray, array-find-from-last] +---*/ + +var findlast = TypedArray.prototype.findlast; +var predicate = function() {}; + +assert.throws(TypeError, function() { + findlast.call({}, predicate); +}, "this is an Object"); + +assert.throws(TypeError, function() { + findlast.call([], predicate); +}, "this is an Array"); + +var ab = new ArrayBuffer(8); +assert.throws(TypeError, function() { + findlast.call(ab, predicate); +}, "this is an ArrayBuffer instance"); + +var dv = new DataView(new ArrayBuffer(8), 0, 1); +assert.throws(TypeError, function() { + findlast.call(dv, predicate); +}, "this is a DataView instance"); + +reportCompare(0, 0); |