44 lines
1.0 KiB
JavaScript
44 lines
1.0 KiB
JavaScript
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// Copyright 2024 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Tests the object.defineProperty method - ES 15.2.3.6
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var arr = new Array()
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arr[1] = 'foo'
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arr[2] = 'bar'
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arr[3] = '42'
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arr[4] = '43'
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arr[5] = '44'
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// ES6 9.4.2.1
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// If P is 'length', than ArraySetLength(A, Desc).
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assertThrows(
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() => Object.defineProperty(arr, 'length', { value: -1, configurable: true }),
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RangeError,
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'Invalid array length'
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)
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assertThrows(
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() =>
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Object.defineProperty(arr, 'len' + 'gth', {
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value: -1,
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configurable: true
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}),
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RangeError,
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'Invalid array length'
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)
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assertThrows(
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() => Object.defineProperty(arr, 'length', { value: 1, configurable: true }),
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TypeError,
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'Cannot redefine property: length'
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)
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Object.defineProperty(arr, 'length', { value: 10 })
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desc = Object.getOwnPropertyDescriptor(arr, 'length')
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assertEquals(desc.value, 10)
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assertTrue(desc.writable)
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assertFalse(desc.enumerable)
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assertFalse(desc.configurable)
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