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452c0e5c61
* Automated assertion message update: Array.from * Automated assertion message update: Array.isArray * Automated assertion message update: Array length property * Automated assertion message update: Array.of * Automated assertion message update: Array * Automated assertion message update: Array.prototype.at * Automated assertion message update: Array.prototype.concat * Automated assertion message update: compareArray -> assert.compareArray
63 lines
2.4 KiB
JavaScript
63 lines
2.4 KiB
JavaScript
// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-arraysetlength
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description: >
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Ordinary descriptor validation if [[Value]] is absent.
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info: |
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ArraySetLength ( A, Desc )
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1. If Desc.[[Value]] is absent, then
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a. Return OrdinaryDefineOwnProperty(A, "length", Desc).
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OrdinaryDefineOwnProperty ( O, P, Desc )
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[...]
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3. Return ValidateAndApplyPropertyDescriptor(O, P, extensible, Desc, current).
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ValidateAndApplyPropertyDescriptor ( O, P, extensible, Desc, current )
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[...]
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4. If current.[[Configurable]] is false, then
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a. If Desc.[[Configurable]] is present and its value is true, return false.
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b. If Desc.[[Enumerable]] is present and
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! SameValue(Desc.[[Enumerable]], current.[[Enumerable]]) is false, return false.
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[...]
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6. Else if ! SameValue(! IsDataDescriptor(current), ! IsDataDescriptor(Desc)) is false, then
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a. If current.[[Configurable]] is false, return false.
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[...]
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7. Else if IsDataDescriptor(current) and IsDataDescriptor(Desc) are both true, then
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a. If current.[[Configurable]] is false and current.[[Writable]] is false, then
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i. If Desc.[[Writable]] is present and Desc.[[Writable]] is true, return false.
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features: [Reflect]
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---*/
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assert.throws(TypeError, function() {
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Object.defineProperty([], "length", {configurable: true});
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}, 'Object.defineProperty([], "length", {configurable: true}) throws a TypeError exception');
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assert(
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!Reflect.defineProperty([], "length", {enumerable: true}),
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'The value of !Reflect.defineProperty([], "length", {enumerable: true}) is expected to be true'
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);
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assert.throws(TypeError, function() {
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Object.defineProperty([], "length", {
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get: function() {
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throw new Test262Error("[[Get]] shouldn't be called");
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},
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});
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}, 'Object.defineProperty([], "length", {get: function() {throw new Test262Error("[[Get]] shouldn"t be called");},}) throws a TypeError exception');
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assert(
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!Reflect.defineProperty([], "length", {set: function(_value) {}}),
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'The value of !Reflect.defineProperty([], "length", {set: function(_value) {}}) is expected to be true'
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);
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var array = [];
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Object.defineProperty(array, "length", {writable: false});
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assert.throws(TypeError, function() {
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Object.defineProperty(array, "length", {writable: true});
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}, 'Object.defineProperty(array, "length", {writable: true}) throws a TypeError exception');
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