d1ea1f4c7f
Update the license headers throughout the repository to reference Google LLC rather than Google Inc, for the required license headers. PR Close #37205
40 lines
1.3 KiB
TypeScript
40 lines
1.3 KiB
TypeScript
/**
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* @license
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* Copyright Google LLC All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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describe('defineProperty', function() {
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it('should not throw when defining length on an array', function() {
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const someArray: any[] = [];
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expect(() => Object.defineProperty(someArray, 'length', {value: 2, writable: false}))
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.not.toThrow();
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});
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it('should not be able to change a frozen desc', function() {
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const obj = {};
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const desc = Object.freeze({value: null, writable: true});
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Object.defineProperty(obj, 'prop', desc);
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let objDesc: any = Object.getOwnPropertyDescriptor(obj, 'prop');
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expect(objDesc.writable).toBeTruthy();
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try {
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Object.defineProperty(obj, 'prop', {configurable: true, writable: true, value: 'test'});
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} catch (err) {
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}
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objDesc = Object.getOwnPropertyDescriptor(obj, 'prop');
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expect(objDesc.configurable).toBeFalsy();
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});
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it('should not throw error when try to defineProperty with a frozen obj', function() {
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const obj = {};
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Object.freeze(obj);
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try {
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Object.defineProperty(obj, 'prop', {configurable: true, writable: true, value: 'value'});
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} catch (err) {
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}
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expect((obj as any).prop).toBeFalsy();
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});
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});
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