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https://github.com/angular/angular
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c07805612f
A lot of our tests are wrapped in `{}` which serves no purpose, aside from increasing the nesting level and, in some cases, causing confusion. The braces appear to be a leftover from a time when all tests were wrapped in a `function main() {}`. The function declaration was removed in #21053, but the braces remained, presumably because it was easier to search&replace for `function main()`, but not to remove the braces at the same time.
PR Close #52239
55 lines
1.9 KiB
TypeScript
55 lines
1.9 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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import {devModeEqual} from '@angular/core/src/util/comparison';
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describe('Comparison util', () => {
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describe('devModeEqual', () => {
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it('should do the deep comparison of iterables', () => {
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expect(devModeEqual([['one']], [['one']])).toBe(true);
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expect(devModeEqual(['one'], ['one', 'two'])).toBe(false);
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expect(devModeEqual(['one', 'two'], ['one'])).toBe(false);
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expect(devModeEqual(['one'], 'one')).toBe(false);
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expect(devModeEqual(['one'], {})).toBe(false);
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expect(devModeEqual('one', ['one'])).toBe(false);
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expect(devModeEqual({}, ['one'])).toBe(false);
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});
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it('should compare primitive numbers', () => {
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expect(devModeEqual(1, 1)).toBe(true);
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expect(devModeEqual(1, 2)).toBe(false);
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expect(devModeEqual({}, 2)).toBe(false);
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expect(devModeEqual(1, {})).toBe(false);
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});
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it('should compare primitive strings', () => {
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expect(devModeEqual('one', 'one')).toBe(true);
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expect(devModeEqual('one', 'two')).toBe(false);
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expect(devModeEqual({}, 'one')).toBe(false);
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expect(devModeEqual('one', {})).toBe(false);
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});
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it('should compare primitive booleans', () => {
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expect(devModeEqual(true, true)).toBe(true);
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expect(devModeEqual(true, false)).toBe(false);
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expect(devModeEqual({}, true)).toBe(false);
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expect(devModeEqual(true, {})).toBe(false);
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});
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it('should compare null', () => {
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expect(devModeEqual(null, null)).toBe(true);
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expect(devModeEqual(null, 1)).toBe(false);
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expect(devModeEqual({}, null)).toBe(false);
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expect(devModeEqual(null, {})).toBe(false);
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});
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it('should return true for other objects', () => {
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expect(devModeEqual({}, {})).toBe(true);
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});
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});
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});
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