dd69e4e780
This commit removes code duplication where we had 2 versions of a `flatten` utility. Moreover this change results in queries using a non-recursive version of `flatten` which should result in a better performance of query refresh operations. PR Close #29547
69 lines
2.3 KiB
TypeScript
69 lines
2.3 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. 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/change_detection/change_detection_util';
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import {isDifferent} from '../../src/render3/util/misc_utils';
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describe('util', () => {
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describe('isDifferent', () => {
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describe('checkNoChangeMode = false', () => {
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it('should mark non-equal arguments as different', () => {
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expect(isDifferent({}, {})).toBeTruthy();
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expect(isDifferent('foo', 'bar')).toBeTruthy();
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expect(isDifferent(0, 1)).toBeTruthy();
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});
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it('should not mark equal arguments as different', () => {
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const obj = {};
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expect(isDifferent(obj, obj)).toBeFalsy();
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expect(isDifferent('foo', 'foo')).toBeFalsy();
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expect(isDifferent(1, 1)).toBeFalsy();
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});
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it('should not mark NaN as different', () => { expect(isDifferent(NaN, NaN)).toBeFalsy(); });
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it('should mark NaN with other values as different', () => {
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expect(isDifferent(NaN, 'foo')).toBeTruthy();
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expect(isDifferent(5, NaN)).toBeTruthy();
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});
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});
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describe('checkNoChangeMode = true', () => {
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// Assert relaxed constraint in checkNoChangeMode
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it('should not mark non-equal arrays, object and function as different', () => {
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expect(!devModeEqual([], [])).toBeFalsy();
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expect(!devModeEqual(() => 0, () => 0)).toBeFalsy();
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expect(!devModeEqual({}, {})).toBeFalsy();
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});
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it('should mark non-equal arguments as different', () => {
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expect(!devModeEqual('foo', 'bar')).toBeTruthy();
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expect(!devModeEqual(0, 1)).toBeTruthy();
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});
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it('should not mark equal arguments as different', () => {
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const obj = {};
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expect(isDifferent(obj, obj)).toBeFalsy();
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expect(isDifferent('foo', 'foo')).toBeFalsy();
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expect(isDifferent(1, 1)).toBeFalsy();
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});
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it('should not mark NaN as different', () => { expect(isDifferent(NaN, NaN)).toBeFalsy(); });
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it('should mark NaN with other values as different', () => {
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expect(isDifferent(NaN, 'foo')).toBeTruthy();
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expect(isDifferent(5, NaN)).toBeTruthy();
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});
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});
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});
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});
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