79 lines
2.4 KiB
TypeScript
79 lines
2.4 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 {CommonModule, JsonPipe} from '@angular/common';
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import {Component} from '@angular/core';
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import {TestBed, async} from '@angular/core/testing';
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import {expect} from '@angular/platform-browser/testing/src/matchers';
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{
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describe('JsonPipe', () => {
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const regNewLine = '\n';
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let inceptionObj: any;
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let inceptionObjString: string;
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let pipe: JsonPipe;
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function normalize(obj: string): string { return obj.replace(regNewLine, ''); }
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beforeEach(() => {
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inceptionObj = {dream: {dream: {dream: 'Limbo'}}};
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inceptionObjString = '{\n' +
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' "dream": {\n' +
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' "dream": {\n' +
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' "dream": "Limbo"\n' +
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' }\n' +
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' }\n' +
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'}';
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pipe = new JsonPipe();
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});
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describe('transform', () => {
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it('should return JSON-formatted string',
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() => { expect(pipe.transform(inceptionObj)).toEqual(inceptionObjString); });
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it('should return JSON-formatted string even when normalized', () => {
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const dream1 = normalize(pipe.transform(inceptionObj));
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const dream2 = normalize(inceptionObjString);
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expect(dream1).toEqual(dream2);
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});
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it('should return JSON-formatted string similar to Json.stringify', () => {
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const dream1 = normalize(pipe.transform(inceptionObj));
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const dream2 = normalize(JSON.stringify(inceptionObj, null, 2));
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expect(dream1).toEqual(dream2);
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});
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});
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describe('integration', () => {
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@Component({selector: 'test-comp', template: '{{data | json}}'})
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class TestComp {
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data: any;
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}
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beforeEach(() => {
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TestBed.configureTestingModule({declarations: [TestComp], imports: [CommonModule]});
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});
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it('should work with mutable objects', async(() => {
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const fixture = TestBed.createComponent(TestComp);
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const mutable: number[] = [1];
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fixture.componentInstance.data = mutable;
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fixture.detectChanges();
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expect(fixture.nativeElement).toHaveText('[\n 1\n]');
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mutable.push(2);
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fixture.detectChanges();
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expect(fixture.nativeElement).toHaveText('[\n 1,\n 2\n]');
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}));
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});
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});
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}
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