a7e1f236ff
- updates tests - heavy prose revisions - uses HttpClient (with angular-in-memory-web-api) - test HeroService using `HttpClientTestingModule` - scrub away most By.CSS - fake async observable with `asyncData()` - extensive Twain work - different take on retryWhen - remove app barrels (& systemjs.extras) which troubled plunker/systemjs - add dummy export const to hero.ts (plunkr/systemjs fails w/o it) - shrink and re-organize TOC - add marble testing package and tests - demonstrate the "no beforeEach()" test coding style - add section on Http service testing - prepare for stackblitz - confirm works in plunker except excluded marble test - add tests for avoidFile class feature of CodeExampleComponent PR Close #20697
70 lines
2.1 KiB
TypeScript
70 lines
2.1 KiB
TypeScript
// tslint:disable-next-line:no-unused-variable
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import { async, fakeAsync, tick } from '@angular/core/testing';
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import { of } from 'rxjs/observable/of';
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import { delay } from 'rxjs/operators';
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describe('Angular async helper', () => {
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let actuallyDone = false;
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beforeEach(() => { actuallyDone = false; });
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afterEach(() => { expect(actuallyDone).toBe(true, 'actuallyDone should be true'); });
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it('should run normal test', () => { actuallyDone = true; });
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it('should run normal async test', (done: DoneFn) => {
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setTimeout(() => {
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actuallyDone = true;
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done();
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}, 0);
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});
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it('should run async test with task',
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async(() => { setTimeout(() => { actuallyDone = true; }, 0); }));
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it('should run async test with successful promise', async(() => {
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const p = new Promise(resolve => { setTimeout(resolve, 10); });
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p.then(() => { actuallyDone = true; });
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}));
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it('should run async test with failed promise', async(() => {
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const p = new Promise((resolve, reject) => { setTimeout(reject, 10); });
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p.catch(() => { actuallyDone = true; });
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}));
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// Use done. Cannot use setInterval with async or fakeAsync
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// See https://github.com/angular/angular/issues/10127
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it('should run async test with successful delayed Observable', (done: DoneFn) => {
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const source = of(true).pipe(delay(10));
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source.subscribe(
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val => actuallyDone = true,
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err => fail(err),
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done
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);
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});
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// Cannot use setInterval from within an async zone test
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// See https://github.com/angular/angular/issues/10127
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// xit('should run async test with successful delayed Observable', async(() => {
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// const source = of(true).pipe(delay(10));
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// source.subscribe(
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// val => actuallyDone = true,
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// err => fail(err)
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// );
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// }));
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// // Fail message: Error: 1 periodic timer(s) still in the queue
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// // See https://github.com/angular/angular/issues/10127
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// xit('should run async test with successful delayed Observable', fakeAsync(() => {
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// const source = of(true).pipe(delay(10));
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// source.subscribe(
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// val => actuallyDone = true,
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// err => fail(err)
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// );
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// tick();
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// }));
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});
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