322 lines
11 KiB
TypeScript
322 lines
11 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 {EventEmitter} from '@angular/core';
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import {Injectable} from '@angular/core/src/di';
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import {Testability, TestabilityRegistry} from '@angular/core/src/testability/testability';
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import {NgZone} from '@angular/core/src/zone/ng_zone';
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import {AsyncTestCompleter, SpyObject, beforeEach, describe, expect, inject, it} from '@angular/core/testing/src/testing_internal';
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import {scheduleMicroTask} from '../../src/util';
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// Schedules a task to be run after Testability checks for oustanding tasks. Since Testability
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// uses a 0 second timeout to check for outstanding tasks we add our 0 second timeout after a
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// micro task (which ensures Testability's timeout is run first).
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function afterTestabilityCheck(fn: Function): void {
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scheduleMicroTask(() => setTimeout(fn));
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}
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@Injectable()
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class MockNgZone extends NgZone {
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/** @internal */
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onUnstable: EventEmitter<any>;
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/** @internal */
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onStable: EventEmitter<any>;
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constructor() {
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super({enableLongStackTrace: false});
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this.onUnstable = new EventEmitter(false);
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this.onStable = new EventEmitter(false);
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}
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unstable(): void { this.onUnstable.emit(null); }
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stable(): void { this.onStable.emit(null); }
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}
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{
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describe('Testability', () => {
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let testability: Testability;
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let execute: any;
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let execute2: any;
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let ngZone: MockNgZone;
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beforeEach(() => {
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ngZone = new MockNgZone();
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testability = new Testability(ngZone);
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execute = new SpyObject().spy('execute');
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execute2 = new SpyObject().spy('execute');
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});
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describe('Pending count logic', () => {
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it('should start with a pending count of 0',
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() => { expect(testability.getPendingRequestCount()).toEqual(0); });
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it('should fire whenstable callbacks if pending count is 0',
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inject([AsyncTestCompleter], (async: AsyncTestCompleter) => {
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testability.whenStable(execute);
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afterTestabilityCheck(() => {
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expect(execute).toHaveBeenCalled();
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async.done();
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});
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}));
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it('should not fire whenstable callbacks synchronously if pending count is 0', () => {
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testability.whenStable(execute);
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expect(execute).not.toHaveBeenCalled();
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});
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it('should not call whenstable callbacks when there are pending counts',
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inject([AsyncTestCompleter], (async: AsyncTestCompleter) => {
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testability.increasePendingRequestCount();
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testability.increasePendingRequestCount();
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testability.whenStable(execute);
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afterTestabilityCheck(() => {
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expect(execute).not.toHaveBeenCalled();
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testability.decreasePendingRequestCount();
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afterTestabilityCheck(() => {
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expect(execute).not.toHaveBeenCalled();
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async.done();
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});
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});
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}));
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it('should fire whenstable callbacks when pending drops to 0',
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inject([AsyncTestCompleter], (async: AsyncTestCompleter) => {
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testability.increasePendingRequestCount();
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testability.whenStable(execute);
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afterTestabilityCheck(() => {
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expect(execute).not.toHaveBeenCalled();
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testability.decreasePendingRequestCount();
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afterTestabilityCheck(() => {
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expect(execute).toHaveBeenCalled();
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async.done();
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});
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});
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}));
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it('should not fire whenstable callbacks synchronously when pending drops to 0', () => {
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testability.increasePendingRequestCount();
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testability.whenStable(execute);
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testability.decreasePendingRequestCount();
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expect(execute).not.toHaveBeenCalled();
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});
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it('should fire whenstable callbacks with didWork if pending count is 0',
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inject([AsyncTestCompleter], (async: AsyncTestCompleter) => {
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testability.whenStable(execute);
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afterTestabilityCheck(() => {
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expect(execute).toHaveBeenCalledWith(false);
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async.done();
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});
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}));
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it('should fire whenstable callbacks with didWork when pending drops to 0',
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inject([AsyncTestCompleter], (async: AsyncTestCompleter) => {
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testability.increasePendingRequestCount();
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testability.whenStable(execute);
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afterTestabilityCheck(() => {
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testability.decreasePendingRequestCount();
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afterTestabilityCheck(() => {
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expect(execute).toHaveBeenCalledWith(true);
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testability.whenStable(execute2);
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afterTestabilityCheck(() => {
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expect(execute2).toHaveBeenCalledWith(false);
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async.done();
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});
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});
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});
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}));
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});
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describe('NgZone callback logic', () => {
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it('should fire whenstable callback if event is already finished',
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inject([AsyncTestCompleter], (async: AsyncTestCompleter) => {
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ngZone.unstable();
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ngZone.stable();
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testability.whenStable(execute);
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afterTestabilityCheck(() => {
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expect(execute).toHaveBeenCalled();
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async.done();
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});
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}));
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it('should not fire whenstable callbacks synchronously if event is already finished', () => {
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ngZone.unstable();
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ngZone.stable();
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testability.whenStable(execute);
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expect(execute).not.toHaveBeenCalled();
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});
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it('should fire whenstable callback when event finishes',
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inject([AsyncTestCompleter], (async: AsyncTestCompleter) => {
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ngZone.unstable();
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testability.whenStable(execute);
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afterTestabilityCheck(() => {
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expect(execute).not.toHaveBeenCalled();
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ngZone.stable();
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afterTestabilityCheck(() => {
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expect(execute).toHaveBeenCalled();
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async.done();
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});
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});
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}));
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it('should not fire whenstable callbacks synchronously when event finishes', () => {
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ngZone.unstable();
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testability.whenStable(execute);
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ngZone.stable();
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expect(execute).not.toHaveBeenCalled();
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});
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it('should not fire whenstable callback when event did not finish',
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inject([AsyncTestCompleter], (async: AsyncTestCompleter) => {
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ngZone.unstable();
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testability.increasePendingRequestCount();
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testability.whenStable(execute);
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afterTestabilityCheck(() => {
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expect(execute).not.toHaveBeenCalled();
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testability.decreasePendingRequestCount();
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afterTestabilityCheck(() => {
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expect(execute).not.toHaveBeenCalled();
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ngZone.stable();
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afterTestabilityCheck(() => {
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expect(execute).toHaveBeenCalled();
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async.done();
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});
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});
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});
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}));
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it('should not fire whenstable callback when there are pending counts',
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inject([AsyncTestCompleter], (async: AsyncTestCompleter) => {
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ngZone.unstable();
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testability.increasePendingRequestCount();
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testability.increasePendingRequestCount();
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testability.whenStable(execute);
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afterTestabilityCheck(() => {
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expect(execute).not.toHaveBeenCalled();
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ngZone.stable();
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afterTestabilityCheck(() => {
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expect(execute).not.toHaveBeenCalled();
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testability.decreasePendingRequestCount();
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afterTestabilityCheck(() => {
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expect(execute).not.toHaveBeenCalled();
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testability.decreasePendingRequestCount();
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afterTestabilityCheck(() => {
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expect(execute).toHaveBeenCalled();
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async.done();
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});
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});
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});
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});
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}));
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it('should fire whenstable callback with didWork if event is already finished',
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inject([AsyncTestCompleter], (async: AsyncTestCompleter) => {
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ngZone.unstable();
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ngZone.stable();
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testability.whenStable(execute);
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afterTestabilityCheck(() => {
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expect(execute).toHaveBeenCalledWith(true);
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testability.whenStable(execute2);
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afterTestabilityCheck(() => {
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expect(execute2).toHaveBeenCalledWith(false);
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async.done();
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});
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});
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}));
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it('should fire whenstable callback with didwork when event finishes',
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inject([AsyncTestCompleter], (async: AsyncTestCompleter) => {
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ngZone.unstable();
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testability.whenStable(execute);
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afterTestabilityCheck(() => {
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ngZone.stable();
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afterTestabilityCheck(() => {
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expect(execute).toHaveBeenCalledWith(true);
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testability.whenStable(execute2);
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afterTestabilityCheck(() => {
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expect(execute2).toHaveBeenCalledWith(false);
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async.done();
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});
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});
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});
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}));
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});
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});
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describe('TestabilityRegistry', () => {
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let testability1: Testability;
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let testability2: Testability;
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let resgitry: TestabilityRegistry;
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let ngZone: MockNgZone;
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beforeEach(() => {
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ngZone = new MockNgZone();
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testability1 = new Testability(ngZone);
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testability2 = new Testability(ngZone);
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resgitry = new TestabilityRegistry();
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});
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describe('unregister testability', () => {
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it('should remove the testability when unregistering an existing testability', () => {
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resgitry.registerApplication('testability1', testability1);
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resgitry.registerApplication('testability2', testability2);
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resgitry.unregisterApplication('testability2');
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expect(resgitry.getAllTestabilities().length).toEqual(1);
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expect(resgitry.getTestability('testability1')).toEqual(testability1);
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});
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it('should remain the same when unregistering a non-existing testability', () => {
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expect(resgitry.getAllTestabilities().length).toEqual(0);
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resgitry.registerApplication('testability1', testability1);
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resgitry.registerApplication('testability2', testability2);
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resgitry.unregisterApplication('testability3');
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expect(resgitry.getAllTestabilities().length).toEqual(2);
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expect(resgitry.getTestability('testability1')).toEqual(testability1);
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expect(resgitry.getTestability('testability2')).toEqual(testability2);
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});
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it('should remove all the testability when unregistering all testabilities', () => {
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resgitry.registerApplication('testability1', testability1);
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resgitry.registerApplication('testability2', testability2);
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resgitry.unregisterAllApplications();
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expect(resgitry.getAllTestabilities().length).toEqual(0);
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});
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});
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});
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}
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