angular-cn/packages/zone.js/test/zone-spec/sync-test.spec.ts

60 lines
1.7 KiB
TypeScript

/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {ifEnvSupports} from '../test-util';
describe('SyncTestZoneSpec', () => {
const SyncTestZoneSpec = (Zone as any)['SyncTestZoneSpec'];
let testZoneSpec;
let syncTestZone: Zone;
beforeEach(() => {
testZoneSpec = new SyncTestZoneSpec('name');
syncTestZone = Zone.current.fork(testZoneSpec);
});
it('should fail on Promise.then', () => {
syncTestZone.run(() => {
expect(() => {
Promise.resolve().then(function() {});
}).toThrow(new Error('Cannot call Promise.then from within a sync test.'));
});
});
it('should fail on setTimeout', () => {
syncTestZone.run(() => {
expect(() => {
setTimeout(() => {}, 100);
}).toThrow(new Error('Cannot call setTimeout from within a sync test.'));
});
});
describe('event tasks', ifEnvSupports('document', () => {
it('should work with event tasks', () => {
syncTestZone.run(() => {
const button = document.createElement('button');
document.body.appendChild(button);
let x = 1;
try {
button.addEventListener('click', () => {
x++;
});
button.click();
expect(x).toEqual(2);
button.click();
expect(x).toEqual(3);
} finally {
document.body.removeChild(button);
}
});
});
}));
});