angular-cn/packages/zone.js/test/common/microtasks.spec.ts

101 lines
2.9 KiB
TypeScript

/**
* @license
* Copyright Google Inc. 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
*/
describe('Microtasks', function() {
if (!global.Promise) return;
function scheduleFn(task: Task) { Promise.resolve().then(<any>task.invoke); }
it('should execute microtasks enqueued in the root zone', function(done) {
const log: number[] = [];
Zone.current.scheduleMicroTask('test', () => log.push(1), undefined, scheduleFn);
Zone.current.scheduleMicroTask('test', () => log.push(2), undefined, scheduleFn);
Zone.current.scheduleMicroTask('test', () => log.push(3), undefined, scheduleFn);
setTimeout(function() {
expect(log).toEqual([1, 2, 3]);
done();
}, 10);
});
it('should correctly scheduleMacroTask microtasks vs macrotasks', function(done) {
const log = ['+root'];
Zone.current.scheduleMicroTask('test', () => log.push('root.mit'), undefined, scheduleFn);
setTimeout(function() {
log.push('+mat1');
Zone.current.scheduleMicroTask('test', () => log.push('mat1.mit'), undefined, scheduleFn);
log.push('-mat1');
}, 10);
setTimeout(function() { log.push('mat2'); }, 30);
setTimeout(function() {
expect(log).toEqual(['+root', '-root', 'root.mit', '+mat1', '-mat1', 'mat1.mit', 'mat2']);
done();
}, 40);
log.push('-root');
});
it('should execute Promise wrapCallback in the zone where they are scheduled', function(done) {
const resolvedPromise = Promise.resolve(null);
const testZone = Zone.current.fork({name: ''});
testZone.run(function() {
resolvedPromise.then(function() {
expect(Zone.current.name).toBe(testZone.name);
done();
});
});
});
it('should execute Promise wrapCallback in the zone where they are scheduled even if resolved ' +
'in different zone.',
function(done) {
let resolve: Function;
const promise = new Promise(function(rs) { resolve = rs; });
const testZone = Zone.current.fork({name: 'test'});
testZone.run(function() {
promise.then(function() {
expect(Zone.current).toBe(testZone);
done();
});
});
Zone.current.fork({name: 'test'}).run(function() { resolve(null); });
});
describe('Promise', function() {
it('should go through scheduleTask', function(done) {
let called = false;
const testZone = Zone.current.fork({
name: 'test',
onScheduleTask: function(delegate: ZoneDelegate, current: Zone, target: Zone, task: Task):
Task {
called = true;
delegate.scheduleTask(target, task);
return task;
}
});
testZone.run(function() {
Promise.resolve('value').then(function() {
expect(called).toEqual(true);
done();
});
});
});
});
});