angular-cn/modules/angular2/test/facade/async_spec.ts

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import {
describe,
it,
expect,
beforeEach,
ddescribe,
iit,
xit,
el,
SpyObject,
AsyncTestCompleter,
inject,
IS_DARTIUM
} from 'angular2/test_lib';
import {ObservableWrapper, EventEmitter, PromiseWrapper} from 'angular2/src/facade/async';
import {ListWrapper} from 'angular2/src/facade/collection';
export function main() {
describe('EventEmitter', () => {
var emitter: EventEmitter;
beforeEach(() => { emitter = new EventEmitter(); });
it("should call the next callback", inject([AsyncTestCompleter], (async) => {
ObservableWrapper.subscribe(emitter, (value) => {
expect(value).toEqual(99);
async.done();
});
ObservableWrapper.callNext(emitter, 99);
}));
it("should call the throw callback", inject([AsyncTestCompleter], (async) => {
ObservableWrapper.subscribe(emitter, (_) => {}, (error) => {
expect(error).toEqual("Boom");
async.done();
});
ObservableWrapper.callThrow(emitter, "Boom");
}));
it("should work when no throw callback is provided", inject([AsyncTestCompleter], (async) => {
ObservableWrapper.subscribe(emitter, (_) => {}, (_) => { async.done(); });
ObservableWrapper.callThrow(emitter, "Boom");
}));
it("should call the return callback", inject([AsyncTestCompleter], (async) => {
ObservableWrapper.subscribe(emitter, (_) => {}, (_) => {}, () => { async.done(); });
ObservableWrapper.callReturn(emitter);
}));
it("should subscribe to the wrapper asynchronously", () => {
var called = false;
ObservableWrapper.subscribe(emitter, (value) => { called = true; });
ObservableWrapper.callNext(emitter, 99);
expect(called).toBe(false);
});
// TODO: vsavkin: add tests cases
// should call dispose on the subscription if generator returns {done:true}
// should call dispose on the subscription on throw
// should call dispose on the subscription on return
});
// See ECMAScript 6 Spec 25.4.4.1
describe("PromiseWrapper", () => {
describe("#all", () => {
it("should combine lists of Promises", inject([AsyncTestCompleter], (async) => {
var one = PromiseWrapper.completer();
var two = PromiseWrapper.completer();
var all = PromiseWrapper.all([one.promise, two.promise]);
var allCalled = false;
PromiseWrapper.then(one.promise, (_) => {
expect(allCalled).toBe(false);
two.resolve('two');
return null;
});
PromiseWrapper.then(all, (_) => {
allCalled = true;
async.done();
return null;
});
one.resolve('one');
}));
ListWrapper.forEach([null, true, false, 10, 'thing', {}, []], (abruptCompletion) => {
it(`should treat "${abruptCompletion}" as an "abrupt completion"`,
inject([AsyncTestCompleter], (async) => {
var one = PromiseWrapper.completer();
var all = PromiseWrapper.all([one.promise, abruptCompletion]);
PromiseWrapper.then(all, (val) => {
expect(val[1]).toEqual(abruptCompletion);
async.done();
});
one.resolve('one');
}));
});
});
});
}