本文整理匯總了TypeScript中angular2/test_lib.fakeAsync函數的典型用法代碼示例。如果您正苦於以下問題：TypeScript fakeAsync函數的具體用法？TypeScript fakeAsync怎麽用？TypeScript fakeAsync使用的例子？那麽, 這裏精選的函數代碼示例或許可以為您提供幫助。
在下文中一共展示了fakeAsync函數的4個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的TypeScript代碼示例。
示例1: describe
describe("updateValue", () => {
var g, c;
beforeEach(() => {
c = new Control("oldValue");
g = new ControlGroup({"one": c});
});
it("should update the value of the control", () => {
c.updateValue("newValue");
expect(c.value).toEqual("newValue");
});
it("should invoke onChange if it is present", () => {
var onChange;
c.registerOnChange((v) => onChange = ["invoked", v]);
c.updateValue("newValue");
expect(onChange).toEqual(["invoked", "newValue"]);
});
it("should not invoke on change when explicitly specified", () => {
var onChange = null;
c.registerOnChange((v) => onChange = ["invoked", v]);
c.updateValue("newValue", {emitModelToViewChange: false});
expect(onChange).toBeNull();
});
it("should update the parent", () => {
c.updateValue("newValue");
expect(g.value).toEqual({"one": "newValue"});
});
it("should not update the parent when explicitly specified", () => {
c.updateValue("newValue", {onlySelf: true});
expect(g.value).toEqual({"one": "oldValue"});
});
it("should fire an event", fakeAsync(() => {
ObservableWrapper.subscribe(c.valueChanges,
(value) => { expect(value).toEqual("newValue"); });
c.updateValue("newValue");
tick();
}));
it("should not fire an event when explicitly specified", fakeAsync(() => {
ObservableWrapper.subscribe(c.valueChanges, (value) => { throw "Should not happen"; });
c.updateValue("newValue", {emitEvent: false});
tick();
}));
});示例2: describe
describe('Promise', () => {
it('should run asynchronous code', fakeAsync(() => {
var thenRan = false;
PromiseWrapper.resolve(null).then((_) => { thenRan = true; });
expect(thenRan).toEqual(false);
flushMicrotasks();
expect(thenRan).toEqual(true);
}));
it('should run chained thens', fakeAsync(() => {
var log = new Log();
PromiseWrapper.resolve(null).then((_) => log.add(1)).then((_) => log.add(2));
expect(log.result()).toEqual('');
flushMicrotasks();
expect(log.result()).toEqual('1; 2');
}));
it('should run Promise created in Promise', fakeAsync(() => {
var log = new Log();
PromiseWrapper.resolve(null).then((_) => {
log.add(1);
PromiseWrapper.resolve(null).then((_) => log.add(2));
});
expect(log.result()).toEqual('');
flushMicrotasks();
expect(log.result()).toEqual('1; 2');
}));
// TODO(vicb): check why this doesn't work in JS - linked to open issues on GH ?
xit('should complain if the test throws an exception during async calls', () => {
expect(() => {
fakeAsync(() => {
PromiseWrapper.resolve(null).then((_) => { throw new BaseException('async'); });
flushMicrotasks();
})();
}).toThrowError('async');
});
it('should complain if a test throws an exception', () => {
expect(() => { fakeAsync(() => { throw new BaseException('sync'); })(); })
.toThrowError('sync');
});
});示例3: it
it('should flush microtasks before returning', () => {
var thenRan = false;
fakeAsync(() => { PromiseWrapper.resolve(null).then(_ => { thenRan = true; }); })();
expect(thenRan).toEqual(true);
});示例4: expect
expect(() => {
fakeAsync(() => {
PromiseWrapper.resolve(null).then((_) => { throw new BaseException('async'); });
flushMicrotasks();
})();
}).toThrowError('async');