angular 2 次测试 w/router
angular 2 testing w/router
我有一个组件,当用户登录时,它会路由到一个名为 /dashboard
的 url,我真的很难弄清楚为什么会出现以下错误。
cannot read property 'args' of undefined
我一直在关注此处找到的有关使用路由器进行测试的官方文档 https://angular.io/docs/ts/latest/guide/testing.html#!#routed-component
但它似乎没有帮助。我的一半问题是我不太理解文档中的所有代码。这是我对路线的单元测试
beforeEach(async(()=>{
class AuthStub{
private loggedin: boolean = false;
login(){
return this.loggedin = true;
}
};
class RouterStub{
navigateByUrl(url:string){return url;}
}
TestBed.configureTestingModule({
declarations: [ HomePageContentComponent ],
providers:[
{provide: Auth, useClass:AuthStub},
{provide: Router, useClass: RouterStub}
]
})
.compileComponents()
}));
beforeEach(()=>{
fixture = TestBed.createComponent(HomePageContentComponent);
comp = fixture.componentInstance;
de = fixture.debugElement.query(By.css('.loginbtn'));
el = de.nativeElement;
fixture.detectChanges();
});
it('Should log in and navigate to dashboard', inject([Router],(router:Router)=>{
const spy = spyOn(router, 'navigateByUrl');
el.click();
const navArgs = spy.calls.first().args[0];
expect(navArgs).toBe('/dashboard');
}))
});
所以我的问题是这行代码在做什么...
const navArgs = spy.calls.first().args[0];
我该如何解决我的问题?
已添加服务
@Injectable()
export class Auth {
lock = new Auth0Lock('fakefakefakefakefake', 'fake.auth0.com', {
additionalSignUpFields: [{
name: "address",
placeholder: "enter your address"
}],
theme: {
primaryColor:"#b3b3b3",
},
languageDictionary: {
title: "FAKE"
}
});
userProfile: any;
constructor(private router: Router) {
this.userProfile = JSON.parse(localStorage.getItem('profile'));
this.lock.on("authenticated", (authResult) => {
localStorage.setItem('id_token', authResult.idToken);
this.lock.getProfile(authResult.idToken, (error, profile) => {
if (error) {
alert(error);
return;
}
profile.user_metadata = profile.user_metadata || {};
localStorage.setItem('profile', JSON.stringify(profile));
this.userProfile = profile;
});
this.router.navigate(['/dashboard']);
});
}
public login(){
this.lock.show();
};
public authenticated() {
return tokenNotExpired();
};
public logout() {
localStorage.removeItem('id_token');
localStorage.removeItem('profile');
this.router.navigate(['/logout']);
};
}
假设您有以下组件:
@Component({
selector: 'home-comp',
template: `<button (click)="login()" class="loginbtn">Login</button>
`
})
export class HomePageContentComponent {
constructor(private auth: Auth, private router: Router) { }
login() {
this.router.navigateByUrl(`/dashboard`);
}
}
在您的测试中,将真实的 Router
替换为模拟版本后:
{ provide: Router, useClass: RouterStub }
在你的案例中:
it('Should log in and navigate to dashboard', inject([Router],(router:Router)=>{
router
将是 RouterStub
.
的实例
然后你监视 navigateByUrl
方法来观察它被调用了多少次
const spy = spyOn(router, 'navigateByUrl');
所以当你点击 .loginbtn
按钮时 router.navigateByUrl
是 运行 (见上面的组件)并且 spy
递增 calls
一些信息(对于例如,所谓的参数)
终于在这一行
const navArgs = spy.calls.first().args[0];
预计您的 router.navigateByUrl
方法至少被调用一次,然后从第一次调用中获取传递的参数。
这里正在工作Live Example
可能你哪里出错了,你的router.navigateByUrl
没有被执行。
我有一个组件,当用户登录时,它会路由到一个名为 /dashboard
的 url,我真的很难弄清楚为什么会出现以下错误。
cannot read property 'args' of undefined
我一直在关注此处找到的有关使用路由器进行测试的官方文档 https://angular.io/docs/ts/latest/guide/testing.html#!#routed-component 但它似乎没有帮助。我的一半问题是我不太理解文档中的所有代码。这是我对路线的单元测试
beforeEach(async(()=>{
class AuthStub{
private loggedin: boolean = false;
login(){
return this.loggedin = true;
}
};
class RouterStub{
navigateByUrl(url:string){return url;}
}
TestBed.configureTestingModule({
declarations: [ HomePageContentComponent ],
providers:[
{provide: Auth, useClass:AuthStub},
{provide: Router, useClass: RouterStub}
]
})
.compileComponents()
}));
beforeEach(()=>{
fixture = TestBed.createComponent(HomePageContentComponent);
comp = fixture.componentInstance;
de = fixture.debugElement.query(By.css('.loginbtn'));
el = de.nativeElement;
fixture.detectChanges();
});
it('Should log in and navigate to dashboard', inject([Router],(router:Router)=>{
const spy = spyOn(router, 'navigateByUrl');
el.click();
const navArgs = spy.calls.first().args[0];
expect(navArgs).toBe('/dashboard');
}))
});
所以我的问题是这行代码在做什么...
const navArgs = spy.calls.first().args[0];
我该如何解决我的问题?
已添加服务
@Injectable()
export class Auth {
lock = new Auth0Lock('fakefakefakefakefake', 'fake.auth0.com', {
additionalSignUpFields: [{
name: "address",
placeholder: "enter your address"
}],
theme: {
primaryColor:"#b3b3b3",
},
languageDictionary: {
title: "FAKE"
}
});
userProfile: any;
constructor(private router: Router) {
this.userProfile = JSON.parse(localStorage.getItem('profile'));
this.lock.on("authenticated", (authResult) => {
localStorage.setItem('id_token', authResult.idToken);
this.lock.getProfile(authResult.idToken, (error, profile) => {
if (error) {
alert(error);
return;
}
profile.user_metadata = profile.user_metadata || {};
localStorage.setItem('profile', JSON.stringify(profile));
this.userProfile = profile;
});
this.router.navigate(['/dashboard']);
});
}
public login(){
this.lock.show();
};
public authenticated() {
return tokenNotExpired();
};
public logout() {
localStorage.removeItem('id_token');
localStorage.removeItem('profile');
this.router.navigate(['/logout']);
};
}
假设您有以下组件:
@Component({
selector: 'home-comp',
template: `<button (click)="login()" class="loginbtn">Login</button>
`
})
export class HomePageContentComponent {
constructor(private auth: Auth, private router: Router) { }
login() {
this.router.navigateByUrl(`/dashboard`);
}
}
在您的测试中,将真实的 Router
替换为模拟版本后:
{ provide: Router, useClass: RouterStub }
在你的案例中:
it('Should log in and navigate to dashboard', inject([Router],(router:Router)=>{
router
将是 RouterStub
.
然后你监视 navigateByUrl
方法来观察它被调用了多少次
const spy = spyOn(router, 'navigateByUrl');
所以当你点击 .loginbtn
按钮时 router.navigateByUrl
是 运行 (见上面的组件)并且 spy
递增 calls
一些信息(对于例如,所谓的参数)
终于在这一行
const navArgs = spy.calls.first().args[0];
预计您的 router.navigateByUrl
方法至少被调用一次,然后从第一次调用中获取传递的参数。
这里正在工作Live Example
可能你哪里出错了,你的router.navigateByUrl
没有被执行。