小编Kas*_*yap的帖子

I have MainComponent that uses ChildComponentA as a @ViewChild. MainComponent is calling a method on ChildComponentA.

I want to write an unit test case mocking ChildComponentA. How can I do this using TestBed (in Angular 2 RC5)?

Before I used to use overrideDirective(MainComponentName, ChildComponentA, MockChildComponentA); Is there an equivalent to this using TestBed?

I tried using

TestBed.overrideComponent(ChildComponentA,{
        set: {
          template: '<div></div>'
        }
      }); 

which just sets the template, but I want to mock the methods in …

我有page1和page2。我在page2路由上添加了canActivate gaurd，想知道我是否来自page1？我怎么做？

canActivate(next: ActivatedRouteSnapshot, state: RouterStateSnapshot): boolean {
    //If from Page 1 { clearCache() }
    return true;
    }

提前致谢。