![Angular 4 unit test cases: Injecting router module error "ReferenceError: Router is not defined" - Stack Overflow Angular 4 unit test cases: Injecting router module error "ReferenceError: Router is not defined" - Stack Overflow](https://i.stack.imgur.com/jgUcE.png)
Angular 4 unit test cases: Injecting router module error "ReferenceError: Router is not defined" - Stack Overflow
ERROR Error: Uncaught (in promise): Error: StaticInjectorError[e]: · Issue #20339 · angular/angular · GitHub
![No provider for Overlay! StaticInjectorError(AppModule)[MatMenuTrigger -> Overlay]: · Issue #10820 · angular/components · GitHub No provider for Overlay! StaticInjectorError(AppModule)[MatMenuTrigger -> Overlay]: · Issue #10820 · angular/components · GitHub](https://user-images.githubusercontent.com/2789203/38680656-247aacc0-3e67-11e8-927e-2e1ceac8ae24.png)
No provider for Overlay! StaticInjectorError(AppModule)[MatMenuTrigger -> Overlay]: · Issue #10820 · angular/components · GitHub
Angular 5.0.0 error: StaticInjectorError[InjectionToken DocumentToken] · Issue #20101 · angular/angular · GitHub
![html - ERROR Error: StaticInjectorError(AppModule)[StorieControllerComponent -> DataService]: - Stack Overflow html - ERROR Error: StaticInjectorError(AppModule)[StorieControllerComponent -> DataService]: - Stack Overflow](https://i.stack.imgur.com/tHRc8.png)
html - ERROR Error: StaticInjectorError(AppModule)[StorieControllerComponent -> DataService]: - Stack Overflow
![Testing Angular router events in practice | by Karim Karimov | Practical Angular Karma testing | Medium Testing Angular router events in practice | by Karim Karimov | Practical Angular Karma testing | Medium](https://miro.medium.com/max/1400/1*DVDv-xE9PAcqLjgELV22Cg.png)
Testing Angular router events in practice | by Karim Karimov | Practical Angular Karma testing | Medium
![unit testing - Karma + Jasmine + Angular 4 - NullInjectorError: No provider for HttpClient - Stack Overflow unit testing - Karma + Jasmine + Angular 4 - NullInjectorError: No provider for HttpClient - Stack Overflow](https://i.stack.imgur.com/ULtow.jpg)
unit testing - Karma + Jasmine + Angular 4 - NullInjectorError: No provider for HttpClient - Stack Overflow
![StaticInjectorError(Platform: core)[RegisterStoreComponent -> Router]: NullInjectorError: No provider for Router! Angular 5.2 / Karma-jasmine - Stack Overflow StaticInjectorError(Platform: core)[RegisterStoreComponent -> Router]: NullInjectorError: No provider for Router! Angular 5.2 / Karma-jasmine - Stack Overflow](https://i.stack.imgur.com/0Q8yX.png)