NullInjectorError: R3InjectorError(DynamicTestModule)[AdminTestCentersComponent -> ToastrService -> InjectionToken ToastConfig -> InjectionToken ToastConfig]: NullInjectorError: No provider for InjectionToken ToastConfig!
// Angular - Jasmine
// Error: NullInjectorError: R3InjectorError(DynamicTestModule)[AdminTestCentersComponent -> ToastrService -> InjectionToken ToastConfig -> InjectionToken ToastConfig]: NullInjectorError: No provider for InjectionToken ToastConfig!
beforeEach(async(() => {
TestBed.configureTestingModule({
imports: [ToastrModule.forRoot()],
})
.compileComponents();
}));