Ngx-bootstrap: StaticInjectorError(Platform: core)[BsModalService -> ComponentLoaderFactory]:

[buddyackerman]

Bug description or feature request:

I get this error in my unit tests for a directive that uses the BsModalService. Here's the error being thrown in the unit test (using Jasmine):

StaticInjectorError(Platform: core)[BsModalService -> ComponentLoaderFactory]:
NullInjectorError: No provider for ComponentLoaderFactory!
Error: StaticInjectorError(DynamicTestModule)[BsModalService -> ComponentLoaderFactory]:

My testbed setup:

beforeEach(async(() => {
    TestBed.configureTestingModule({
      providers: [
        BsModalService,
        BsModalRef,
        Title,
        { provide: SessionKeepAliveService, useClass: SessionKeepAliveStubService },
        { provide: ApplicationStateService, useClass: ApplicationStateStubService },
        { provide: DocumentService, useClass: MockDocumentService }
      ],
      imports: []
    });
}));

My unit test:

it('should set sessionTimeOutLength to the value from the KeepALiveService',
    async(inject([ApplicationStateService, SessionKeepAliveService, BsModalService, Title, DocumentService],
    (appStateService: ApplicationStateService, keepAliveService: SessionKeepAliveService, modalService: BsModalService, titleService: Title, documentService: DocumentService) 
    => {
      const directive = new SessionTimeoutDirective(appStateService, keepAliveService, modalService, titleService, documentService);
      keepAliveService.keepSessionAlive().subscribe(t => {
        expect(directive.sessionTimeoutLength).toEqual(t.sessionTimeout);
      });
})));

Versions of ngx-bootstrap, Angular, and Bootstrap:

ngx-bootstrap: 2.0.5

Angular: 5.2.6

Bootstrap: 3.x

Build system: Angular CLI, System.js, webpack, starter seed:

Angular Cli: v1.6.8
webpack: v3.10,
jasmine: v2.8

[buddyackerman]

Found that the testbed setup needed needed an import for ModalModule.forRoot()

beforeEach(async(() => {
    TestBed.configureTestingModule({
      providers: [
        BsModalService,
        BsModalRef,
        Title,
        { provide: SessionKeepAliveService, useClass: SessionKeepAliveStubService },
        { provide: ApplicationStateService, useClass: ApplicationStateStubService },
        { provide: DocumentService, useClass: MockDocumentService }
      ],
      imports: [ModalModule.forRoot()]
    });
}));