angular_component_test.ts

describe('ng-upgrade test', () => {

  beforeEach(async(() => {
    angular.mock.module(appContextModule.name);
    const ng1InjectorProvider = {
      provide: '$injector',
      useFactory: () => {
        return {
          'get': (token: string) => {
            let dependency: {}|null = null;
            inject([
              token,
              function(t: {}) {
                dependency = t;
              }
            ]);

            return dependency;
          },
        };

      },
    };

    TestBed
        .configureTestingModule({
          imports: [ComponentModule],
          providers: [
            ng1InjectorProvider,
            appContextProvider,
          ],
        })
        .compileComponents();
  }));
});

ng1_providers.ts

/**
 * Provider functions for using angularJS services from Angular with ng-upgrade
 */

export function appContextFactory(i: ng.auto.IInjectorService): AppContext {
  return i.get<AppContext>('appContext');
}

export const appContextProvider = {
  provide: AppContext,
  useFactory: appContextFactory,
  deps: ['$injector'],
};