Question

我已经创建了一个Angular库，其中包含一个简单的组件和一个服务，该服务执行HTTP调用并获取结果，然后将其消耗在该组件中。

所有工作都可以找到，除了测试不会因依赖项注入错误而通过：

Error: StaticInjectorError(DynamicTestModule)[HttpClient]:
   StaticInjectorError(Platform: core)[HttpClient]:
   NullInjectorError: No provider for HttpClient!

供参考，这是我的代码：

@Injectable({
  providedIn: "root"
})
export class MyService {
  public apiUrl = "https://apiurl";

  constructor(private http: HttpClient) {}

  getSomeData(key: string): Observable<string> {
    return this.http.get(
      `${this.apiUrl}/${key}`,
      { responseType: "text" }
    );
  }
}

测试：

describe('MyService', () => {
  let injector : TestBed;

  beforeEach(() => {
    TestBed.configureTestingModule({
      providers: [
        MyService
      ],
      imports: [
        HttpClientTestingModule
      ],
    });

    injector = getTestBed();

  });

  it('should be created', () => {
    const service = injector.get(MyService);
    expect(service).toBeTruthy();
  });
});

我的猜测是，这与@ angular-devkit有关，但我可能错了。是的，我尝试了所有变体，甚至尝试注入真正的http-client，该客户端也不起作用。

Answer 1

我查看了您的存储库，发现您专注于function isAlphabetical(str) { // we iterate only while i<length-1 to avoid going out of bounds when doing str[i+1] for (let i = 0, n = str.length - 1; i < n; i++) { if (str[i] > str[i + 1]) return false; // at least one letter is making it not ordered // else keep checking other letters } return true; // if we reached here, its ordered }文件，但是忘记了在测试组件时没有导入ngx-pass-strength.service.spec.ts。

ngx-pass-strength.component.spec.ts

HttpClientTestingModule

测试Angular Library时依赖项注入失败

1 个答案: