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Stiley's questions

Martin Hope
Stiley
Asked: 2025-02-14 17:56:32 +0800 CST
  • 6

我很难理解茉莉花间谍在构造函数中注入依赖项的服务

我有一个带有构造函数的帐户服务

constructor(private readonly api: ApiService,private readonly authorityService: AuthorityService) {}

在帐户服务中，我有一个使用 authorityService（在构造函数中设置）的方法，在返回值之前检查权限

  public async getAccount(): Promise<Account | null> {
    if (this.authorityService.hasAuthority(Authority.PERM_ACCOUNT_READ)) {
      this.account = await this.api.get<Account>('/admin/rest/account');
      return this.account;
    }
    return null;
  }

我想要做的是为 getAccount 方法提供单元测试。我想要确保 authorityService.hasAuthority(Authority.PERM_ACCOUNT_READ) 何时返回 true 或 false

在我的测试中，我在 .spec.ts 文件中设置了以下内容

存根 authService

class  authorityServiceStub{
  hasAuthority(str: string): boolean {
    return false;
  }
}

然后在我的描述块中我有以下内容

fdescribe('AccountService', () => {
  let service: AccountService;
  let httpTestingController:HttpTestingController
  let authorityServiceDependency:AuthorityService;

  /**
   * Sets up the testing module before each test case.
   */
   beforeEach(waitForAsync(() => {

    TestBed.configureTestingModule({
      imports: [],
      providers: [provideHttpClient(),
        provideHttpClientTesting(),
        AccountService,{
          provide: AuthorityService,
          useClass: authorityServiceStub
        }
        ],
    })

    service = TestBed.inject(AccountService);
    authorityServiceDependency = TestBed.inject(AuthorityService);
    httpTestingController = TestBed.inject(HttpTestingController);
  }));

在我的第一个测试中，我想确保如果权限为 false，则 getAccount() 中的 Account 对象为 null

  it('should return null if not permissions and not forced', async() => {
    spyOn(authorityServiceDependency, 'hasAuthority').withArgs(Authority.PERM_ACCOUNT_READ).and.returnValue(false);
    const account = await service.getAccount();
    expect(account).toBeNull();
    expect(authorityServiceDependency.hasAuthority).toHaveBeenCalledWith(Authority.PERM_ACCOUNT_READ);
    const req = httpTestingController.match((request) =>
      request.url.includes("/admin/rest/account")
    );
  });

此测试通过

但在另一种情况下，我想测试权限设置的时间并验证帐户不为空，我有以下内容

  it('should return the account if the permissions are set', async() => {
    const accountData = {firstName: 'Test',lastName:"tester"} as Account;
    spyOn(authorityServiceDependency, 'hasAuthority').withArgs(Authority.PERM_ACCOUNT_READ).and.returnValue(true);
    spyOn(service, 'getAccount').and.returnValue(Promise.resolve(accountData));
    service.getAccount().then((account) => {
       expect(account).not.toBeNull();
       expect(account?.firstName).toEqual("Test");
       expect(account?.lastName).toEqual("tester");
       expect(service.getAccount).toHaveBeenCalled();

     });
    expect(authorityServiceDependency.hasAuthority).toHaveBeenCalledWith(Authority.PERM_ACCOUNT_READ);
    const req = httpTestingController.match((request) =>
      request.url.includes("/admin/rest/account")
    );
  });

期望expect(authorityServiceDependency.hasAuthority).toHaveBeenCalledWith(Authority.PERM_ACCOUNT_READ);

失败并显示消息

预期间谍 hasAuthority 已被调用：['PERM_ACCOUNT_READ'] 但从未被调用。在 UserContext。（src/app/core/services/account/account.service.spec.ts:86:53）在 Generator.next（）在 asyncGeneratorStep（node_modules/@babel/runtime/helpers/esm/asyncToGenerator.js:3:1）在 _next（node_modules/@babel/runtime/helpers/esm/asyncToGenerator.js:17:1）

我知道我做错了什么，但我无论如何都无法让它按我想要的方式工作。不清楚在我的测试中设置模拟类是否是正确的方法。看起来很笨拙，但我在互联网上的某个地方读到过这种方法，它似乎很有意义，但我有点不适应这里的情况，并希望得到任何见解/指导

angular