對于有問題的測試，我模擬了一些回調并將它們傳遞給我正在測試的函數。我在模擬中添加了 console.log 只是為了嘗試調試正在發生的事情。這些 console.log 正在測試日志中打印出來，因此看起來好像模擬回調實際上在測試期間被正確調用（請參閱下面的測試輸出）但是當我執行 expect(mockedFunction).toBeCalled() 時斷言失敗。我不明白為什么它會失敗，因為模擬回調在測試運行時注銷到控制臺。這是我的代碼：這是我要測試的代碼。import IAccount from './IAccount';import IAccountManager from './IAccountManager';import firebase from '../firebase/Firebase';import { stringHasASymbol } from '../../common/Utility';export class FirebaseAccountManager implements IAccountManager {  register(newAccount: IAccount, successCallback: (response: any) => any, errorCallback: (error: any) => any): void {    console.log("called: FirebaseAccountManager:register()");    firebase.register(newAccount.email, newAccount.password, newAccount.firstName + " " + newAccount.lastName)      .then(response => {        console.log("GOT HERE 1", response)        successCallback(true);      })      .catch(error => {        console.log("GOT HERE 2", error)        errorCallback({ code: this.convertRegisterErrorCode(error.code), message: error.message })      });  }  private convertRegisterErrorCode(code: string): string {    if (code === 'auth/email-already-in-use') {      return 'email-already-in-use';    }    return 'unsupported-error-type: firebase error code = ' + stringHasASymbol;  }}這是我的測試：import { FirebaseAccountManager } from './FirebaseAccountManager';import IAccount from './IAccount';jest.mock('firebase/app', () => (  {    auth: jest.fn().mockReturnThis(),    initializeApp: jest.fn(),    createUserWithEmailAndPassword: jest.fn()      .mockResolvedValueOnce(true)      .mockRejectedValueOnce({        code: 'invalid-email'      })  }));const mockSuccessCallback = jest.fn((response: any) => {  console.log("MOCK SUCCESS CALLBACK CALLED", response);  return 'Success!';});const mockErrorCallback = jest.fn((error: any) => {  console.log("MOCK ERROR CALLBACK CALLED", error);  return { code: 'invalid-email', message: 'this email is already in use' }});afterEach(() => {  jest.clearAllMocks();});});