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我正在使用 Jest 运行集成测试，以测试向用户发送密码恢复电子邮件。

在我的用例中，我使用 tsyringe 注入电子邮件发送服务（使用 ethereal、nodemailer）。该服务的实例属于类型registerInstance，以便应用程序一启动就可以创建客户端。

container.registerInstance<IMailProvider>('EtherealMailProvider', new EtherealMailProvider());

通过 Insomnia 执行请求，响应成功并发送电子邮件，但在集成测试中不会发生同样的情况。有谁知道为什么？

这是我得到的错误：

  {
     status: 'error',
     message: "Internal server error - Cannot read property 'sendMail' of undefined"
  }

调用电子邮件服务的用例：

import { resolve } from 'path';
import { inject, injectable } from 'tsyringe';
import { v4 as uuidV4 } from 'uuid';

import { IUsersRepository } from '@modules/accounts/repositories/IUsersRepository';
import { IUsersTokensRepository } from '@modules/accounts/repositories/IUsersTokensRepository';
import { IDateProvider } from '@shared/container/providers/DateProvider/IDateProvider';
import { IMailProvider } from '@shared/container/providers/MailProvider/IMailProvider';
import { AppError } from '@shared/errors/AppError';

@injectable()
class SendForgotPasswordMailUseCase {
  constructor(
    @inject('UsersRepository')
    private usersRepository: IUsersRepository,
    @inject('UsersTokensRepository')
    private usersTokensRepository: IUsersTokensRepository,
    @inject('DayJsDateProvider')
    private dateProvider: IDateProvider,
    @inject('EtherealMailProvider')
    private mailProvider: IMailProvider
  ) {}

  async execute(email: string): Promise<void> {
    const user = await this.usersRepository.findByEmail(email);

    if (!user) throw new AppError('User does not exists!');

    const token = uuidV4();

    const expires_date = this.dateProvider.addHours(3);

    await this.usersTokensRepository.create({
      refresh_token: token,
      user_id: user.id,
      expires_date,
    });

    const templatePath = resolve(__dirname, '..', '..', 'views', 'emails', 'forgotPassword.hbs');

    const variables = {
      name: user.name,
      link: `${process.env.FORGOT_MAIL_URL}${token}`,
    };

    await this.mailProvider.sendMail(email, 'Recovery Password', variables, templatePath);
  }
}

export { SendForgotPasswordMailUseCase };

电子邮件服务：

import { resolve } from 'path';
import { inject, injectable } from 'tsyringe';
import { v4 as uuidV4 } from 'uuid';

import { IUsersRepository } from '@modules/accounts/repositories/IUsersRepository';
import { IUsersTokensRepository } from '@modules/accounts/repositories/IUsersTokensRepository';
import { IDateProvider } from '@shared/container/providers/DateProvider/IDateProvider';
import { IMailProvider } from '@shared/container/providers/MailProvider/IMailProvider';
import { AppError } from '@shared/errors/AppError';

@injectable()
class SendForgotPasswordMailUseCase {
  constructor(
    @inject('UsersRepository')
    private usersRepository: IUsersRepository,
    @inject('UsersTokensRepository')
    private usersTokensRepository: IUsersTokensRepository,
    @inject('DayJsDateProvider')
    private dateProvider: IDateProvider,
    @inject('EtherealMailProvider')
    private mailProvider: IMailProvider
  ) {}

  async execute(email: string): Promise<void> {
    const user = await this.usersRepository.findByEmail(email);

    if (!user) throw new AppError('User does not exists!');

    const token = uuidV4();

    const expires_date = this.dateProvider.addHours(3);

    await this.usersTokensRepository.create({
      refresh_token: token,
      user_id: user.id,
      expires_date,
    });

    const templatePath = resolve(__dirname, '..', '..', 'views', 'emails', 'forgotPassword.hbs');

    const variables = {
      name: user.name,
      link: `${process.env.FORGOT_MAIL_URL}${token}`,
    };

    await this.mailProvider.sendMail(email, 'Recovery Password', variables, templatePath);
  }
}

export { SendForgotPasswordMailUseCase };

应用程序中的控制器具有接收来自的电子邮件request.body并将其传递给 useCase 的唯一功能。

这是更新存储库的链接： 代码在 integration_tests_for_sending_password_reset_mail 分支中

https://github.com/i-ramoss/rentx/tree/integration_tests_for_sending_password_reset_mail

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