xiaoxia-saas/tests/unit/test_email_service.py

"""
邮件服务测试
"""

from unittest.mock import MagicMock, patch

import pytest

from packages.adapters.smtp.email_service import EmailConfig, EmailService


class TestEmailService:
    """邮件服务测试"""

    @pytest.fixture
    def email_config(self):
        """创建测试邮件配置"""
        return EmailConfig(
            smtp_host="smtp.test.com",
            smtp_port=587,
            smtp_user="test@test.com",
            smtp_password="test-password",
            from_email="noreply@test.com",
            from_name="Test Service",
            use_tls=True,
        )

    @pytest.fixture
    def email_service(self, email_config):
        """创建邮件服务实例"""
        return EmailService(config=email_config)

    @patch("smtplib.SMTP")
    def test_send_email_success(self, mock_smtp, email_service):
        """测试发送邮件成功"""
        # Mock SMTP 服务器
        mock_server = MagicMock()
        mock_smtp.return_value.__enter__.return_value = mock_server

        success, error = email_service.send_email(
            to_email="user@example.com",
            subject="Test Email",
            html_body="<h1>Test</h1>",
            text_body="Test",
        )

        assert success is True
        assert error is None

        # 验证 SMTP 调用
        mock_smtp.assert_called_once_with("smtp.test.com", 587)
        mock_server.starttls.assert_called_once()
        mock_server.login.assert_called_once_with("test@test.com", "test-password")
        mock_server.sendmail.assert_called_once()

    @patch("smtplib.SMTP")
    def test_send_email_with_cc_bcc(self, mock_smtp, email_service):
        """测试发送邮件带抄送和密送"""
        mock_server = MagicMock()
        mock_smtp.return_value.__enter__.return_value = mock_server

        success, error = email_service.send_email(
            to_email="user@example.com",
            subject="Test Email",
            html_body="<h1>Test</h1>",
            cc=["cc1@example.com", "cc2@example.com"],
            bcc=["bcc@example.com"],
        )

        assert success is True

        # 验证收件人列表包含所有人
        call_args = mock_server.sendmail.call_args
        recipients = call_args[0][1]
        assert "user@example.com" in recipients
        assert "cc1@example.com" in recipients
        assert "cc2@example.com" in recipients
        assert "bcc@example.com" in recipients

    @patch("smtplib.SMTP")
    def test_send_email_smtp_error(self, mock_smtp, email_service):
        """测试 SMTP 错误处理"""
        # Mock SMTP 抛出异常
        mock_smtp.side_effect = Exception("SMTP connection failed")

        success, error = email_service.send_email(
            to_email="user@example.com",
            subject="Test",
            html_body="<h1>Test</h1>",
        )

        assert success is False
        assert error is not None
        assert "SMTP connection failed" in error

    @patch("smtplib.SMTP")
    def test_send_verification_email(self, mock_smtp, email_service):
        """测试发送验证邮件"""
        mock_server = MagicMock()
        mock_smtp.return_value.__enter__.return_value = mock_server

        success, error = email_service.send_verification_email(
            to_email="user@example.com",
            username="TestUser",
            verification_url="https://example.com/verify?token=abc123",
        )

        assert success is True
        assert error is None

        # 验证发送了邮件
        mock_server.sendmail.assert_called_once()
        call_args = mock_server.sendmail.call_args

        # 验证收件人
        assert call_args[0][1] == ["user@example.com"]

    @patch("smtplib.SMTP")
    def test_send_password_reset_email(self, mock_smtp, email_service):
        """测试发送密码重置邮件"""
        mock_server = MagicMock()
        mock_smtp.return_value.__enter__.return_value = mock_server

        success, error = email_service.send_password_reset_email(
            to_email="user@example.com",
            username="TestUser",
            reset_url="https://example.com/reset?token=xyz789",
        )

        assert success is True
        assert error is None

        # 验证发送了邮件
        mock_server.sendmail.assert_called_once()
        call_args = mock_server.sendmail.call_args

        # 验证收件人
        assert call_args[0][1] == ["user@example.com"]

    @patch("smtplib.SMTP")
    def test_email_without_tls(self, mock_smtp):
        """测试不使用 TLS 发送邮件"""
        config = EmailConfig(
            smtp_host="smtp.test.com",
            smtp_port=25,
            smtp_user="",
            smtp_password="",
            from_email="test@test.com",
            use_tls=False,
        )
        service = EmailService(config=config)

        mock_server = MagicMock()
        mock_smtp.return_value.__enter__.return_value = mock_server

        success, error = service.send_email(
            to_email="user@example.com",
            subject="Test",
            html_body="Test",
        )

        assert success is True

        # 验证不调用 starttls
        mock_server.starttls.assert_not_called()
        # 验证不调用 login（没有用户名密码）
        mock_server.login.assert_not_called()

    def test_default_config(self):
        """测试默认配置"""
        service = EmailService()

        assert service.config.smtp_host == "smtp.gmail.com"
        assert service.config.smtp_port == 587
        assert service.config.use_tls is True
        assert service.config.from_name == "小虾 SaaS"