EmailBill/WebApi.Test/Application/EmailMessageApplicationTest.cs

using Application.Dto.Email;
using Service.EmailServices;

namespace WebApi.Test.Application;

/// <summary>
/// EmailMessageApplication 单元测试
/// </summary>
public class EmailMessageApplicationTest : BaseApplicationTest
{
    private readonly IEmailMessageRepository _emailRepository;
    private readonly ITransactionRecordRepository _transactionRepository;
    private readonly IEmailHandleService _emailHandleService;
    private readonly IEmailSyncService _emailSyncService;
    private readonly ILogger<EmailMessageApplication> _logger;
    private readonly EmailMessageApplication _application;

    public EmailMessageApplicationTest()
    {
        _emailRepository = Substitute.For<IEmailMessageRepository>();
        _transactionRepository = Substitute.For<ITransactionRecordRepository>();
        _emailHandleService = Substitute.For<IEmailHandleService>();
        _emailSyncService = Substitute.For<IEmailSyncService>();
        _logger = CreateMockLogger<EmailMessageApplication>();
        _application = new EmailMessageApplication(
            _emailRepository,
            _transactionRepository,
            _emailHandleService,
            _emailSyncService,
            _logger);
    }

    #region GetListAsync Tests

    [Fact]
    public async Task GetListAsync_正常查询_应返回邮件列表()
    {
        // Arrange
        var emailList = new List<EmailMessage>
        {
            new() { Id = 1, Subject = "测试邮件1", From = "test@example.com", ReceivedDate = DateTime.Now },
            new() { Id = 2, Subject = "测试邮件2", From = "test2@example.com", ReceivedDate = DateTime.Now }
        };
        
        _emailRepository.GetPagedListAsync(Arg.Any<DateTime?>(), Arg.Any<long?>())
            .Returns((emailList, DateTime.Now, 2L));
        _emailRepository.GetTotalCountAsync().Returns(2L);
        _transactionRepository.GetCountByEmailIdAsync(Arg.Any<long>()).Returns(5);

        var request = new EmailQueryRequest();

        // Act
        var result = await _application.GetListAsync(request);

        // Assert
        result.Should().NotBeNull();
        result.Data.Should().HaveCount(2);
        result.Total.Should().Be(2);
        result.Data[0].TransactionCount.Should().Be(5);
    }

    #endregion

    #region GetByIdAsync Tests

    [Fact]
    public async Task GetByIdAsync_存在的邮件_应返回邮件详情()
    {
        // Arrange
        var email = new EmailMessage
        {
            Id = 1,
            Subject = "测试邮件",
            From = "test@example.com",
            Body = "邮件内容",
            To = "接收人 <receiver@example.com>",
            ReceivedDate = DateTime.Now
        };

        _emailRepository.GetByIdAsync(1).Returns(email);
        _transactionRepository.GetCountByEmailIdAsync(1).Returns(3);

        // Act
        var result = await _application.GetByIdAsync(1);

        // Assert
        result.Should().NotBeNull();
        result.Id.Should().Be(1);
        result.Subject.Should().Be("测试邮件");
        result.TransactionCount.Should().Be(3);
        result.ToName.Should().Be("接收人");
    }

    [Fact]
    public async Task GetByIdAsync_邮件不存在_应抛出NotFoundException()
    {
        // Arrange
        _emailRepository.GetByIdAsync(999).Returns((EmailMessage?)null);

        // Act & Assert
        await Assert.ThrowsAsync<NotFoundException>(() => _application.GetByIdAsync(999));
    }

    #endregion

    #region DeleteByIdAsync Tests

    [Fact]
    public async Task DeleteByIdAsync_成功删除_应不抛出异常()
    {
        // Arrange
        _emailRepository.DeleteAsync(1).Returns(true);

        // Act
        await _application.DeleteByIdAsync(1);

        // Assert
        await _emailRepository.Received(1).DeleteAsync(1);
    }

    [Fact]
    public async Task DeleteByIdAsync_删除失败_应抛出BusinessException()
    {
        // Arrange
        _emailRepository.DeleteAsync(999).Returns(false);

        // Act & Assert
        await Assert.ThrowsAsync<BusinessException>(() => _application.DeleteByIdAsync(999));
    }

    #endregion

    #region RefreshTransactionRecordsAsync Tests

    [Fact]
    public async Task RefreshTransactionRecordsAsync_邮件存在且刷新成功_应不抛出异常()
    {
        // Arrange
        var email = new EmailMessage { Id = 1, Subject = "测试邮件" };
        _emailRepository.GetByIdAsync(1).Returns(email);
        _emailHandleService.RefreshTransactionRecordsAsync(1).Returns(true);

        // Act
        await _application.RefreshTransactionRecordsAsync(1);

        // Assert
        await _emailHandleService.Received(1).RefreshTransactionRecordsAsync(1);
    }

    [Fact]
    public async Task RefreshTransactionRecordsAsync_邮件不存在_应抛出NotFoundException()
    {
        // Arrange
        _emailRepository.GetByIdAsync(999).Returns((EmailMessage?)null);

        // Act & Assert
        await Assert.ThrowsAsync<NotFoundException>(() => 
            _application.RefreshTransactionRecordsAsync(999));
    }

    [Fact]
    public async Task RefreshTransactionRecordsAsync_刷新失败_应抛出BusinessException()
    {
        // Arrange
        var email = new EmailMessage { Id = 1, Subject = "测试邮件" };
        _emailRepository.GetByIdAsync(1).Returns(email);
        _emailHandleService.RefreshTransactionRecordsAsync(1).Returns(false);

        // Act & Assert
        await Assert.ThrowsAsync<BusinessException>(() => 
            _application.RefreshTransactionRecordsAsync(1));
    }

    #endregion

    #region SyncEmailsAsync Tests

    [Fact]
    public async Task SyncEmailsAsync_应调用邮件同步服务()
    {
        // Act
        await _application.SyncEmailsAsync();

        // Assert
        await _emailSyncService.Received(1).SyncEmailsAsync();
    }

    #endregion
}