实战指南：利用 xUnit.DependencyInjection 在单位测试中实现依赖注入【完 - IT评测·应用市场-qidao123.com技术社区

PM> NuGet\Install-Package Xunit.DependencyInjection -Version 9.1.0

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public class StaffRepositoryTest
{
[Fact]
public void DependencyInject_WhenCalled_ReturnTrue()
{
Assert.True(true);
}
}

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<Project>
<PropertyGroup>
<EnableXunitDependencyInjectionDefaultTestFrameworkAttribute>false</EnableXunitDependencyInjectionDefaultTestFrameworkAttribute>
</PropertyGroup>
</Project>

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public class Startup
{
}

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public IHostBuilder CreateHostBuilder([AssemblyName assemblyName]) { }

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public void ConfigureHost(IHostBuilder hostBuilder) { }

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public void Configure()
{
}

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public static IServiceCollection AddEFCoreInMemoryAndRepository(this IServiceCollection services)
{
services.AddScoped<IStaffRepository, StaffRepository>();
services.AddDbContext<SampleDbContext>(options => options.UseInMemoryDatabase("sample").EnableSensitiveDataLogging(), ServiceLifetime.Scoped);
return services;
}

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public void ConfigureServices(IServiceCollection services, HostBuilderContext context)
{
services.AddEFCoreInMemoryAndRepository();
}

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public class StaffRepositoryTest
{
private readonly IStaffRepository _staffRepository;
public StaffRepositoryTest(IStaffRepository staffRepository)
{
_staffRepository = staffRepository;
}
}

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public class StaffRepositoryTest
{
private readonly IStaffRepository _staffRepository;
public StaffRepositoryTest(IStaffRepository staffRepository)
{
_staffRepository = staffRepository;
}
//[Fact]
//public void DependencyInject_WhenCalled_ReturnTrue()
//{
// Assert.True(true);
//}
[Fact]
public async Task AddStaffAsync_WhenCalled_ShouldAddStaffToDatabase()
{
// Arrange
var staff = new Staff { Name = "zhangsan", Email = "zhangsan@163.com" };
// Act
await _staffRepository.AddStaffAsync(staff, CancellationToken.None);
// Assert
var retrievedStaff = await _staffRepository.GetStaffByIdAsync(staff.Id, CancellationToken.None);
Assert.NotNull(retrievedStaff); // 确保 Staff 已成功添加到数据库
Assert.Equal("zhangsan", retrievedStaff.Name); // 检查名称是否正确
}
[Fact]
public async Task DeleteStaffAsync_WhenCalled_ShouldDeleteStaffFromDatabase()
{
var staff = new Staff { Name = "John", Email = "john@example.com" };
await _staffRepository.AddStaffAsync(staff, CancellationToken.None); // 先添加一个 Staff
// Act
await _staffRepository.DeleteStaffAsync(staff.Id, CancellationToken.None); // 删除该 Staff
// Assert
var retrievedStaff = await _staffRepository.GetStaffByIdAsync(staff.Id, CancellationToken.None); // 尝试获取已删除的 Staff
Assert.Null(retrievedStaff); // 确保已经删除
}
[Fact]
public async Task UpdateStaffAsync_WhenCalled_ShouldUpdateStaffInDatabase()
{
// Arrange
var staff = new Staff { Name = "John", Email = "john@example.com" };
await _staffRepository.AddStaffAsync(staff, CancellationToken.None); // 先添加一个 Staff
// Act
staff.Name = "Updated Name";
await _staffRepository.UpdateStaffAsync(staff, CancellationToken.None); // 更新 Staff
// Assert
var updatedStaff = await _staffRepository.GetStaffByIdAsync(staff.Id, CancellationToken.None); // 获取已更新的 Staff
Assert.Equal("Updated Name", updatedStaff?.Name); // 确保 Staff 已更新
}
[Fact]
public async Task GetStaffByIdAsync_WhenCalledWithValidId_ShouldReturnStaffFromDatabase()
{
// Arrange
var staff = new Staff { Name = "John", Email = "john@example.com" };
await _staffRepository.AddStaffAsync(staff, CancellationToken.None); // 先添加一个 Staff
// Act
var retrievedStaff = await _staffRepository.GetStaffByIdAsync(staff.Id, CancellationToken.None); // 获取 Staff
// Assert
Assert.NotNull(retrievedStaff); // 确保成功获取 Staff
}
[Fact]
public async Task GetAllStaffAsync_WhenCalled_ShouldReturnAllStaffFromDatabase()
{
// Arrange
var staff1 = new Staff { Name = "John", Email = "john@example.com" };
var staff2 = new Staff { Name = "Alice", Email = "alice@example.com" };
await _staffRepository.AddStaffAsync(staff1, CancellationToken.None); // 先添加 Staff1
await _staffRepository.AddStaffAsync(staff2, CancellationToken.None); // 再添加 Staff2
// Act
var allStaff = await _staffRepository.GetAllStaffAsync(CancellationToken.None); // 获取所有 Staff
// Assert
List<Staff> addStaffs = [staff1, staff2];
Assert.True(addStaffs.All(_ => allStaff.Any(x => x.Id == _.Id))); // 确保成功获取所有 Staff
}
}

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public class DependencyInjectionTest
{
private readonly ITestOutputHelperAccessor _testOutputHelperAccessor;
public DependencyInjectionTest(ITestOutputHelperAccessor testOutputHelperAccessor)
{
_testOutputHelperAccessor = testOutputHelperAccessor;
}
[Fact]
public void TestOutPut_Console()
{
_testOutputHelperAccessor.Output?.WriteLine("测试ITestOutputHelperAccessor");
Assert.True(true);
}
}

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PM> NuGet\Install-Package Xunit.DependencyInjection.Logging -Version 9.0.0

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public void ConfigureServices(IServiceCollection services)
=> services.AddLogging(lb => lb.AddXunitOutput());

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public class DependencyInjectionTest
{
private readonly ILogger<DependencyInjectionTest> _logger;
public DependencyInjectionTest(ILogger<DependencyInjectionTest> logger)
{
_logger = logger;
}
[Fact]
public void Test()
{
_logger.LogDebug("LogDebug");
_logger.LogInformation("LogInformation");
_logger.LogError("LogError");
}
}

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标准输出:
[2024-04-12 16:00:24Z] info: dotNetParadise.DependencyInjection.DependencyInjectionTest[0]
LogInformation
[2024-04-12 16:00:24Z] fail: dotNetParadise.DependencyInjection.DependencyInjectionTest[0]
LogError

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public void ConfigureServices(HostBuilderContext context)
{
context.HostingEnvironment.EnvironmentName = "test";
//使用配置
context.Configuration.GetChildren();
}

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public class Startup
{
public void ConfigureHost(IHostBuilder hostBuilder) =>
hostBuilder
.ConfigureServices((context, services) => { context.XXXX });
}

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PM> NuGet\Install-Package Microsoft.AspNetCore.TestHost -Version 9.0.0-preview.3.24172.13

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public void ConfigureHost(IHostBuilder hostBuilder) =>
hostBuilder.ConfigureWebHost[Defaults](webHostBuilder => webHostBuilder
.UseTestServer(options => options.PreserveExecutionContext = true)
.UseStartup<AspNetCoreStartup>());

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