xUnit httpClient获取返回404未找到

Question

我正在尝试在一个从实体框架返回数据的简单控制器上运行集成测试。我已经编写了单元测试，并且所有工作都按预期进行。

我已经连接了xUnit Integration测试，但是当我运行一个简单的Get to my controller时，却找不到404。如果我在浏览器中启动该项目并通过邮递员运行get命令，则会命中控制器并正确执行操作。

我的xUnit TestFixture类

public sealed class TestFixture<TStartup> : IDisposable where TStartup : class
{
    public readonly TestServer Server;
    public readonly HttpClient Client;

    public TestFixture()
    {
        var builder = BuildWebHost();
        Server = new TestServer(builder);
        Client = Server.CreateClient();
    }

    public static IWebHostBuilder BuildWebHost()
    {
        var host = new WebHostBuilder()
            .UseStartup<TestStartup>()
            .ConfigureAppConfiguration((hostContext, config) =>
              {
                  config.Sources.Clear();
                  config.SetBasePath(Directory.GetCurrentDirectory());
                  config.AddJsonFile("appsettings.test.json", optional: true, reloadOnChange: true);
              });
        return host;
    }
}

我的控制器测试课程

public class FlowApiControllerTests : IClassFixture<TestFixture<Startup>>
{
    private readonly HttpClient _httpClient;

    public FlowApiControllerTests(TestFixture<Startup> fixture)
    {
        _httpClient = fixture.Client;
    }

    [Fact]
    public async Task Get_FlowApiTest()
    {
        var response = await _httpClient.GetAsync("/flowapi");

        response.StatusCode.Should().Be(HttpStatusCode.OK);
        var content = await response.Content.ReadAsStringAsync();
        var model = JsonConvert.DeserializeObject<List<FlowApi>>(content);
        model.Count.Should().Be(2);
    }
}

最后是我的控制器

[Route("[controller]")]
[ApiController]
public class FlowApiController : ControllerBase
{
    private readonly IFlowApiRepository _repository;

    public FlowApiController(IFlowApiRepository repository)
    {
        _repository = repository;
    }

    // GET: api/FlowApi
    [HttpGet]
    public async Task<IActionResult> Get()
    {
        var result = await _repository.Select<FlowApi>();
        return Ok(result);
    }
}

我不知道为什么我在测试中没有击中控制器，但可以从邮递员中击中它。

Answer 1

感谢@Ajeet Kumar向我指出了WebApplicationFactory的方向，我采用了the ASP.NET Core Integration Test docs中的方法，并且我合并了修改后的TestFixture类以反映该方法。我还导入了nuget包Microsoft.AspNetCore.Mvc.Testing。我的TestFixture类现在看起来像

protected override void ConfigureWebHost(IWebHostBuilder builder)
{
        builder.ConfigureServices(services =>
        {
            var descriptor = services.SingleOrDefault(d => d.ServiceType == typeof(DbContextOptions<ApiContext>));

            if (descriptor != null)
            {
                services.Remove(descriptor);
            }

            // Add ApplicationDbContext using an in-memory database for testing.
            services.AddDbContext<ApiContext>((options, context) =>
            {
                context.UseInMemoryDatabase("InMemoryDbForTesting");
            });

            services.AddTransient<DatabaseSeeder>();

            // Build the service provider.
            var sp = services.BuildServiceProvider();

            using (var scope = sp.CreateScope())
            {
                var scopedServices = scope.ServiceProvider;
                var db = scopedServices.GetRequiredService<ApiContext>();

                // Ensure the database is created.
                db.Database.EnsureCreated();

                try
                {
                    // Seed the database with test data.
                    var seeder = scopedServices.GetService<DatabaseSeeder>();
                    seeder.SeedFlowApplicationData().Wait();