为集成测试设定WebApplicationFactory种子不会保存，并给出一个404

Question

因此，我尝试在dbcontext中使用预先设定的数据创建一个集成测试，但是由于某种原因，它没有将我的条目保存到数据库中，并且在我得到响应后返回了404 not found。如果需要，乐于扩展或澄清任何事情。

干杯

[Fact]
public async Task GetPet_ReturnsResourceWithAccurateFields()
{
    var fakePet = new FakePet { }.Generate();
    fakePet.PetId = 1;

    var appFactory = new WebApplicationFactory<StartupAutomatedTesting>()
        .WithWebHostBuilder(builder =>
        {
            builder
                .ConfigureServices(services =>
                {
                    services.Remove(new ServiceDescriptor(typeof(MyDbContext),
                        typeof(MyDbContext)));
                    services.AddDbContext<MyDbContext>(options =>
                    {
                        options.UseInMemoryDatabase("TestDb");
                    });

                    var serviceProvider = services
                        .AddEntityFrameworkInMemoryDatabase()
                        .BuildServiceProvider();

                    using (var scope = serviceProvider.CreateScope())
                    {
                        var context = scope.ServiceProvider.GetRequiredService<MyDbContext>();
                        context.Database.EnsureCreated();

                        context.Pets.AddRange(fakePet);
                        context.SaveChanges();
                    }
                });
        });

    var testingClient = appFactory.CreateClient();


    var result = await testingClient.GetAsync($"/v1/Pets/{fakePet.PetId}");
    var responseContent = await result.Content.ReadAsStringAsync();
    var response = JsonConvert.DeserializeObject<PetDto>(responseContent);

    // Assert
    response.Name.Should().Be(fakePet.Name);
    response.Age.Should().Be(fakePet.Age);
}

Answer 1

可能是因为您创建的(中间)服务提供者获得了它自己的内存数据库的单例实例。

在创建appFactory之后移动种子部分，并从appFactory解析来自服务提供商的dbcontext

var appFactory = new WebApplicationFactory<StartupAutomatedTesting>()
   .WithWebHostBuilder(builder =>
   {
       ... etc ...
   });

using (var scope = appFactory.Services.CreateScope())
{
    var context = scope.ServiceProvider.GetRequiredService<MyDbContext>();
    context.Database.EnsureCreated();

    context.Pets.AddRange(fakePet);
    context.SaveChanges();
}

var testingClient = appFactory.CreateClient();

... etc ...