使用 WebApplicationFactory 运行集成测试会抛出 CancellationTokenSource 已在测试类清理中释放

问题描述 投票：0回答：3

我有一些 Web Api 控制器测试。这些是使用 .NET Core Tests 提供的 WebApplicationFactory 构建的。

  • 当我逐一运行这些控制器测试时，它们都通过了。
  • 当我一次运行这些控制器测试时（在 Visual Studio 中，右键单击测试项目并选择“运行测试”），除了随机的一个之外，所有测试都会失败。

打印屏幕 1：全部成功

打印屏幕 2：全部失败，除了一个：

所有测试都包含一个[理论]传入MemberData来测试各种安全组合。

7)  Project.UserRolesControllerTests.GetUserDetailsById_ReturnsConfiguredResult
  Duration: 1 ms

  Message: 
    [Test Class Cleanup Failure (Project.Controllers.UserRolesControllerTests)]: System.ObjectDisposedException : The CancellationTokenSource has been disposed.
  Stack Trace: 
    CancellationTokenSource.ThrowObjectDisposedException()
    RedisStorage.Dispose()
    Disposer.Dispose(Boolean disposing) line 38
    Disposable.Dispose() line 32
    LifetimeScope.Dispose(Boolean disposing) line 414
    Disposable.Dispose() line 32
    Container.Dispose(Boolean disposing) line 142
    Disposable.Dispose() line 32
    AutofacServiceProvider.Dispose() line 121
    WebHost.Dispose()
    WebApplicationFactory`1.Dispose(Boolean disposing)
    WebApplicationFactory`1.Dispose()

我在 Dotnet Runtime 项目这里发现了一个 Github 问题。但是，我不确定这是同一个问题。另外，我似乎无法解决解决方法。

有人有这方面的经验吗？我现在可以手动运行这些测试，但它也将成为 DevOps 上 CI 管道的一部分。我认为它也会在那里破裂。

提前非常感谢。

编辑：添加使用的代码

public class MyCustomWebApplicationFactory<TStartup>
    : WebApplicationFactory<TStartup> where TStartup : class
{
    private UserConfiguration _userConfiguration;

    public void SetUser(UserConfiguration userConfiguration)
    {
        _userConfiguration = userConfiguration;
    }

    protected override void ConfigureWebHost(IWebHostBuilder builder)
    {
        base.ConfigureWebHost(builder);

        Environment.SetEnvironmentVariable("Statistics:RedisDb", "<conn. string>");

        builder.ConfigureTestServices(services =>
        {
            services.AddMvc(options =>
            {
                options.Filters.Add(new AllowAnonymousFilter()); // Remove entire JWT-requirement for all controllers during test
            });
            services.AddScoped<IJwtService>(instance =>
            {
                var customJwtService = new CustomJwtService(() => _userConfiguration);

                return customJwtService;
            });
            services.AddScoped<IHttpRequestHeaderService>(instance =>
            new CustomHttpRequestHeaderService(() => _userConfiguration));
        });

        builder.UseEnvironment("Test");
    }
}

public class CommunityPostsControllerTests : IClassFixture<MyCustomWebApplicationFactory<CommunityPostsController>>
{
    private MyCustomWebApplicationFactory<CommunityPostsController> _factory;

    public CommunityPostsControllerTests(MyCustomWebApplicationFactory<CommunityPostsController> factory)
    {
        _factory = factory;
    }

    public static IEnumerable<object[]> RoleAccess => new List<object[]>
    {
        new object[] { UserConfigurations.AdminCi1, Ci1EmployeePostInGroup, HttpStatusCode.OK},
        new object[] { UserConfigurations.EmployeeCi1, Ci1ParentPostInGroup, HttpStatusCode.Forbidden},
        // Omitted for readability
    };

    [Theory]
    [MemberData(nameof(RoleAccess))]
    public async Task GetPostById_ReturnsConfiguredResult(UserConfiguration userConfiguration, int communityPostId, HttpStatusCode expectedCode)
    {
        // Arrange
        _factory.SetUser(userConfiguration);
        var client = _factory.CreateClient();

        // Act
        var result = await client.GetAsync($"api/v1/communityposts/{communityPostId}", cancellationToken: CancellationToken.None);

        // Assert
        Assert.Equal(expectedCode, result.StatusCode);
    }
}

编辑：CI 结果

正如预期的那样，Azure DevOps CI 管道也遇到了这个问题。以下是日志/结果：

Microsoft(R) Test Execution Command Line Tool Version 16.7.0
Copyright (c) Microsoft Corporation.All rights reserved.

Starting test execution, please wait...

A total of 1 test files matched the specified pattern.
warn: Microsoft.AspNetCore.DataProtection.KeyManagement.XmlKeyManager[35]
      No XML encryptor configured.Key { 8ad52f98 - 5736 - 4d40 - 85b9 - e758dd2823e4}
may be persisted to storage in unencrypted form.
warn: Microsoft.AspNetCore.DataProtection.KeyManagement.XmlKeyManager[35]
      No XML encryptor configured. Key {fd541f11-452b-4089-afd4-5f8cf81c43af} may be persisted to storage in unencrypted form.
  [xUnit.net 00:00:46.30][Test Class Cleanup Failure(Project.WebApi.IntegrationTests.Controllers.CommunityPostsControllerTests)] System.ObjectDisposedException
X Project.WebApi.IntegrationTests.Controllers.CommunityPostsControllerTests.GetPostById_ReturnsConfiguredResult [1ms]
Error Message:
   [Test Class Cleanup Failure(Project.WebApi.IntegrationTests.Controllers.CommunityPostsControllerTests)]: System.ObjectDisposedException : The CancellationTokenSource has been disposed.
  Stack Trace:
     at System.Threading.CancellationTokenSource.ThrowObjectDisposedException()
   at Hangfire.Pro.Redis.RedisStorage.Dispose()
   at Autofac.Core.Disposer.Dispose(Boolean disposing) in / home / appveyor / projects / autofac / src / Autofac / Core / Disposer.cs:line 38
   at Autofac.Util.Disposable.Dispose() in / home / appveyor / projects / autofac / src / Autofac / Util / Disposable.cs:line 32
   at Autofac.Core.Lifetime.LifetimeScope.Dispose(Boolean disposing) in / home / appveyor / projects / autofac / src / Autofac / Core / Lifetime / LifetimeScope.cs:line 414
   at Autofac.Util.Disposable.Dispose() in / home / appveyor / projects / autofac / src / Autofac / Util / Disposable.cs:line 32
   at Autofac.Core.Container.Dispose(Boolean disposing) in / home / appveyor / projects / autofac / src / Autofac / Core / Container.cs:line 142
   at Autofac.Util.Disposable.Dispose() in / home / appveyor / projects / autofac / src / Autofac / Util / Disposable.cs:line 32
   at Autofac.Extensions.DependencyInjection.AutofacServiceProvider.Dispose() in / home / appveyor / projects / autofac - extensions - dependencyinjection / src / Autofac.Extensions.DependencyInjection / AutofacServiceProvider.cs:line 121
   at Microsoft.AspNetCore.Hosting.Internal.WebHost.Dispose()
   at Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactory`1.Dispose(Boolean disposing)
   at Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactory`1.Dispose()
Results File: /home/vsts/work/_temp/_fv-az6-181_2020-11-02_12_27_22.trx

Test Run Failed.
Total tests: 49
     Passed: 48
     Failed: 1

编辑：包配置

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>netcoreapp2.1</TargetFramework>
    <IsPackable>false</IsPackable>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore.App" />
    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="2.1.3" />
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
    <PackageReference Include="xunit" Version="2.4.1" />
    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
      <PrivateAssets>all</PrivateAssets>
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
    </PackageReference>
    <PackageReference Include="coverlet.collector" Version="1.3.0">
      <PrivateAssets>all</PrivateAssets>
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
    </PackageReference>
  </ItemGroup>
</Project>
c# asp.net-core integration-testing xunit
3个回答
2
投票

IAsyncDisposable
支持于2021年6月9日添加到WebApplicationFactory
。我认为这意味着您可以调用
DisposeAsync()
而不是
Dispose()
，至少对我来说，这似乎解决了问题。

之前：

[ClassCleanup] public static void ClassCleanup() { _webApplicationFactory.Dispose(); } 
之后：


[ClassCleanup]
public static async Task ClassCleanup()
{
    await _webApplicationFactory.DisposeAsync();
}

    



      

      
      
      

      

        

          

            

              
0
投票

              
            

          

        

        
在本例中，我将 
IAsyncLifetime
 接口添加到测试类并实现：


public async Task DisposeAsync(
{
   await _webApplicationFactory.DisposeAsync();   
}

防止错误发生。可以找到一个很好的解释 
xunit 的异步生命周期
    



      

      
      
      

      

        

          

            

              
0
投票

              
            

          

        

        
运行 XUnit 时可能发生这种情况的一个原因是 XUnit 并行运行所有测试（同一类或集合中的测试除外）。 WebApplicationFactory 可能会让这个有点混乱。


解决方案是使用具有相同名称的集合来标记所有测试类。这意味着同一集合中存在的具有该名称的所有测试类不会并行运行。


[Collection("DisableParallelRun")]
public class YourTestClass

来源：
https://xunit.net/docs/running-tests-in-parallel
    



      

      
    

  

  

    
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