C# 当存在多个测试类时，XUnit在Azure DevOps上永远运行，但在本地运行正常

我有一个在本地成功运行的集成测试，但在Azure DevOps上被冻结

[xUnit.net 00:00:00.00] xUnit.net VSTest Adapter v2.4.1 (64-bit .NET Core 4.6.27414.05)
[xUnit.net 00:00:02.04]   Discovering: myapp.IntegrationTests
[xUnit.net 00:00:02.12]   Discovered:  myapp.IntegrationTests
[xUnit.net 00:00:02.13]   Starting:    myapp.IntegrationTests
Passed   myapp.IntegrationTests.class1.case1
[xUnit.net 00:00:04.39]   Finished:    myapp.IntegrationTests
Passed   myapp.IntegrationTests.class1.case2
Results File: D:\a\1\s\TestResults\VssAdministrator_fv-az601_2019-05-02_16_54_26.trx

Total tests: 2. Passed: 2. Failed: 0. Skipped: 0.
Test Run Successful.
Test execution time: 6.4121 Seconds

如果只有一个测试类，它将在Azure DevOps上运行

[xUnit.net 00:00:00.00] xUnit.net VSTest Adapter v2.4.1 (64-bit .NET Core 4.6.27414.05)
[xUnit.net 00:00:02.04]   Discovering: myapp.IntegrationTests
[xUnit.net 00:00:02.12]   Discovered:  myapp.IntegrationTests
[xUnit.net 00:00:02.13]   Starting:    myapp.IntegrationTests
Passed   myapp.IntegrationTests.class1.case1
[xUnit.net 00:00:04.39]   Finished:    myapp.IntegrationTests
Passed   myapp.IntegrationTests.class1.case2
Results File: D:\a\1\s\TestResults\VssAdministrator_fv-az601_2019-05-02_16_54_26.trx

Total tests: 2. Passed: 2. Failed: 0. Skipped: 0.
Test Run Successful.
Test execution time: 6.4121 Seconds

但是，当有多个测试类文件时，它将冻结在下面的最后一行

[xUnit.net 00:00:00.00] xUnit.net VSTest Adapter v2.4.1 (64-bit .NET Core 4.6.27414.05)
[xUnit.net 00:00:02.72]   Discovering: myapp.IntegrationTests
[xUnit.net 00:00:02.78]   Discovered:  myapp.IntegrationTests
[xUnit.net 00:00:02.79]   Starting:    myapp.IntegrationTests

以下是一些信息： 在VS 2017中本地运行，如下所示。请注意，4.6.27110.04有所不同

[02/05/2019 17:28:48 Informational] [xUnit.net 00:00:00.00] xUnit.net VSTest Adapter v2.4.1 (64-bit .NET Core **4.6.27110.04**)

该项目是.NETCore2.2

下面是集成测试程序集的日志

##[section]Starting: Integration Test Assemblies
==============================================================================
Task         : Visual Studio Test
Description  : Run unit and functional tests (Selenium, Appium, Coded UI test, etc.) using the Visual Studio Test (VsTest) runner. Test frameworks that have a Visual Studio test adapter such as MsTest, xUnit, NUnit, Chutzpah (for JavaScript tests using QUnit, Mocha and Jasmine), etc. can be run. Tests can be distributed on multiple agents using this task (version 2).
Version      : 2.150.9
Author       : Microsoft Corporation
Help         : [More information](https://go.microsoft.com/fwlink/?LinkId=835764)
==============================================================================
SystemVssConnection exists true
SystemVssConnection exists true
SystemVssConnection exists true
Running tests using vstest.console.exe runner.
======================================================
Test selector : Test assemblies
Test filter criteria : null
Search folder : D:\a\1\s
VisualStudio version selected for test execution : latest
Attempting to find vstest.console from a visual studio installation.
Attempting to find vstest.console from a visual studio build tools installation.
Attempting to find vstest.console from a visual studio installation.
Run in parallel : false
Run in isolation : false
Path to custom adapters : null
Other console options : null
Code coverage enabled : false
Diagnostics enabled : true
SystemVssConnection exists true
Run the tests locally using vstest.console.exe
========================================================
Test selector : Test assemblies
Test assemblies : **\*.IntegrationTests.dll,!**\obj\**
Test filter criteria : null
Search folder : D:\a\1\s
Run settings file : D:\a\1\s
Run in parallel : false
Run in isolation : false
Path to custom adapters : null
Other console options : null
Code coverage enabled : false
Diagnostics enabled : false
Rerun failed tests: false
VisualStudio version selected for test execution : latest
Attempting to find vstest.console from a visual studio installation.
Attempting to find vstest.console from a visual studio build tools installation.
Attempting to find vstest.console from a visual studio installation.
========================================================
======================================================
[command]"C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\IDE\CommonExtensions\Microsoft\TestWindow\vstest.console.exe" @D:\a\_temp\89a681e1-6cfc-11e9-a74f-a3bedc500b32.txt
Microsoft (R) Test Execution Command Line Tool Version 15.9.1
Copyright (c) Microsoft Corporation.  All rights reserved.

vstest.console.exe 
"D:\a\1\s\src\myapp.IntegrationTests\bin\Release\netcoreapp2.2\myapp.IntegrationTests.dll"
/logger:"trx"
/TestAdapterPath:"D:\a\1\s"
Starting test execution, please wait...
[xUnit.net 00:00:00.00] xUnit.net VSTest Adapter v2.4.1 (64-bit .NET Core 4.6.27414.05)
[xUnit.net 00:00:01.97]   Discovering: myapp.IntegrationTests
[xUnit.net 00:00:02.03]   Discovered:  myapp.IntegrationTests
[xUnit.net 00:00:02.04]   Starting:    myapp.IntegrationTests
[xUnit.net 00:00:06.47]   Finished:    myapp.IntegrationTests
Passed   myapp.IntegrationTests.class2.case1
Results File: D:\a\1\s\TestResults\VssAdministrator_fv-az606_2019-05-02_17_06_04.trx

Total tests: 1. Passed: 1. Failed: 0. Skipped: 0.
Test Run Successful.
Test execution time: 8.5422 Seconds
##[section]Async Command Start: Publish test results
Publishing test results to test run '1019422'
Test results remaining: 1. Test run id: 1019422
Published Test Run : https://dev.azure.com/mydomain/_TestManagement/Runs#runId=1019422&_a=runCharts
##[section]Async Command End: Publish test results
##[section]Finishing: Integration Test Assemblies

项目参考资料如下

<ItemGroup>
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.0.1" />
    <PackageReference Include="Moq" Version="4.10.1" />
    <PackageReference Include="xunit" Version="2.4.1" />
    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1">
      <PrivateAssets>all</PrivateAssets>
      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
    </PackageReference>
  </ItemGroup>

我需要在基类中为上面的所有子类运行安装程序，但我认为这可能会导致问题

如果是问题，如何避免并改进代码？

我将其设置为下面的值

"parallelizeTestCollections": false

或者通过

Collection

属性将其设置为按顺序运行

"parallelizeTestCollections": false

---

或者通过

集合将其设置为按顺序运行

属性

尝试使用

系统运行管道。debug

=true，可能有助于发现问题。您是说，在为生成排队时system.debug=true吗？如果是这样，它仍然不起作用。是的，它不应该解决问题，只是可能会给你更多的细节，也许你可以了解问题发生的原因。请参阅我在OP上的更新。尝试使用

系统运行管道。debug

=true，可能会帮助找到问题。你是说在为生成排队时system.debug=true吗？如果是这样，它仍然不起作用。是的，它不应该解决问题，只是可能会给你更多的细节，也许你可以了解问题发生的原因。请参阅我在OP上的更新。