MSTest v2 不能与 net5.0-windows 一起运行答案

【问题标题】：MSTest v2 won't run with net5.0-windowsMSTest v2 不能与 net5.0-windows 一起运行
【发布时间】：2021-10-05 13:02:43
【问题描述】：

我正在尝试创建一个 MSTest 项目，用于对我们的 WinUI 3 开发进行单元测试。当面向 .NET 5.0 时，我能够通过测试资源管理器运行测试。

Project Reunion 需要 net5.0-windows10.0.19041 作为目标框架。当我尝试运行针对 net5.0-windows10.0.19041 的测试时，项目构建但测试不运行。下面的测试日志输出显示未找到 WinUI3-UnitTests.dll 文件，但 WinUI3-UnitTests.dll 确实存在于指定位置。

[2021-10-05 9:38:57.350 AM] [MSTest][Discovery][WinUI3-Demo\WinUI3-UnitTests\bin\Debug\net5.0-windows10.0.19041\WinUI3-UnitTests.dll] Failed to discover tests from assembly WinUI3-Demo\WinUI3-UnitTests\bin\Debug\net5.0-windows10.0.19041\WinUI3-UnitTests.dll. Reason:File does not exist: WinUI3-Demo\WinUI3-UnitTests\bin\Debug\net5.0-windows10.0.19041\WinUI3-UnitTests.dll

在 MSTest 输出日志中，它会引发 System.InvalidOperation 异常

TpTrace Information: 0 : 4580, 4, 2021/10/01, 16:05:24.725, 12341249999384, testhost.x86.dll, AssemblyResolver.OnResolve: Resolved assembly: Microsoft.VisualStudio.TestPlatform.MSTestAdapter.PlatformServices, from path: \WinUI3-Demo\WinUI3-UnitTests\bin\Debug\net5.0-windows10.0.19041\Microsoft.VisualStudio.TestPlatform.MSTestAdapter.PlatformServices.dll
TpTrace Information: 0 : 4580, 4, 2021/10/01, 16:05:24.725, 12341250002103, testhost.x86.dll, MSTestExecutor.RunTests: Running tests from sources.
TpTrace Information: 0 : 4580, 4, 2021/10/01, 16:05:24.728, 12341250024421, testhost.x86.dll, CollectSourceInformation value Found : False 
TpTrace Error: 0 : 4580, 4, 2021/10/01, 16:05:24.773, 12341250480636, testhost.x86.dll, Exception of type 'System.InvalidOperationException' was thrown.
TpTrace Information: 0 : 4580, 4, 2021/10/01, 16:05:24.774, 12341250491724, testhost.x86.dll, AssemblyResolver.OnResolve: Microsoft.VisualStudio.TestPlatform.MSTest.TestAdapter.resources: Resolving assembly.
TpTrace Information: 0 : 4580, 4, 2021/10/01, 16:05:24.774, 12341250492593, testhost.x86.dll, AssemblyResolver.OnResolve: Microsoft.VisualStudio.TestPlatform.MSTest.TestAdapter.resources: Searching in: 'WinUI3-Demo\WinUI3-UnitTests\bin\Debug\net5.0-windows10.0.19041'.
TpTrace Information: 0 : 4580, 4, 2021/10/01, 16:05:24.774, 12341250493693, testhost.x86.dll, AssemblyResolver.OnResolve: Microsoft.VisualStudio.TestPlatform.MSTest.TestAdapter.resources: Assembly path does not exist: 'WinUI3-Demo\WinUI3-UnitTests\bin\Debug\net5.0-windows10.0.19041\Microsoft.VisualStudio.TestPlatform.MSTest.TestAdapter.resources.dll', returning.
TpTrace Information: 0 : 4580, 4, 2021/10/01, 16:05:24.775, 12341250494624, testhost.x86.dll, AssemblyResolver.OnResolve: Microsoft.VisualStudio.TestPlatform.MSTest.TestAdapter.resources: Assembly path does not exist: 'WinUI3-Demo\WinUI3-UnitTests\bin\Debug\net5.0-windows10.0.19041\Microsoft.VisualStudio.TestPlatform.MSTest.TestAdapter.resources.exe', returning.
TpTrace Information: 0 : 4580, 4, 2021/10/01, 16:05:24.775, 12341250495194, testhost.x86.dll, AssemblyResolver.OnResolve: Microsoft.VisualStudio.TestPlatform.MSTest.TestAdapter.resources: Failed to load assembly.

我的 Nuget 包供参考

    <PackageReference Include="Microsoft.Graphics.Win2D" Version="1.0.0.26-experimental1" />
    <PackageReference Include="Microsoft.ProjectReunion" Version="0.8.4" />
    <PackageReference Include="Microsoft.ProjectReunion.Foundation" Version="0.8.4" />
    <PackageReference Include="Vortice.WinUI" Version="2.0.20-beta" />
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />
    <PackageReference Include="MSTest.TestAdapter" Version="2.2.7" />
    <PackageReference Include="MSTest.TestFramework" Version="2.2.7" />

【问题讨论】：

标签： c# visual-studio mstest .net-5 winui-3

【解决方案1】：

通过将 MSTest.TestAdapter 和 MSTest.TestFramework 恢复到版本 2.2.3 解决。

【讨论】：

看来你的问题已经解决了，请考虑accepting it。
我对 net6.0-windows10.0.19041 而不是 net5.0-windows10.0.19041 有同样的问题。降级版本也“解决了”我的问题。