迁移至.NET Core 7后Visual Studio中MSTest测试发现失败：TestRunDirectoryLabel缺失

问题背景 #

近期将C#项目从.NET Framework 4.8迁移至.NET Core 7后，MSTest无法发现任何单元测试。切换回旧框架分支时测试显示正常，且几周前新分支还能正常运行测试，代码库未做相关变更。其他开发者可正常运行测试，因此判定为机器特定问题。

错误信息 #

测试发现阶段的报错如下：

Building Test Projects
Starting test discovery for requested test run
========== Starting test discovery ==========
[MSTest][Discovery][C:\sln\project\bin\Debug\project.dll] Failed to discover tests from assembly C:\sln\project\bin\Debug\project.dll. Reason:Field not found: 'Microsoft.VisualStudio.TestTools.UnitTesting.TestContext.TestRunDirectoryLabel'.
No test is available in C:\sln\project\bin\Debug\project.dll. Make sure that test discoverer & executors are registered and platform & framework version settings are appropriate and try again.
========== Test discovery finished: 0 Tests found in 993.5 ms ==========

相关.runsettings文件 #

项目使用的.runsettings配置如下：

<?xml version="1.0" encoding="utf-8"?>
<RunSettings>
    <!-- Configurations that affect the Test Framework -->
    <RunConfiguration>
        <!-- Path relative to solution directory -->
        <ResultsDirectory>\.\TestResults</ResultsDirectory>

        <!-- [x86] | x64  
      - You can also change it from menu Test, Test Settings, Default Processor Architecture -->
        <TargetPlatform>x64</TargetPlatform>

        <!-- Framework35 | [Framework40] | Framework45 -->
        <!--<TargetFrameworkVersion>Framework40</TargetFrameworkVersion>-->
    </RunConfiguration>

    <!-- Configurations for data collectors -->
    <DataCollectionRunSettings>
        <DataCollectors>
            <DataCollector friendlyName="Code Coverage" uri="datacollector://Microsoft/CodeCoverage/2.0" assemblyQualifiedName="Microsoft.VisualStudio.Coverage.DynamicCoverageDataCollector, Microsoft.VisualStudio.TraceCollector, Version=11.0.0.0, Culture=neutral, PublicKeyToken="[redacted]">
                <Configuration>
                    <CodeCoverage>
                        <ModulePaths>
                            <Exclude>
                                <ModulePath>.*CPPUnitTestFramework.*</ModulePath>
                            </Exclude>
                        </ModulePaths>
                    </CodeCoverage>
                </Configuration>
            </DataCollector>

        </DataCollectors>
    </DataCollectionRunSettings>

    <!-- Adapter Specific sections -->

    <!-- MSTest adapter -->
    <MSTest>
        <!-- required for app.config (which has gcverylargeobjects) to run -->
        <!--<ForcedLegacyMode>true</ForcedLegacyMode>-->
        <MapInconclusiveToFailed>True</MapInconclusiveToFailed>
        <CaptureTraceOutput>false</CaptureTraceOutput>
        <DeleteDeploymentDirectoryAfterTestRunIsComplete>false</DeleteDeploymentDirectoryAfterTestRunIsComplete>
        <DeploymentEnabled>true</DeploymentEnabled>
    </MSTest>

</RunSettings>

已尝试的解决方式 #

• 删除.vs、bin、obj目录后重新构建项目
• 安装所有MSTest相关的NuGet包
• 修改.runsettings文件的各项配置
• 更新.NET Core 7和.NET Framework 4.8到最新版本
• 使用dotnet test命令通过CLI运行测试

以上方法均未解决问题，请问该如何修复？

内容的提问来源于stack exchange，提问作者Brambo