Specflow - GenerateFeatureFileCodeBehindTask 意外失败

Question

我对 SpecFlow 有问题。我们正在使用 Azure Devops，当我在本地机器上构建解决方案时，它运行良好，但在 Azure Devops 构建期间，我收到以下错误：

[error]C:\Windows\ServiceProfiles\NetworkService\.nuget\packages\specflow.tools.msbuild.generation\3.1.86\build\SpecFlow.Tools.MsBuild.Generation.targets(93,5): Error MSB4018: The "GenerateFeatureFileCodeBehindTask" task failed unexpectedly.
System.IO.FileNotFoundException: Could not load file or assembly 'TechTalk.SpecFlow, Version=3.1.0.0, Culture=neutral, PublicKeyToken=0778194805d6db41'. The system cannot find the file specified.
File name: 'TechTalk.SpecFlow, Version=3.1.0.0, Culture=neutral, PublicKeyToken=0778194805d6db41'
   at System.ModuleHandle.ResolveTypeHandleInternal(RuntimeModule module, Int32 typeToken, RuntimeTypeHandle[] typeInstantiationContext, RuntimeTypeHandle[] methodInstantiationContext)
   at System.Reflection.RuntimeModule.ResolveType(Int32 metadataToken, Type[] genericTypeArguments, Type[] genericMethodArguments)
   at System.Reflection.CustomAttribute.FilterCustomAttributeRecord(MetadataToken caCtorToken, MetadataImport& scope, RuntimeModule decoratedModule, MetadataToken decoratedToken, RuntimeType attributeFilterType, Boolean mustBeInheritable, ListBuilder`1& derivedAttributes, RuntimeType& attributeType, IRuntimeMethodInfo& ctor, Boolean& ctorHasParameters, Boolean& isVarArg)
   at System.Reflection.CustomAttribute.AddCustomAttributes(ListBuilder`1& attributes, RuntimeModule decoratedModule, Int32 decoratedMetadataToken, RuntimeType attributeFilterType, Boolean mustBeInheritable, ListBuilder`1 derivedAttributes)
   at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType)
   at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeAssembly assembly, RuntimeType caType)
   at System.Reflection.RuntimeAssembly.GetCustomAttributes(Type attributeType, Boolean inherit)
   at System.Attribute.GetCustomAttributes(Assembly element, Type attributeType, Boolean inherit)
   at System.Attribute.GetCustomAttribute(Assembly element, Type attributeType, Boolean inherit)
   at System.Attribute.GetCustomAttribute(Assembly element, Type attributeType)
   at TechTalk.SpecFlow.Generator.Plugins.GeneratorPluginLoader.LoadPlugin(PluginDescriptor pluginDescriptor)
   at TechTalk.SpecFlow.Generator.GeneratorContainerBuilder.LoadPlugins(ObjectContainer container, GeneratorPluginEvents generatorPluginEvents, UnitTestProviderConfiguration unitTestProviderConfiguration, IEnumerable`1 generatorPlugins)
   at TechTalk.SpecFlow.Generator.GeneratorContainerBuilder.CreateContainer(SpecFlowConfigurationHolder configurationHolder, ProjectSettings projectSettings, IEnumerable`1 generatorPluginInfos, IObjectContainer parentObjectContainer)
   at SpecFlow.Tools.MsBuild.Generation.WrappedGeneratorContainerBuilder.BuildGeneratorContainer(SpecFlowConfigurationHolder specFlowConfigurationHolder, ProjectSettings projectSettings, IReadOnlyCollection`1 generatorPluginInfos, IObjectContainer rootObjectContainer)
   at SpecFlow.Tools.MsBuild.Generation.GenerateFeatureFileCodeBehindTaskExecutor.Execute()
   at SpecFlow.Tools.MsBuild.Generation.GenerateFeatureFileCodeBehindTask.Execute()
   at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
   at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(ITaskExecutionHost taskExecutionHost, TaskLoggingContext taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask)

        <PackageReference Include="FluentAssertions" Version="5.10.2" />
        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
        <PackageReference Include="MSTest.TestAdapter" Version="2.1.0" />
        <PackageReference Include="MSTest.TestFramework" Version="2.1.0" />
        <PackageReference Include="NUnit" Version="3.12.0" />
        <PackageReference Include="Selenium.Support" Version="3.141.0" />
        <PackageReference Include="Selenium.WebDriver" Version="3.141.0" />
        <PackageReference Include="SpecFlow" Version="3.1.86" />
        <PackageReference Include="SpecFlow.MsTest" Version="3.1.86" />
        <PackageReference Include="SpecFlow.Tools.MsBuild.Generation" Version="3.1.86" />

我一直在使用它与尝试nUnit，MsTest，xUnit并送花儿给人失败。目标框架：.NET Core 3.1。构建代理：vs2019-win2019

Answer 1

我们遇到了同样的问题，经过更长时间的挖掘，我发现在他们的 git repo https://github.com/SpecFlowOSS/SpecFlow/issues/1912 中为此创建了一个问题。引用 git 问题：

MSBuild 16.5 为可能有副作用的任务提供了一种新的程序集加载方法。（多年来一直在问，但在加载依赖项时它的行为有点不同）您可以尝试设置 MSBUILDSINGLELOADCONTEXT=1 (env var) 以获得旧的行为。

尝试在您的构建管道中将其设置为：

 variables:
    ...
    MSBUILDSINGLELOADCONTEXT: '1'
    ...

这对我们的案例有帮助。

编辑：这个问题似乎在较新版本的 SpecFlow (3.3.15+) 中得到解决。

Answer 2

从 SpecFlow 2 迁移后，SpecFlow 3.4.8 也出现同样的问题。

\n

自从After version SpecFlow 3.3.30 don\xe2\x80\x99t need to add the SpecFlow.Tools.MSBuild.Generation package anymore

\n

所以我已经删除了SpecFlow.Tools.MSBuild.Generation软件包，但问题仍然存在。

\n

之后我添加specflow.json到测试项目并且问题消失了

\n

Answer 3

错误消息显示：

无法加载文件或程序集“TechTalk.SpecFlow，版本=3.1.0.0，文化=中性，PublicKeyToken=0778194805d6db41”。该系统找不到指定的文件。文件名：'TechTalk.SpecFlow，版本=3.1.0.0

您已安装 SpecFlow v3.1.86。我希望它加载 TechTalk.SpecFlow 3.1.86，它与 NuGet 包版本匹配。

任何一个：

• 使用程序包管理器控制台卸载并重新安装 SpecFlow 程序包：

  uninstall-package SpecFlow -force -project NameOfYourTestProject
  install-package SpecFlow -version 3.1.86 -project NameOfYourTestProject
  

• 编辑测试项目的 .csproj 文件，并确保<Reference>导入 DLL 文件的元素指向正确的文件

  <Reference Include="TechTalk.SpecFlow, Version=3.0.0.0, Culture=neutral, PublicKeyToken=..., processorArchitecture=MSIL">
    <HintPath>..\packages\SpecFlow.3.1.86\lib\FRAMEWORK_VERSION\TechTalk.SpecFlow.dll</HintPath>
  </Reference>
  

  注意：FRAMEWORK_VERSION根据测试项目的 .NET Framework 版本替换为 net45、netstandard2.0 等。

您始终可以打开 Windows 文件资源管理器并浏览到 DLL 文件以找到正确的路径。

最后努力，尝试从命令行手动恢复 NuGet 包，假设您的系统中有 NuGet.exe 可用%PATH%（有关更多信息，请参阅https://learn.microsoft.com/en-us/nuget/install-nuget-client-tools信息）

nuget restore Path/To/YourSolution.sln