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我在 Visual Studio 2013 中有一个 CodedUI 测试项目。按照说明将 SpecFlow 与 CodedUI API 集成后，我在FeatureSetup（Assembly binding logging was enabled）中收到以下错误

测试名称：TheWelcomeScreen

测试全名：(...)Feature.TheWelcomeScreen

测试来源：c:\path\to\My.feature：第 6 行

测试结果：失败

测试时间：0:00:00

结果消息：类初始化方法 (...)Feature.FeatureSetup 引发异常。System.IO.FileNotFoundException：System.IO.FileNotFoundException：无法加载文件或程序集“SpecFlow.Assist.Dynamic，版本=1.0.2.0，文化=中性”或其依赖项之一。该系统找不到指定的文件。

=== Pre-bind state information ===

LOG: DisplayName = SpecFlow.Assist.Dynamic, Version=1.0.2.0, Culture=neutral
(Partial)
WRN: Partial binding information was supplied for an assembly:
WRN: Assembly Name: SpecFlow.Assist.Dynamic, Version=1.0.2.0, Culture=neutral | Domain ID: 2
WRN: A partial bind occurs when only part of the assembly display name is provided.
WRN: This might result in the binder loading an incorrect assembly.
WRN: It is recommended to provide a fully specified textual identity for the assembly,
WRN: that consists of the simple name, version, culture, and public key token.
WRN: See whitepaper http://go.microsoft.com/fwlink/?LinkId=109270 for more information and common solutions to this issue.
LOG: Appbase = file:///C:/Path/To/Current/TestResults/Directory/Out
LOG: Initial PrivatePath = NULLCalling assembly : TechTalk.SpecFlow, Version=1.9.0.77, Culture=neutral, PublicKeyToken=0778194805d6db41.
===
LOG: This bind starts in default load context.
LOG: Using application configuration file: C:\Path\To\Current\TestResults\Directory\Out\BWE.Tests.DLL.config
LOG: Using host configuration file: 
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config.
LOG: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind).
LOG: Attempting download of new URL file:///C:/Path/To/Current/TestResults/Directory/Out/SpecFlow.Assist.Dynamic.DLL.
LOG: Attempting download of new URL file:///C:/Path/To/Current/TestResults/Directory/Out/SpecFlow.Assist.Dynamic/SpecFlow.Assist.Dynamic.DLL.
LOG: Attempting download of new URL file:///C:/Path/To/Current/TestResults/Directory/Out/SpecFlow.Assist.Dynamic.EXE.
LOG: Attempting download of new URL file:///C:/Path/To/Current/TestResults/Directory/Out/SpecFlow.Assist.Dynamic/SpecFlow.Assist.Dynamic.EXE.

结果堆栈跟踪：

at System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
at System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
at System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
at System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean forIntrospection)
at System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection)
at System.Reflection.Assembly.Load(String assemblyString)
at TechTalk.SpecFlow.Infrastructure.BindingAssemblyLoader.Load(String assemblyName)
at System.Linq.Enumerable.WhereSelectListIterator`2.MoveNext()
at System.Collections.Generic.List`1.InsertRange(Int32 index, IEnumerable`1 collection)
at TechTalk.SpecFlow.Infrastructure.TestRunnerFactory.Create(Assembly testAssembly)
at TechTalk.SpecFlow.TestRunnerManager.CreateTestRunner(TestRunnerKey key)
at TechTalk.SpecFlow.TestRunnerManager.GetTestRunner(TestRunnerKey key)
at TechTalk.SpecFlow.TestRunnerManager.GetTestRunner(Assembly testAssembly, Boolean async)
at TechTalk.SpecFlow.TestRunnerManager.GetTestRunner()
at (...)Feature.FeatureSetup(TestContext testContext) in c:\path\to\My.feature.cs:line 0

我packages.config的这个解决方案的文件：

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="AutoMapper" version="3.3.0" targetFramework="net40" />
  <package id="CompareNETObjects" version="3.01.0.0" targetFramework="net40" />
  <package id="ImpromptuInterface" version="6.2.2" targetFramework="net40" />
  <package id="SpecFlow" version="1.9.0" targetFramework="net40" />
  <package id="SpecFlow.Assist.Dynamic" version="1.0.2" targetFramework="net40" />
</packages>

在 SpecFlow.Assist.Dynamic DLL 的“属性”中，该CopyLocal设置设置为true. 构建解决方案后，该bin\Debug文件夹SpecFlow.Assist.Dynamic.dll在其中，但该文件夹中当前测试运行的TestResults文件夹不包含此 DLL。它确实包含以下 DLL：

  • 我的项目的 DLL
  • AutoMapper.dll
  • KellermanSoftware.Compare-Net-Objects.dll
  • TechTalk.SpecFlow.dll

我已经打开并关闭了 Visual Studio，卸载并重新安装了 NuGet 包，在本地删除了包源，清理、重建、重新启动、手动删除了bin\Debug文件夹并重新构建了......列表还在继续。我仍然遇到同样的异常。

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1 回答 1

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我不知道它是否是设计使然，但 MSTest 不会将程序集部署到测试文件夹，除非该程序集中的至少一种类型用于测试或被测代码。因此，如果您通过反射实例化类型和汇编，那么您将遇到问题。

这个问题已经被其他人注意到了。

简单的解决方案是做以下两件事之一：

  • 在测试中使用相关程序集中的虚拟类型。做一个redendantvar dummy = new TheType()
  • 使用部署项复制 dll。我认为这不太好，因为除非您正在运行包含部署项的测试，否则您可能无法部署它，这可能意味着您需要多次使用该属性，尽管我对此不是 100% 确定。
于 2015-08-03T16:10:08.833 回答