Microsoft Moles Directory Exists throws MoleNotInstrumentedE

本文关键字：throws MoleNotInstrumentedE Exists Directory Moles Microsoft | 更新日期: 2023-09-27 18:25:59

我在Visual Studio Ultimate 2010中使用Microsoft Moles，并试图对Directory.Exists方法进行摩尔操作。我的程序集中有mscorlib.moles文件和以下头行，但在尝试运行单元测试时，我仍然会收到MoleNotInstrumentedException。我以前使用过Microsoft Fakes，但我正在进行的项目让我们使用VS2010，所以我不得不使用Moles。我已经将local.testsettings文件中的主机类型更改为Moles。有人知道为什么单元测试可能会抛出错误或出现问题吗？

using System.IO;
using System.IO.Moles;
using Microsoft.Moles.Framework;
using Microsoft.VisualStudio.TestTools.UnitTesting;
[assembly: MoledAssembly("System.IO")]
[assembly: MoledType(typeof(System.IO.Directory))]

正在测试的失败的简化方法。

private bool GetDirectoryExists(string directoryPath)
{
    return Directory.Exists(directoryPath);
}

试验方法。

[TestMethod, TestCategory("Developer"), HostType("Moles")]
public void Test_MolesDirectoryExists()
{
    string shouldBeValue = @"C:'Hello'Nope'Not Here";
    string returnedValue = null;
    using (MolesContext.Create())
    {
        MDirectory.ExistsString = s =>
        {
            Trace.WriteLine("Passed in value: " + s);
            returnedValue = s;
            return true;
        };
        bool result = this.GetDirectoryExists(shouldBeValue);
        Trace.WriteLine("DirectoryExists: " + result);
        Assert.IsTrue(result, "Directory does not exist.");
        Assert.AreEqual(shouldBeValue, returnedValue, "Path values do not match");
    }
}

异常错误消息

Test method TempUsersService.Tests.TempUsersTests.Test_ShimDirectoryExists threw exception: 
Microsoft.Moles.Framework.Moles.MoleNotInstrumentedException: The System.Boolean
System.IO.Directory.Exists(System.String path) was not instrumented
To resolve this issue, add the following attribute in the test project:
using Microsoft.Moles.Framework;
[assembly: MoledType(typeof(System.IO.Directory))]

异常堆栈跟踪

Microsoft.ExtendedReflection.Monitoring._Detours.InvokeEvent[T](T value, SafeAction`1 eh)
Microsoft.ExtendedReflection.Monitoring._Detours.OnAttachedUninstrumentedMethod(Method method)
Microsoft.ExtendedReflection.Monitoring._Detours.CheckInstrumentation(Method method)
Microsoft.ExtendedReflection.Monitoring._Detours.AttachDetour(Object _receiver, Method method, Delegate detourDelegate)
Microsoft.Moles.Framework.Moles.MoleRuntime.SetMoleMethod(Delegate _stub, Object _receiver, Method method)
Microsoft.Moles.Framework.Moles.MoleRuntime.SetMole(Delegate _stub, Type receiverType, Object _receiver, String name, MoleBindingFlags flags, Type[] parameterTypes)
Microsoft.Moles.Framework.Moles.MoleRuntime.SetMolePublicStatic(Delegate _stub, Type receiverType, String name, Type[] parameterTypes)
System.IO.Moles.MDirectory.set_ExistsString(Func`2 value) in c:'Users'abc123'Desktop'workspace'Project'Tests'TempUsersService.Tests'obj'x86'Debug'Moles'm'm.g.cs: line 0
TempUsersService.Tests.TempUsersTests.Test_ShimDirectoryExists() in C:'Users'abc123'Desktop'workspace'Project'Tests'TempUsersService.Tests'TempUsersTests.cs: line 401

Microsoft Moles Directory Exists throws MoleNotInstrumentedE

问题是的线路

[assembly: MoledType(typeof(System.IO.Directory))]

位于命名空间内。这导致编译器无法看到该行，因此引发了MoleNotInstrumentedException。解决方案是将这一行移到命名空间之外。一旦我这样做了，所有使用Moles主机的单元测试都开始正常工作。

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