为什么在单元测试时会看到moduleloadexceptionhandlerException异常

我们有一个混合模式程序集,包含VC++(使用MFC)和C++/CLI类。它是一个mfc扩展dll,在运行时加载到我们的mfc可执行文件中,一切正常。

当我们从另一个C++/CLI程序集对单元中的非托管类进行单元测试时,每当我们试图创建一个非托管类的实例(通过new)时,会看到以下异常:

Exception
System.TypeInitializationException: The type initializer for '<Module>' threw an exception. ---> <CrtImplementationDetails>.ModuleLoadExceptionHandlerException: A nested exception occurred after the primary exception that caused the C++ module to fail to load.
 ---> System.Runtime.Serialization.SerializationException: Serialization error.
   at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo)
   at <CrtImplementationDetails>.DoCallBackInDefaultDomain(IntPtr function, Void* cookie)
   at <CrtImplementationDetails>.DoCallBackInDefaultDomain(IntPtr , Void* )
   at <CrtImplementationDetails>.LanguageSupport.InitializeDefaultAppDomain(LanguageSupport* ) in f:\dd\vctools\crt_bld\self_x86\crt\src\mstartup.cpp:line 518
   at <CrtImplementationDetails>.LanguageSupport._Initialize(LanguageSupport* ) in f:\dd\vctools\crt_bld\self_x86\crt\src\mstartup.cpp:line 721
   at <CrtImplementationDetails>.LanguageSupport.Initialize(LanguageSupport* ) in f:\dd\vctools\crt_bld\self_x86\crt\src\mstartup.cpp:line 875
   --- End of inner exception stack trace ---
   at <CrtImplementationDetails>.ThrowNestedModuleLoadException(Exception innerException, Exception nestedException)
   at <CrtImplementationDetails>.ThrowNestedModuleLoadException(Exception , Exception )
   at <CrtImplementationDetails>.LanguageSupport.Cleanup(LanguageSupport* , Exception innerException) in f:\dd\vctools\crt_bld\self_x86\crt\src\mstartup.cpp:line 841
   at <CrtImplementationDetails>.LanguageSupport.Initialize(LanguageSupport* ) in f:\dd\vctools\crt_bld\self_x86\crt\src\mstartup.cpp:line 883
   at .cctor() in f:\dd\vctools\crt_bld\self_x86\crt\src\mstartup.cpp:line 922
   --- End of inner exception stack trace ---
   at MSMContactDataTests.LoadUnknownItemTest()

这看起来像是测试运行器加载程序集失败(在本例中为gallio.echo)。

我还创建了一个小的C++控制台应用程序,并尝试了同样的东西。我可以正确地创建包含在程序集中的ref类的实例,但是当我尝试创建一个未排序的类时,我得到了相同的异常。

有什么想法吗?

编辑

我本来要发布的控制台应用程序代码,打破了这里,但我已经重新编译了它,现在它的工作!这里是:

#include "stdafx.h"

using namespace System;

#include "SCacheAssignment.h"

int main(array<System::String ^> ^args)
{
    Console::WriteLine(L"Hello World");
    SCacheAssignment* assignment = new SCacheAssignment(NULL, false);
    assignment->id = 2;
    Console::WriteLine(L"Hello World 2 " + assignment->id);
    return 0;
}

当我使用他的代码进行单元测试时:

#include "stdafx.h"

#include "PBSMSDataStoreUnitTests2.h"
#include "SCacheAssignment.h"

using namespace PBSMSDataStoreUnitTests2;

void Class1::SomeTest()
{
    Console::WriteLine(L"Hello World");
    SCacheAssignment* assignment = new SCacheAssignment(NULL, false);
    assignment->id = 2;
    Console::WriteLine(L"Hello World 2 " + assignment->id);
}

它坏了。这是测试程序集中的唯一测试。

控制台应用程序是CLR控制台应用程序,其中的测试程序集位于CLR类库中。据我所知,它们使用相同的编译器选项。为什么一个管用一个不管用?