如何诊断Resharper单元测试运行程序“无法加载一种或多种请求的类型”，错误 [英] How to diagnose Resharper Unit Test Runner "Unable to load one or more of the requested types" error

问题描述

当我使用Resharper单元测试运行器运行或调试单元测试时，弹出一个对话框，提示单元测试运行器无法运行测试-无法加载一个或多个请求的类型。检索LoaderExceptions属性用于更多信息：

When I run or debug my unit tests using Resharper Unit Test Runner, I get a dialog popping up that says "Unit Test Runner failed to run tests - Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information":

现在我已尝试重建，清理，手动删除文件夹，Visual Studio重新启动，硬件重新启动，在输出/调试窗口中查找，以及晚上启用R＃内部模式，以便我可以看到它的日志（据我所知写入％Temp％\JetLogs），但是这些都没有解决它或提供任何线索。我已经尝试过调试 R＃，但是在调试器遇到任何异常之前，对话框再次弹出。

Now I have tried rebuilds, cleans, manually deleting folders, visual studio restarts, hardware restarts, looking in output/debug windows, and evening enabling R# "internal" mode so that I can see it's logs (written to %Temp%\JetLogs as I understand), but none of that resolves it or gives any clues at all. I have tried "debugging" R# but again the dialog pops up before the debugger hits any exceptions.

我该怎么解决这个问题？

How the hell am I supposed to resolve this? It's extremely annoying!

我正在使用：

• R＃2016.1。 2


• NUnit 3.2.1


• Visual Studio 2015更新2（14.0.25123）

推荐答案

我最终用一种非常简单的方法对此进行了诊断：

I ended up diagnosing this with a fairly simple method:

我转换了单位从类库测试程序集到控制台应用程序，并添加了Main入口点（如下所示）。我在其中迭代所有我希望会导致所有类型的程序集类型。依赖的程序集被加载，这将揭示任何加载异常。是的，它奏效了。它很快抛出了 System.Reflection.ReflectionTypeLoadException ，它是错误消息无法加载一个或多个...的规范来源。在调试器中，我可以检查 LoaderExceptions 属性，该属性告诉我潜在的问题是什么。

I converted my unit test assembly from a class library into a console application and added a Main entry point (shown below). Within there I iterate all of the assemblies types which I hoped would cause all types & dependent assemblies to be loaded, which would reveal any load exceptions. And yes it worked. It quickly threw a System.Reflection.ReflectionTypeLoadException which is the canonical source of the error message "Unable to load one or more...". In the debugger I could examine the LoaderExceptions property which told me what the underlying problem was.

public class Program
{ 
    public static void Main(string[] args)
    {
        var types = Assembly.GetExecutingAssembly().GetTypes();
    }
}

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