如何对一个vsix项目进行单元测试？

Question

I have a Visual Studio Extension project. It works fine, builds into a vsix and does its job. I'm using VS2017

I'd like to unit test it. I already wrote unit tests, using MSTest v2.

Problem is: When I try to build/run the test project, there's an error that it didn't find the myProject.dll, obviously because there isn't one (myProject builds to a .vsix file).

How do I unit test my vsix project?

Edit: Debugging it works fine.
Edit 2: The whole output is the vsmanifest file and a .vsix file. Installing and running works.

Tl;dr of the answer: Can't test a vsix.

Answer 1

Your test project should be a DLL type of file. After you will change it to "CS" type of file for example, the runner will be able to run your test

Answer 2

So I just stumbled across this post. The problem is the .dll and .pdb files are inside the vsix package. So to Unit Test, they need to be also outside of it.

This indicates a bug in the imported target in the .csproj file:

<Import Project="$(VSToolsPath)\VSSDK\Microsoft.VsSDK.targets" Condition="'$(VSToolsPath)' != ''" />

This target is removing the dll and pdb as it builds the vsix. It shouldn't do that. Now, the vsix is simply a zip file with a special name. So we can unzip it.

I added 7z.exe to my solution in a tools folder, and run this in the post build actions:

"$(SolutionDir)Tools\7z.exe" x -aoa "$(TargetDir)$(TargetName).vsix"

Now my unit tests work fine.