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I have a solution of 52 projects mixed with C#, MFC and C++/CLI working with Visual Studio 2019. Recently I retargeted it to Visual Studio 2022 and moved all C++ projects to C++20. This solution has two test projects: one .NET only and a second one (the main one) native (but some code is C++/CLI). Both are DLL. Visual Studio is 17.3.3.
In VS2019, the test framework detected all tests without problem, but VS2022 does not detect any test. Manually running the tests: vstest.console.exe .\PolarisUnitTests.dll /Platform:x86 /diag:diag.txt, returns:
Microsoft (R) Test Execution Command Line Tool Version 17.3.0-preview-20220626-01 (x64)
Copyright (c) Microsoft Corporation. All rights reserved.Starting test execution, please wait...
Logging Vstest Diagnostics in file: D:\src\software\Polaris\testing\Debug\diag.txt
A total of 1 test files matched the specified pattern.
No test is available in D:\src\software\Polaris\testing\Debug.\PolarisUnitTests.dll. Make sure that test discoverer & executors are registered and > platform & framework version settings are appropriate and try again.Additionally, path to test adapters can be specified using /TestAdapterPath command. Example /TestAdapterPath:<pathToCustomAdapters>.
Generated logs do not contain any errors. The problem is that Test Framework does not find any test into the DLL. Running this DLL with Command Line Test Tool v. 16.11.0 still does not find any test, then I assume the issue is in the compiler/linker not putting the right metadata.
Any idea how to resolve this? Thanks.
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Hello, do you have MSTest.TestAdapter and MSTest.TestFramework packages referenced in your projects?
Please try to update them to the latest version and run the test again.
If it doesn’t work, you can change the Platform from x86 to x64 and try again.
The not working test DLL is native only (well, some C++/CLI inside other projects code that is being tested, but not related to the tests themselves), and References node is empty and does not allow add .NET stuff.
A try to add any of the two packages via nuget, returns
Could not install package 'MSTest.TestAdapter 2.2.10'. You are trying to install this package into a project that targets 'native,Version=v0.0', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author.
does not matter if I try to add them to any native project or the project test DLL itself.
Application cannot be x64 because it depends on some 3rd party 32 bit only DLL that sometimes are loaded via old good Win32 LoadLibrary and others via normal import library.
The issue could be related to C++20 compilers, both VS2019 and VS2022, because if I recompile the old solution, it detects the native tests.
I've created a new empty native DLL test, and some sample empty tests are detected, and I can run/debug them, but at the moment I add one line of code related to other projects, it stops detecting any test, even the empty sample ones. It happens even if the added test is related to a simple DLL containing a plain serial comm envelope class that only uses Win32 and C++ runtime calls.
Can you share us full diagnostic log?