Multi-language support — C++ and C# test execution

[ThomasMalletCodra]

Description

Extend ModuleTester beyond Python-only test execution to support running tests written in other languages — primarily C++ and C# (or web). This would allow teams working on multi-language projects to manage all their test plans in a single tool.

Current behavior

• Only Python scripts can be executed as test items.
• Test discovery (guitest) only works with Python files.
• Non-Python tests must be wrapped in Python launcher scripts.

Expected behavior

• Test items can reference executables (.exe, compiled test binaries) directly.
• Support for common C++ test frameworks: Google Test, Catch2 (parse their output).
• Support for C# test runners: dotnet test with result parsing.
• Language-agnostic "command" test type for arbitrary executables.
• Test discovery can be extended via plugins or configuration.

Implementation ideas

1. Add a generic CommandTestItem type that runs any executable and captures exit code + output.
2. Add output parsers for Google Test XML (--gtest_output=xml) and dotnet test --logger trx.
3. Allow moduletester.ini to define custom test runners:

   [test_runners]
   cpp = gtest
   csharp = dotnet_test

4. Plugin architecture: ITestRunner interface with discover(), execute(), parse_result().

Acceptance criteria

• Arbitrary executables can be added as test items
• Exit code is used as pass/fail indicator for generic commands
• At least one C++ framework output parser (Google Test or Catch2)
• At least one C# framework output parser (dotnet test)
• Custom test runners can be configured per project

References

Ideas like Conan2 package manager for C++ project written in Python : https://github.com/conan-io/conan