ci: add InProcess testing module

[germa89]

Description

Adding framework for testing MAPDL InProcess interface

Issue linked

NA

Checklist

• I have visited and read Develop PyMAPDL.
• I have tested my changes locally
• I have added necessary documentation or updated existing documentation.
• I have followed the PyMAPDL coding style guidelines.
• I have added appropriate unit tests that also ensure the minimal coverage criteria.
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved to the PR if any.
• I have assigned this PR to myself.
• I have marked this PR as draft if it is not ready to be reviewed yet.
• I have made sure that the title of my PR follows Commit naming conventions (e.g. feat: adding new MAPDL command)

[Copilot]

Pull Request Overview

This PR adds a testing framework for the MAPDL InProcess interface, which allows testing Python code execution within MAPDL. The framework provides a test runner that executes MAPDL commands in batch mode and validates Python command functionality.

• Introduces MapdlInProcessRunner class for executing MAPDL commands with Python integration
• Adds pytest fixture for InProcess testing with version and environment checks
• Provides basic test cases to verify Python command execution within MAPDL

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.41%. Comparing base (b3a026c) to head (47da5e7).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4185      +/-   ##
==========================================
+ Coverage   91.39%   91.41%   +0.02%     
==========================================
  Files         193      193              
  Lines       15715    15720       +5     
==========================================
+ Hits        14362    14370       +8     
+ Misses       1353     1350       -3     

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[germa89]

@valallansys this should gives you a nice headstart for InProcess testing. It should be noticed that you should set the env variable TEST_INPROCESS to true.

[valallansys]

Tests are failing on windows (locally). It seems to be an issue with the arguments given to subprocess.run.
test_start_python_from_pymapdl is not failing
@germa89 any ideas ?

[valallansys]

Tests are failing on windows (locally). It seems to be an issue with the arguments given to subprocess.run. test_start_python_from_pymapdl is not failing @germa89 any ideas ?

This is corrected, tests are passing on both linux and windows. @germa89 would you like to try locally on macos ?

[germa89]

MacOS does not support MAPDL, so we do not have to test it.

What was the issue? I saw your last commit and I dont know if the error was comming from the MAPDL env var or from the additional switches...

[valallansys]

MacOS does not support MAPDL, so we do not have to test it.

What was the issue? I saw your last commit and I dont know if the error was comming from the MAPDL env var or from the additional switches...

Deleting the additional switches was a mistake, the error came from the env argument. But we didn't need it as we set the en var in the init

[germa89]

@valallansys how are you doing with this? do you need any support?