More fixes

.github/workflows/unit-tests.yml

@@ -36,14 +36,19 @@ jobs:
           pip install build
           pip install -U .
 
+      - name: Install apt packages
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y xvfb
+
       - name: Set PYTHONPATH
         run: |
-          echo "$PYTHONPATH"
           echo "PYTHONPATH=/home/runner/work/MethodicConfigurator/ardupilot_methodic_configurator/ardupilot_methodic_configurator" >> $GITHUB_ENV
-          echo "$PYTHONPATH"
 
       - name: Test with unittest
         run: |
+          export DISPLAY=:99
+          Xvfb :99 -screen 0 1024x768x16 &
           python -m unittest discover -s ./unittests -p '*_test.py'
 
       - name: Unittest coverage report

unittests/frontend_tkinter_parameter_editor_documentation_frame_test.py

@@ -10,7 +10,6 @@
 SPDX-License-Identifier: GPL-3.0-or-later
 """
 
-# import os
 import tkinter as tk
 import unittest
 from tkinter import ttk
@@ -23,11 +22,6 @@ class TestDocumentationFrame(unittest.TestCase):
     """Test the DocumentationFrame class."""
 
     def setUp(self) -> None:
-        # if os.getenv("GITHUB_ACTIONS"):
-        #    os.environ["DISPLAY"] = ":99"  # Set DISPLAY environment variable for headless mode
-        #    import subprocess
-        #
-        #    subprocess.run(["Xvfb", ":99", "-screen", "0", "1024x768x16"], check=False)
         self.root = tk.Tk()
         self.local_filesystem = Mock()
         self.local_filesystem.get_documentation_text_and_url.return_value = ("Sample blog text", "http://example.com/blog")