FEM: Ensure tests run without GUI with data extraction code

src/Mod/Fem/femguiutils/post_visualization.py

@@ -29,14 +29,16 @@ __url__ = "https://www.freecad.org"
 #  \ingroup FEM
 #  \brief A registry to collect visualizations for use in menus
 
+# Note: This file is imported from FreeCAD App files. Do not import any FreeCADGui
+#       directly to support cmd line use.
+
 import copy
 from dataclasses import dataclass
 
-from PySide import QtGui, QtCore
+from PySide import QtCore
 
 import FreeCAD
-import FreeCADGui
-import FemGui
+
 
 # Registry to handle visulization commands
 # ########################################
@@ -102,6 +104,7 @@ class _VisualizationGroupCommand:
         if not FreeCAD.ActiveDocument:
             return False
 
+        import FemGui
         return bool(FemGui.getActiveAnalysis())
 
 
@@ -129,9 +132,11 @@ class _VisualizationCommand:
         if not FreeCAD.ActiveDocument:
             return False
 
+        import FemGui
         return bool(FemGui.getActiveAnalysis())
 
     def Activated(self):
+        import FreeCADGui
 
         vis = _registry[self._visualization_type]
         FreeCAD.ActiveDocument.openTransaction(f"Create {vis.name}")
@@ -155,6 +160,8 @@ def setup_commands(toplevel_name):
     # creates all visualization commands and registers them. The
     # toplevel group command will have the name provided to this function.
 
+    import FreeCADGui
+
     # first all visualization and extraction commands
     for vis in _registry:
         FreeCADGui.addCommand(_to_command_name(vis), _VisualizationCommand(vis))

src/Mod/Fem/femguiutils/vtk_module_handling.py

@@ -47,6 +47,10 @@ __title__ = "FEM GUI vtk python module check"
 __author__ = "Stefan Tröger"
 __url__ = "https://www.freecad.org"
 
+
+# Note: This file is imported from FreeCAD App files. Do not import any FreeCADGui
+#       directly to support cmd line use.
+
 __user_input_received = False