FEM: fix unit test

src/Mod/Fem/TestFemGui.py

@@ -25,7 +25,7 @@
 
 # Gui Unit tests for the FEM module
 # to get the right order import as is used
-from femtest.gui.test_femopen import TestObjectOpen as FemGuiTest01
+from femtest.gui.test_open import TestObjectOpen as FemGuiTest01
 
 
 # dummy usage to get flake8 and lgtm quiet

src/Mod/Fem/femtest/app/test_common.py

@@ -116,7 +116,10 @@ class TestFemCommon(unittest.TestCase):
             ) and sys.version_info.major < 3:
                 continue
 
-            if mod == "femsolver.solver_taskpanel" and not FreeCAD.GuiUp:
+            if (
+                mod == "femsolver.solver_taskpanel"
+                or mod == "TestFemGui"
+            ) and not FreeCAD.GuiUp:
                 continue
 
             fcc_print("Try importing {0} ...".format(mod))