FEM: ccx unit tests, add material nonlinear input file writing test

src/Mod/Fem/CMakeLists.txt

@@ -176,6 +176,7 @@ SET(FemTestsCcx_SRCS
     femtest/data/ccx/cube_static_expected_values
     femtest/data/ccx/cube_static.FCStd
     femtest/data/ccx/cube.FCStd
+    femtest/data/ccx/mat_nonlinear.inp
     femtest/data/ccx/multimat.inp
     femtest/data/ccx/spine_thermomech.inp
     femtest/data/ccx/spine_thermomech.dat

src/Mod/Fem/TestFem.py

@@ -125,10 +125,11 @@ gf()
 ./bin/FreeCADCmd --run-test "femtest.app.test_femimport.TestObjectExistance.test_objects_existance"
 ./bin/FreeCADCmd --run-test "femtest.app.test_ccxtools.TestCcxTools.test_1_static_analysis"
 ./bin/FreeCADCmd --run-test "femtest.app.test_ccxtools.TestCcxTools.test_2_static_multiple_material"
-./bin/FreeCADCmd --run-test "femtest.app.test_ccxtools.TestCcxTools.test_3_freq_analysis"
-./bin/FreeCADCmd --run-test "femtest.app.test_ccxtools.TestCcxTools.test_4_thermomech_analysis"
-./bin/FreeCADCmd --run-test "femtest.app.test_ccxtools.TestCcxTools.test_5_Flow1D_thermomech_analysis"
-./bin/FreeCADCmd --run-test "femtest.app.test_ccxtools.TestCcxTools.test_6_contact_shell_shell"
+./bin/FreeCADCmd --run-test "femtest.app.test_ccxtools.TestCcxTools.test_3_static_material_nonlinar"
+./bin/FreeCADCmd --run-test "femtest.app.test_ccxtools.TestCcxTools.test_4_freq_analysis"
+./bin/FreeCADCmd --run-test "femtest.app.test_ccxtools.TestCcxTools.test_5_thermomech_analysis"
+./bin/FreeCADCmd --run-test "femtest.app.test_ccxtools.TestCcxTools.test_6_Flow1D_thermomech_analysis"
+./bin/FreeCADCmd --run-test "femtest.app.test_ccxtools.TestCcxTools.test_7_contact_shell_shell"
 ./bin/FreeCADCmd --run-test "femtest.app.test_common.TestFemCommon.test_adding_refshaps"
 ./bin/FreeCADCmd --run-test "femtest.app.test_common.TestFemCommon.test_pyimport_all_FEM_modules"
 ./bin/FreeCADCmd --run-test "femtest.app.test_material.TestMaterialUnits.test_known_quantity_units"
@@ -170,16 +171,19 @@ import unittest
 unittest.TextTestRunner().run(unittest.TestLoader().loadTestsFromName("femtest.app.test_ccxtools.TestCcxTools.test_2_static_multiple_material"))
 
 import unittest
-unittest.TextTestRunner().run(unittest.TestLoader().loadTestsFromName("femtest.app.test_ccxtools.TestCcxTools.test_3_freq_analysis"))
+unittest.TextTestRunner().run(unittest.TestLoader().loadTestsFromName("femtest.app.test_ccxtools.TestCcxTools.test_3_static_material_nonlinar"))
 
 import unittest
-unittest.TextTestRunner().run(unittest.TestLoader().loadTestsFromName("femtest.app.test_ccxtools.TestCcxTools.test_4_thermomech_analysis"))
+unittest.TextTestRunner().run(unittest.TestLoader().loadTestsFromName("femtest.app.test_ccxtools.TestCcxTools.test_4_freq_analysis"))
 
 import unittest
-unittest.TextTestRunner().run(unittest.TestLoader().loadTestsFromName("femtest.app.test_ccxtools.TestCcxTools.test_5_Flow1D_thermomech_analysis"))
+unittest.TextTestRunner().run(unittest.TestLoader().loadTestsFromName("femtest.app.test_ccxtools.TestCcxTools.test_5_thermomech_analysis"))
 
 import unittest
-unittest.TextTestRunner().run(unittest.TestLoader().loadTestsFromName("femtest.app.test_ccxtools.TestCcxTools.test_6_contact_shell_shell"))
+unittest.TextTestRunner().run(unittest.TestLoader().loadTestsFromName("femtest.app.test_ccxtools.TestCcxTools.test_6_Flow1D_thermomech_analysis"))
+
+import unittest
+unittest.TextTestRunner().run(unittest.TestLoader().loadTestsFromName("femtest.app.test_ccxtools.TestCcxTools.test_7_contact_shell_shell"))
 
 import unittest
 unittest.TextTestRunner().run(unittest.TestLoader().loadTestsFromName("femtest.app.test_common.TestFemCommon.test_adding_refshaps"))

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

@@ -123,7 +123,28 @@ class TestCcxTools(unittest.TestCase):
         )
 
     # ********************************************************************************************
-    def test_3_freq_analysis(
+    def test_3_static_material_nonlinar(
+        self
+    ):
+        # set up
+        from femexamples.material_nl_platewithhole import setup
+        setup(self.active_doc, "ccxtools")
+        test_name = "nonlinear material test"
+        base_name = "mat_nonlinear"
+        analysis_dir = testtools.get_unit_test_tmp_dir(
+            self.temp_dir,
+            "FEM_ccx_matnonlinear"
+        )
+
+        # test input file writing
+        self.input_file_writing_test(
+            test_name=test_name,
+            base_name=base_name,
+            analysis_dir=analysis_dir,
+        )
+
+    # ********************************************************************************************
+    def test_4_freq_analysis(
         self
     ):
         # set up
@@ -156,7 +177,7 @@ class TestCcxTools(unittest.TestCase):
         )
 
     # ********************************************************************************************
-    def test_4_thermomech_analysis(
+    def test_5_thermomech_analysis(
         self
     ):
         # set up
@@ -189,7 +210,7 @@ class TestCcxTools(unittest.TestCase):
         )
 
     # ********************************************************************************************
-    def test_5_Flow1D_thermomech_analysis(
+    def test_6_Flow1D_thermomech_analysis(
         self
     ):
         # set up
@@ -222,7 +243,7 @@ class TestCcxTools(unittest.TestCase):
         )
 
     # ********************************************************************************************
-    def test_6_contact_shell_shell(
+    def test_7_contact_shell_shell(
         self
     ):
         # set up