fix CI, drop support for python 3.9, add support for python 3.12

.github/workflows/conmech_tests.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         platform: [ ubuntu-latest, macos-13, windows-latest ]
-        python-version: [ "3.9", "3.10", "3.11"]
+        python-version: [ "3.10", "3.11", "3.12"]
     runs-on: ${{ matrix.platform }}
     steps:
       - uses: actions/checkout@v2

tests/test_conmech/regression/std_boundary.py

@@ -7,7 +7,7 @@
 
 
 def standard_boundary_nodes(nodes, elements):
-    """
+    r"""
     Return nodes indices counter-clockwise for standard body (rectangle) with first node in (0, 0).
 
     For body:

tests/test_conmech/regression/test_Makela_et_al_1998.py

@@ -24,11 +24,17 @@
 from conmech.mesh.boundaries_description import BoundariesDescription
 from conmech.scenarios.problems import StaticDisplacementProblem
 from conmech.simulations.problem_solver import StaticSolver
-from conmech.properties.mesh_description import CrossMeshDescription, RectangleMeshDescription
-from conmech.solvers.optimization.optimization import Optimization
+from conmech.properties.mesh_description import RectangleMeshDescription
 from examples.Makela_et_al_1998 import MMLV99
 from tests.test_conmech.regression.std_boundary import standard_boundary_nodes
 
+try:
+    import kosopt
+
+    available_opt_mtds = ["Powell", "qsm", "globqsm"]
+except ImportError:
+    available_opt_mtds = ["Powell"]
+
 
 @pytest.fixture(params=["schur"])
 def solving_method(request):
@@ -118,7 +124,8 @@ def generate_test_suits():
         [0.0, 0.0],
         [0.0, 0.0],
     ]
-    test_suites.append((optimization_mtd_pow, expected_displacement_vector_pow))
+    if optimization_mtd_pow in available_opt_mtds:
+        test_suites.append((optimization_mtd_pow, expected_displacement_vector_pow))
 
     optimization_mtd_subg = "globqsm"
     expected_displacement_vector_subg = [
@@ -200,8 +207,10 @@ def generate_test_suits():
         [0.0, 0.0],
     ]
 
-    test_suites.append((optimization_mtd_subg, expected_displacement_vector_subg))
-    test_suites.append(("qsmlm", expected_displacement_vector_subg))
+    if optimization_mtd_subg in available_opt_mtds:
+        test_suites.append((optimization_mtd_subg, expected_displacement_vector_subg))
+    if "qsmlm" in available_opt_mtds:
+        test_suites.append(("qsmlm", expected_displacement_vector_subg))
 
     return test_suites