Add constraint tests

testing/test_constraints.py

@@ -0,0 +1,15 @@
+import glob
+from pathlib import Path
+from CAD_Sketcher.testing.utils import BgsTestCase
+
+class TestConstraints(BgsTestCase):
+    def test_constraints(self):
+        import bpy
+        path = str(Path(__file__).parent.absolute() / "constraints" / "*.blend")
+        test_files = glob.glob(path)
+        for test_file in test_files:
+            with bpy.data.libraries.load(test_file) as (data_from, data_to):
+                for attr in dir(data_to):
+                    setattr(data_to, attr, getattr(data_from, attr))
+                ok = self.context.scene.sketcher.solve(self.context)
+                self.assertTrue(ok)