constraint.unassign_constraint - support batching #4474

src/ifcopenshell-python/test/api/constraint/test_unassign_constraint.py

@@ -0,0 +1,67 @@
+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2022 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of IfcOpenShell.
+#
+# IfcOpenShell is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# IfcOpenShell is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.
+
+import pytest
+import test.bootstrap
+import ifcopenshell.api
+import ifcopenshell.util.constraint
+
+
+class TestUnassignConstraint(test.bootstrap.IFC4):
+    def test_unassigning_a_constraint(self):
+        constraint = ifcopenshell.api.run("constraint.add_objective", self.file)
+        element = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
+        element2 = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
+        ifcopenshell.api.run(
+            "constraint.assign_constraint", self.file, products=[element, element2], constraint=constraint
+        )
+        ifcopenshell.api.run(
+            "constraint.unassign_constraint", self.file, products=[element, element2], constraint=constraint
+        )
+        assert ifcopenshell.util.constraint.get_constrained_elements(element) == set()
+        assert len(self.file.by_type("IfcRelAssociatesConstraint")) == 0
+
+    def test_doing_nothing_if_no_constraint(self):
+        constraint = ifcopenshell.api.run("constraint.add_objective", self.file)
+        element = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
+        element2 = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
+        ifcopenshell.api.run(
+            "constraint.unassign_constraint", self.file, products=[element, element2], constraint=constraint
+        )
+        assert ifcopenshell.util.constraint.get_constrained_elements(element) == set()
+        assert ifcopenshell.util.constraint.get_constrained_elements(element2) == set()
+
+    def test_updating_the_rel_when_a_reference_is_removed_with_multipled_elements(self):
+        constraint = ifcopenshell.api.run("constraint.add_objective", self.file)
+        element1 = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
+        element2 = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
+        element3 = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
+        ifcopenshell.api.run("constraint.assign_constraint", self.file, products=[element1], constraint=constraint)
+        rel = self.file.by_type("IfcRelAssociatesConstraint")[0]
+
+        ifcopenshell.api.run(
+            "constraint.assign_constraint", self.file, products=[element2, element3], constraint=constraint
+        )
+        ifcopenshell.api.run(
+            "constraint.unassign_constraint", self.file, products=[element1, element2], constraint=constraint
+        )
+        assert rel.RelatedObjects == (element3,)
+
+
+class TestUnassignConstraintIFC2X3(test.bootstrap.IFC2X3, TestUnassignConstraint):
+    pass

src/ifcopenshell-python/test/api/test_api.py

@@ -298,3 +298,16 @@ class TestTemporarySupportForDeprecatedAPIArguments(test.bootstrap.IFC4):
         constraint = ifcopenshell.api.run("constraint.add_objective", self.file)
         ifcopenshell.api.run("constraint.assign_constraint", self.file, product=element, constraint=constraint)
         assert ifcopenshell.util.constraint.get_constrained_elements(constraint) == {element}
+
+    @deprecation_check
+    def test_unassigning_a_constraint(self):
+        constraint = ifcopenshell.api.run("constraint.add_objective", self.file)
+        element = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
+        ifcopenshell.api.run(
+            "constraint.assign_constraint", self.file, product=element, constraint=constraint
+        )
+        ifcopenshell.api.run(
+            "constraint.unassign_constraint", self.file, product=element, constraint=constraint
+        )
+        assert ifcopenshell.util.constraint.get_constrained_elements(element) == set()
+        assert len(self.file.by_type("IfcRelAssociatesConstraint")) == 0