# IfcOpenShell - IFC toolkit and geometry engine
# Copyright (C) 2021 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 numpy
import pytest
import test.bootstrap
import ifcopenshell.api


class TestUnassignStructuralAnalysisModel(test.bootstrap.IFC4):
    def test_unassigning_a_structural_analysis_model(self):
        subject = ifcopenshell.api.run("structural.add_structural_analysis_model", self.file)
        product = ifcopenshell.api.run(
            "root.create_entity", self.file, ifc_class="IfcStructuralMember", predefined_type=None, name=None
        )
        rel = ifcopenshell.api.run(
            "structural.assign_structural_analysis_model",
            self.file,
            product=product,
            structural_analysis_model=subject,
        )
        ifcopenshell.api.run(
            "structural.unassign_structural_analysis_model",
            self.file,
            product=product,
            structural_analysis_model=subject,
        )
        models = self.file.by_type("IfcStructuralAnalysisModel")
        rels = self.file.by_type("IfcRelAssignsToGroup")
        assert len(models[0].IsGroupedBy) == 0
        assert len(rels) == 0
