New feature to calculate the radius of a polygonal circle

src/blenderbim/test/bim/feature/qto.feature

@@ -0,0 +1,30 @@
+@qto
+Feature: Qto
+
+Scenario: Calculate circle radius
+    Given an empty Blender session
+    And I add a cube
+    And the object "Cube" is selected
+    When I press "bim.calculate_circle_radius"
+    Then "scene.BIMQtoProperties.qto_result" is "1.732"
+
+Scenario: Calculate edge lengths
+    Given an empty Blender session
+    And I add a cube
+    And the object "Cube" is selected
+    When I press "bim.calculate_edge_lengths"
+    Then "scene.BIMQtoProperties.qto_result" is "24.0"
+
+Scenario: Calculate face areas
+    Given an empty Blender session
+    And I add a cube
+    And the object "Cube" is selected
+    When I press "bim.calculate_face_areas"
+    Then "scene.BIMQtoProperties.qto_result" is "24.0"
+
+Scenario: Calculate object volumes
+    Given an empty Blender session
+    And I add a cube
+    And the object "Cube" is selected
+    When I press "bim.calculate_object_volumes"
+    Then "scene.BIMQtoProperties.qto_result" is "8.0"

src/blenderbim/test/bim/test_feature.py

@@ -358,7 +358,7 @@ def the_object_name_is_at_location(name, location):
 
 
 @then(parsers.parse('the file "{name}" should contain "{value}"'))
-def the_file_name_should_contain_value(name, value):    
+def the_file_name_should_contain_value(name, value):
     name = replace_variables(name)
     with open(name, "r") as f:
         assert value in f.read()

src/blenderbim/test/core/bootstrap.py

@@ -84,6 +84,13 @@ def owner():
     prophet.verify()
 
 
+@pytest.fixture
+def qto():
+    prophet = Prophecy(blenderbim.core.tool.Qto)
+    yield prophet
+    prophet.verify()
+
+
 @pytest.fixture
 def root():
     prophet = Prophecy(blenderbim.core.tool.Root)
@@ -127,15 +134,15 @@ def type():
 
 
 @pytest.fixture
-def voider():
-    prophet = Prophecy(blenderbim.core.tool.Voider)
+def unit():
+    prophet = Prophecy(blenderbim.core.tool.Unit)
     yield prophet
     prophet.verify()
 
 
 @pytest.fixture
-def unit():
-    prophet = Prophecy(blenderbim.core.tool.Unit)
+def voider():
+    prophet = Prophecy(blenderbim.core.tool.Voider)
     yield prophet
     prophet.verify()
 

src/blenderbim/test/core/test_qto.py

@@ -0,0 +1,27 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 2021 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of BlenderBIM Add-on.
+#
+# BlenderBIM Add-on is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# BlenderBIM Add-on 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
+
+import blenderbim.core.qto as subject
+from test.core.bootstrap import qto
+
+
+class TestCalculateCircleRadius:
+    def test_run(self, qto):
+        qto.get_radius_of_selected_vertices("obj").should_be_called().will_return("radius")
+        qto.set_qto_result("radius").should_be_called()
+        assert subject.calculate_circle_radius(qto, obj="obj") == "radius"

src/blenderbim/test/tool/test_qto.py

@@ -0,0 +1,41 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 2021 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of BlenderBIM Add-on.
+#
+# BlenderBIM Add-on is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# BlenderBIM Add-on 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
+
+import bpy
+import ifcopenshell
+import test.bim.bootstrap
+import blenderbim.core.tool
+import blenderbim.tool as tool
+from blenderbim.tool.qto import Qto as subject
+
+
+class TestImplementsTool(test.bim.bootstrap.NewFile):
+    def test_run(self):
+        assert isinstance(subject(), blenderbim.core.tool.Qto)
+
+
+class TestGetRadiusOfSelectedVertices(test.bim.bootstrap.NewFile):
+    def test_run(self):
+        bpy.ops.mesh.primitive_circle_add()
+        assert round(subject.get_radius_of_selected_vertices(bpy.data.objects.get("Circle")), 3) == 1
+
+
+class TestSetQtoResult(test.bim.bootstrap.NewFile):
+    def test_run(self):
+        subject.set_qto_result(123.4567)
+        assert bpy.context.scene.BIMQtoProperties.qto_result == "123.457"