New feature to calculate the radius of a polygonal circle

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"