Add number of tests for ConvexHullDecorator

tests/TestConvexHullDecorator.py

@@ -0,0 +1,98 @@
+from unittest.mock import patch, MagicMock
+
+import pytest
+
+from UM.Scene.SceneNode import SceneNode
+from UM.Scene.SceneNodeDecorator import SceneNodeDecorator
+from cura.Scene.ConvexHullDecorator import ConvexHullDecorator
+
+mocked_application = MagicMock()
+mocked_controller = MagicMock()
+# We need to mock out this function, otherwise we get a recursion
+mocked_controller.isToolOperationActive = MagicMock(return_value = False)
+mocked_application.getController = MagicMock(return_value = mocked_controller)
+
+
+class NonPrintingDecorator(SceneNodeDecorator):
+    def isNonPrintingMesh(self):
+        return True
+
+
+class PrintingDecorator(SceneNodeDecorator):
+    def isNonPrintingMesh(self):
+        return False
+
+
+@pytest.fixture
+def convex_hull_decorator():
+    with patch("cura.CuraApplication.CuraApplication.getInstance", MagicMock(return_value = mocked_application)):
+        with patch("UM.Application.Application.getInstance", MagicMock(return_value = mocked_application)):
+            with patch("cura.Settings.ExtruderManager.ExtruderManager.getInstance"):
+                return ConvexHullDecorator()
+
+
+def test_getSetNode(convex_hull_decorator):
+    node = SceneNode()
+    with patch("UM.Application.Application.getInstance", MagicMock(return_value=mocked_application)):
+        convex_hull_decorator.setNode(node)
+    assert convex_hull_decorator.getNode() == node
+
+
+def test_getConvexHullBoundaryNoNode(convex_hull_decorator):
+    assert convex_hull_decorator.getConvexHullBoundary() is None
+
+
+def test_getConvexHeadFullNoNode(convex_hull_decorator):
+    assert convex_hull_decorator.getConvexHullHeadFull() is None
+
+
+def test_getConvexHulLBoundaryNotPrintingMesh(convex_hull_decorator):
+    node = SceneNode()
+    node.addDecorator(NonPrintingDecorator())
+    with patch("UM.Application.Application.getInstance", MagicMock(return_value=mocked_application)):
+        convex_hull_decorator.setNode(node)
+    assert convex_hull_decorator.getConvexHullBoundary() is None
+
+
+def test_getConvexHulLBoundaryPrintingMesh(convex_hull_decorator):
+    node = SceneNode()
+    node.addDecorator(PrintingDecorator())
+    with patch("UM.Application.Application.getInstance", MagicMock(return_value=mocked_application)):
+        convex_hull_decorator.setNode(node)
+    # Should still be None, since print sequence is not one at a time
+    assert convex_hull_decorator.getConvexHullBoundary() is None
+
+
+def test_getConvexHulLBoundaryPrintingMeshOneAtATime(convex_hull_decorator):
+    node = SceneNode()
+    node.addDecorator(PrintingDecorator())
+    with patch("UM.Application.Application.getInstance", MagicMock(return_value=mocked_application)):
+        convex_hull_decorator.setNode(node)
+    convex_hull_decorator._global_stack = MagicMock()
+    convex_hull_decorator._global_stack.getProperty = MagicMock(return_value = "one_at_a_time")
+    # In this test we don't care for the result of the function, just that the convex hull computation is called.
+    convex_hull_decorator._compute2DConvexHull = MagicMock()
+    convex_hull_decorator.getConvexHullBoundary()
+    convex_hull_decorator._compute2DConvexHull.assert_called_once_with()
+
+
+def value_changed(convex_hull_decorator, key):
+    convex_hull_decorator._onChanged = MagicMock()
+    convex_hull_decorator._onSettingValueChanged(key, "value")
+    convex_hull_decorator._onChanged.assert_called_once_with()
+
+    # This should have no effect at all
+    convex_hull_decorator._onSettingValueChanged(key, "not value")
+    convex_hull_decorator._onChanged.assert_called_once_with()
+
+
+@pytest.mark.parametrize("key", ConvexHullDecorator._affected_settings)
+def test_onSettingValueChangedAffectedSettings(convex_hull_decorator, key):
+    value_changed(convex_hull_decorator, key)
+
+
+@pytest.mark.parametrize("key", ConvexHullDecorator._influencing_settings)
+def test_onSettingValueChangedInfluencingSettings(convex_hull_decorator, key):
+    convex_hull_decorator._init2DConvexHullCache = MagicMock()
+    value_changed(convex_hull_decorator, key)
+    convex_hull_decorator._init2DConvexHullCache.assert_called_once_with()