Add test for whether resolve wins in definition

I'm splitting the test below up into pieces. It'll be removed eventually, when I've made all of these separate tests.

Contributes to issue CURA-3497.

tests/Settings/TestGlobalStack.py

@@ -402,6 +402,17 @@ def test_getPropertyFallThrough(global_stack):
     global_stack.userChanges = mock_layer_heights[container_indexes.UserChanges]
     assert global_stack.getProperty("layer_height", "value") == container_indexes.UserChanges
 
+##  In definitions, when the value is asked and there is a resolve function, it
+#   must get the resolve first.
+def test_getPropertyResolveInDefinition(global_stack):
+    resolve_and_value = unittest.mock.MagicMock() #Sets the resolve and value for bed temperature.
+    resolve_and_value.getProperty = lambda key, property: (7.5 if property == "resolve" else 5) if (key == "material_bed_temperature") else None #7.5 resolve, 5 value.
+
+    with unittest.mock.patch("cura.Settings.CuraContainerStack.DefinitionContainer", unittest.mock.MagicMock): #To guard against the type checking.
+        global_stack.definition = resolve_and_value
+    assert global_stack.getProperty("material_bed_temperature", "value") == 7.5 #Resolve wins in the definition.
+
+##  Tests whether the resolve property is properly obtained in all cases.
 @pytest.mark.skip
 def test_getPropertyWithResolve(global_stack):
     #Define some containers for the stack.