def test_delete_class(self):
model = UMLModel()
model.create_class("class1")
model.create_class("class2")
# create relationship between classes
model.create_relationship("composition", "class1", "class2")
# Ensure relationship is created
self.assertTrue(model.classes["class1"].has_relationship("class2"))
self.assertTrue(model.classes["class2"].has_relationship("class1"))
# Ensure deleted
model.delete_class("class1")
# assert dictionary key was removed
self.assertTrue("class1" not in model.classes)
# Ensure relationship was removed after deletion of class1
status, msg = model.list_relationships("class2")
self.assertTrue(status)
self.assertEqual(msg, "Class 'class2' has no relationships")
# Ensure no errors when class DNE
status, msg = model.delete_class("class1")
# ensure it failed
self.assertFalse(status)
self.assertEqual(msg, "class1 does not exist.")
def test_list_relationships(self):
model = UMLModel()
model.create_class("class1")
model.create_class("class2")
# variables used for testing equality
message = model.list_relationships("class5")[1]
# test output equality with using a non-existent class name
self.assertEqual(message, "class5 does not exist")
# test with a parameter
# variables used for testing equality
message = model.list_relationships('class1')[1]
# test output equality without creating a relationship
self.assertEqual(message, "Class 'class1' has no relationships")
# test without a parameter
# variables used for testing equality
message = model.list_relationships()[1]
# test output equality without creating a relationship
self.assertEqual(message, "No relationships exist for the current model")
# create a relationship between the classes
model.create_relationship("inheritance", "class1", "class2")
# test with a parameter
message = model.list_relationships("class1")[1]
# test output equality
outString = "".join(("Relationships for class1\n",
"class1 ---------> class2"))
self.assertEqual(message, outString)
# test without a parameter
# variables used for testing equality
message = model.list_relationships()[1]
outString = "".join(("Listing all relationships\n",
"class1 ---------> class2\n",
"class2 <--------- class1"))
# test output equality
self.assertEqual(message,outString)