def testgetconstructor(self):
"""
We test the get_constructor method. We send in each of the valid types and get the constructors for
those types. We make sure each type gets its appropriate constructor
"""
func = Change.get_constructor("atomic")
self.assertEqual(func, Change.atomic, msg="Failed to get atomic constructor")
func = Change.get_constructor("node")
self.assertEqual(func, Change.node, msg="Failed to get node constructor")
func = Change.get_constructor("sweep")
self.assertEqual(func, Change.sweep, msg="Failed to get sweep constructor")
func = Change.get_constructor("arm")
self.assertEqual(func, Change.arm, msg="Failed to get arm constructor")
# -------- Try invalid option
self.assertRaises(ValueError, Change.get_constructor, "super_type")
