def testCppPythonInheritanceDirectors(self):
""" Test that we can extend a C++ object in Python and use the extensions from C++ """
# This returns "I am a C++ object".
cpp_class = SimpleDummyBaseClass()
self.assertEqual(cpp_class.whoAmI(), "I am a C++ object")
# This is a dummy prototype.
class DerrivedClass(SimpleDummyBaseClass):
def __init__(self):
# Call the base class constructor.
SimpleDummyBaseClass.__init__(self)
def whoAmI(self):
return "I am extended in Python"
# Now we get another answer from calling whoAmI()
py_class = DerrivedClass()
self.assertEqual(py_class.whoAmI(), "I am extended in Python")
# Calling from C++ gives the same result.
self.assertEqual(Backend.callWhoAmI(cpp_class), "I am a C++ object")
self.assertEqual(Backend.callWhoAmI(py_class), "I am extended in Python")
def __init__(self):
# Call the base class constructor.
SimpleDummyBaseClass.__init__(self)