'Test IS_DYNAMIC_FIELDNAME with valid field names'

def testPass(self):

    assertEqual = self.assertEqual
    requires = IS_DYNAMIC_FIELDNAME()
    (value, error) = requires('example')
    assertEqual(value, 'example')
    assertEqual(error, None)
    (value, error) = requires('Another_Example')
    assertEqual(value, 'another_example')
    assertEqual(error, None)
