def test_dist_g(self): location1 = Location('Dublin', "Irish", 30) location2 = Location('Florida', "American", 30) self.assertTrue(location1.dist_g(location2) == 8.0) location3 = Location('Canberra', "Australian", 30) location4 = Location('Toronto', "Canadian", 30) self.assertTrue(location3.dist_g(location4) == 9.0) location5 = Location('Rio de Janeiro', "Brazilian", 30) location6 = Location('New Dehli', "Indian", 30) self.assertTrue(location5.dist_g(location6) == 23.0) location7 = Location('New Dehli', "Indian", 30) location8 = Location('Tokyo', "Japanese", 30) self.assertTrue(location7.dist_g(location8) == 18.0) self.assertTrue(location7.dist_g(location7) == 2.0)