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)
