def test_same_dest(self):
self.assertEqual(metric.distance_between(self.home, self.home), 0)
self.assertEqual(metric.time_between(self.home, self.home), 0)
def test_distance(self):
dist = metric.distance_between(self.home, self.davis)
# 12 miles = 19312 meters
self.assertTrue( 19000 < dist < 19550 )