def test_delta_in_meters_increasing_lat(self):
initial_point = LatLon(10, 65)
final_point = LatLon(11, 65)
expected_delta = (110605.5709, 0.0000000002)
self.assertAlmostEqual(initial_point.delta_in_meters(final_point)[0],
expected_delta[0],
places=4)
self.assertAlmostEqual(initial_point.delta_in_meters(final_point)[1],
expected_delta[1],
places=4)
def test_delta_in_meters_decreasing_lon(self):
initial_point = LatLon(10, 65)
final_point = LatLon(10, 64)
expected_delta = (166.1395712, -109633.7978)
self.assertAlmostEqual(initial_point.delta_in_meters(final_point)[0],
expected_delta[0],
places=4)
self.assertAlmostEqual(initial_point.delta_in_meters(final_point)[1],
expected_delta[1],
places=4)
def test_delta_in_meters_decreasing_lat(self):
initial_point = LatLon(10, 65)
final_point = LatLon(9, 65)
expected_delta = (-110598.9407, 0.0000000002)
self.assertAlmostEqual(initial_point.delta_in_meters(final_point)[0],
expected_delta[0],
places=4)
self.assertAlmostEqual(initial_point.delta_in_meters(final_point)[1],
expected_delta[1],
places=4)
def test_delta_in_meters_with_no_displacement(self):
initial_point = LatLon(10, 65)
final_point = LatLon(10, 65)
expected_delta = (0, 0)
self.assertAlmostEqual(initial_point.delta_in_meters(final_point)[0],
expected_delta[0],
places=4)
self.assertAlmostEqual(initial_point.delta_in_meters(final_point)[1],
expected_delta[1],
places=4)