def test_a_variety_of_precisions(self):
"""uses a generator to create a variety of lat-lon's across the global
and tests a range of precision settings from 4 to 8"""
def generator():
while True:
trajectory = []
curr_t = 1582482600
for i in range(2, randint(4, 10)):
lat, lon, curr_t = (
uniform(-180.0, 180.0),
uniform(-180.0, 180.0),
curr_t + uniform(2, 60),
)
trajectory.append((lat, lon, curr_t))
yield trajectory
patience = 3 # seconds.
waypoints, okays = 0, 0
g = generator()
start = time.time()
while time.time() < start + patience:
precision = randint(4, 7)
wp = next(g)
waypoints += len(wp)
traj = trajectory.encode(wp, precision)
wp2 = trajectory.decode(traj, precision)
if wp == wp2:
okays += len(wp2)
else:
for idx, _ in enumerate(wp):
dx, dy, dt = (
abs(wp[idx][0] - wp2[idx][0]),
abs(wp[idx][1] - wp2[idx][1]),
abs(wp[idx][2] - wp2[idx][2]),
)
if (dx > 10**-(precision - 1) or dy > 10**-(precision - 1)
or dt > 10**-(precision - 1)):
print("idx={}, dx={}, dy={}, dt={}".format(
idx, dx, dy, dt))
else:
okays += 1
self.assertEqual(okays, waypoints)
print(
"encoded and decoded {0:.2f}% correctly for {1} waypoints @ {2} wp/sec"
.format(
100 * okays / float(waypoints),
waypoints,
round(waypoints / patience, 0),
))
def test_encode_and_decode_with_precision_6(self):
data = self.decoded
e = trajectory.encode(data, 6)
d = trajectory.decode(e, 6)
self.assertEqual(d, data)
def test_encode_with_precision_6(self):
e = trajectory.encode(self.decoded, 6)
self.assertEqual(e, self.encoded_precision_6)
def test_encode_and_decode(self):
data = self.decoded
e = trajectory.encode(data)
d = trajectory.decode(e)
self.assertEqual(d, data)
def test_encode(self):
e = trajectory.encode(self.decoded)
self.assertEqual(e, self.encoded)
def test_encode_rounding(self):
e = trajectory.encode([(0, 0.000006, 1582482601),
(0, 0.000002, 1582482601)])
self.assertEqual(e, "?A_ynpijgz~G?@?")