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from random import uniform, randint
import time
import polyline
def test_decode_multiple_points():
d = polyline.decode('gu`wFnfys@???nKgE??gE?????oK????fE??fE')
assert d == [
(40.641, -8.654),
(40.641, -8.654),
(40.641, -8.656),
(40.642, -8.656),
(40.642, -8.655),
(40.642, -8.655),
(40.642, -8.655),
(40.642, -8.653),
(40.642, -8.653),
(40.642, -8.653),
(40.641, -8.653),
(40.641, -8.654)
]
def test_decode_multiple_points_precision():
d = polyline.decode('_epolA~ieoOnF??~{Bo}@??o}@?????_|B????n}@??n}@', 6)
assert d == [
(40.64112, -8.654),
(40.641, -8.654),
(40.641, -8.656),
(40.642, -8.656),
(40.642, -8.655),
(40.642, -8.655),
(40.642, -8.655),
(40.642, -8.653),
(40.642, -8.653),
(40.642, -8.653),
(40.641, -8.653),
(40.641, -8.654)
]
def test_decode_official_example():
d = polyline.decode('_p~iF~ps|U_ulLnnqC_mqNvxq`@')
assert d == [
(38.500, -120.200),
(40.700, -120.950),
(43.252, -126.453)
]
def test_decode_geojson():
d = polyline.decode('_p~iF~ps|U_ulLnnqC_mqNvxq`@', geojson=True)
assert d == [
(-120.200, 38.500),
(-120.950, 40.700),
(-126.453, 43.252)
]
def test_decode_official_example_precision():
d = polyline.decode('_izlhA~rlgdF_{geC~ywl@_kwzCn`{nI', 6)
assert d == [
(38.500, -120.200),
(40.700, -120.950),
(43.252, -126.453)
]
def test_decode_single_point():
d = polyline.decode('gu`wFf`ys@')
assert d == [
(40.641, -8.653)
]
def test_decode_single_point_precision():
d = polyline.decode('o}oolAnkcoO', 6)
assert d == [
(40.641, -8.653)
]
def test_encode_multiple_points():
e = polyline.encode([
(40.641, -8.654),
(40.641, -8.654),
(40.641, -8.656),
(40.642, -8.656),
(40.642, -8.655),
(40.642, -8.655),
(40.642, -8.655),
(40.642, -8.653),
(40.642, -8.653),
(40.642, -8.653),
(40.641, -8.653),
(40.641, -8.654)
])
assert e == 'gu`wFnfys@???nKgE??gE?????oK????fE??fE'
def test_encode_multiple_points_precision():
e = polyline.encode([
(40.64112345, -8.654),
(40.641, -8.654),
(40.641, -8.656),
(40.642, -8.656),
(40.642, -8.655),
(40.642, -8.655),
(40.642, -8.655),
(40.642, -8.653),
(40.642, -8.653),
(40.642, -8.653),
(40.641, -8.653),
(40.641, -8.654)
], 6)
assert e == 'eepolA~ieoOtF??~{Bo}@??o}@?????_|B????n}@??n}@'
def test_encode_official_example():
e = polyline.encode([
(38.500, -120.200),
(40.700, -120.950),
(43.252, -126.453)
])
assert e == '_p~iF~ps|U_ulLnnqC_mqNvxq`@'
def test_encode_geojson():
e = polyline.encode([
(-120.200, 38.500),
(-120.950, 40.700),
(-126.453, 43.252)
], geojson=True)
assert e == '_p~iF~ps|U_ulLnnqC_mqNvxq`@'
def test_encode_official_example_precision():
e = polyline.encode([
(38.500, -120.200),
(40.700, -120.950),
(43.252, -126.453)
], 6)
assert e == '_izlhA~rlgdF_{geC~ywl@_kwzCn`{nI'
def test_encode_single_point():
e = polyline.encode([
(40.64155, -8.65344)
])
assert e == 'ux`wF~bys@'
e = polyline.encode([
(40.641552, -8.653441)
])
assert e == 'ux`wF~bys@'
def test_encode_single_point_rounding():
e = polyline.encode([
(0, 0.000006),
(0, 0.000002)
])
assert e == '?A?@'
def test_rounding_py3_match_py2():
e = polyline.encode([
(36.05322, -112.084004),
(36.053573, -112.083914),
(36.053845, -112.083965)])
assert e == 'ss`{E~kbkTeAQw@J'
def test_encode_single_point_precision():
e = polyline.encode([
(40.641123, -8.653321)
], 6)
assert e == 'eepolAp_doO'
e = polyline.encode([
(40.6411233123, -8.6533214234)
], 6)
assert e == 'eepolAp_doO'
def test_a_variety_of_precisions():
"""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:
coords = []
for i in range(2, randint(4, 10)):
lat, lon = uniform(-180.0, 180.0), uniform(-180.0, 180.0)
coords.append((lat, lon))
yield coords
patience = 3 # seconds.
waypoints, okays = 0, 0
g = generator()
start = time.time()
while time.time() < start + patience:
precision = randint(4, 8)
wp = next(g)
waypoints += len(wp)
poly = polyline.encode(wp, precision)
wp2 = polyline.decode(poly, precision)
if wp == wp2:
okays += len(wp2)
else:
for idx, _ in enumerate(wp):
dx, dy = abs(wp[idx][0] - wp2[idx][0]), abs(wp[idx][1] - wp2[idx][1])
if dx > 10 ** -(precision - 1) or dy > 10 ** -(precision - 1):
print(f"idx={idx}, dx={dx}, dy={dy}")
else:
okays += 1
assert okays == waypoints
print(
f"encoded and decoded {100 * okays / float(waypoints):.2f}% correctly for {waypoints} "
f"waypoints @ {round(waypoints / patience, 0)} wp/sec")
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