def test_1_nsmall(self):
"First 9 steps of the N-order curve in 2D"
# test first 9 steps of the n-order curve in 2D
tests = [((0, 0), 0), ((0, 1), 1), ((1, 0), 2), ((1, 1), 3),
((0, 2), 4), ((0, 3), 5), ((1, 2), 6), ((1, 3), 7),
((2, 0), 8)]
for c, outcome in tests:
self.assertEqual(nenc(c), outcome)
self.assertEqual(c, ndec(outcome, 2))
def test_nsmall(self):
"First 9 steps of the N-order curve in 2D"
# test first 9 steps of the n-order curve in 2D
tests = [((0, 0), 0), ((0, 1), 1), ((1, 0), 2), ((1, 1), 3),
((0, 2), 4), ((0, 3), 5), ((1, 2), 6), ((1, 3), 7),
((2, 0), 8)]
for c, outcome in tests:
assert nenc(c) == outcome
assert c == ndec(outcome, 2)
def test_2_bug_dims(self):
correct_sfc_keys = [
1125899906842623,
1125899906842624,
1125899906842625,
1125899906842626,
1125899906842627,
1125899906842628,
]
coords = [(33554431, 33554431), (0, 33554432), (0, 33554433),
(1, 33554432), (1, 33554433), (0, 33554434)]
#for enc, dec, in [(nenc, ndec), (henc, hdec)]:
for coord, correct_sfc_key in zip(coords, correct_sfc_keys):
# assert nenc(coord) == correct_sfc_key
self.assertEqual(nenc(coord), correct_sfc_key)
# assert ndec(correct_sfc_key, 2) == coord
self.assertEqual(ndec(correct_sfc_key, 2), coord)
def test_manual():
# key = 72057594037927936-1
key = 72057594037927936
key = 72057594037927936 + 2
n_dims = 4
assert ndec(key, n_dims) != (0, 0, 0, 0)
def test_4d(self):
key = 72057594037927936
n_dims = 4
assert ndec(key, n_dims) != (0, 0, 0, 0)
def test_3d(self):
"One 3D coordinate forth and back (H- and N-order)"
assert ndec(1903, 3) == (7, 9, 15)
assert nenc((7, 9, 15)) == 1903
assert henc((7, 9, 15)) == 2049
assert hdec(2049, 3) == (7, 9, 15)