def test_validation():
h = '8a28308280fffff' # invalid hex
with pytest.raises(H3CellError):
h3.h3_get_base_cell(h)
with pytest.raises(H3CellError):
h3.h3_get_resolution(h)
with pytest.raises(H3CellError):
h3.h3_to_parent(h, 9)
with pytest.raises(H3CellError):
h3.h3_distance(h, h)
with pytest.raises(H3CellError):
h3.k_ring(h, 1)
with pytest.raises(H3CellError):
h3.hex_ring(h, 1)
with pytest.raises(H3CellError):
h3.h3_to_children(h, 11)
with pytest.raises(H3CellError):
h3.compact({h})
with pytest.raises(H3CellError):
h3.uncompact({h}, 10)
def test_uncompact_cell_input():
# `uncompact` takes in a collection of cells, not a single cell.
# Since a python string is seen as a Iterable collection,
# inputting a single cell string can raise weird errors.
# Ensure we get a reasonably helpful answer
with pytest.raises(H3CellError):
h3.uncompact('8001fffffffffff', 1)
def test_uncompact():
h_uncomp, h_comp, res = test_compact()
out = h3.uncompact(h_comp, res)
assert out == h_uncomp
def test_cell_perimiter_calculations():
resolutions = [0, 1]
for r in resolutions:
cells = h3.uncompact(h3.get_res0_indexes(), r)
for h in cells:
for unit in ['rads', 'm', 'km']:
v1 = cell_perimiter1(h, unit)
v2 = cell_perimiter2(h, unit)
assert v1 == pytest.approx(v2)
def test_compact_and_uncompact():
geo = {
'type': 'Polygon',
'coordinates': [
[
[37.813318999983238, -122.4089866999972145],
[37.7866302000007224, -122.3805436999997056],
[37.7198061999978478, -122.3544736999993603],
[37.7076131999975672, -122.5123436999983966],
[37.7835871999971715, -122.5247187000021967],
[37.8151571999998453, -122.4798767000009008],
]
]
}
hexes = h3.polyfill(geo, 9)
compact_hexes = h3.compact(hexes)
assert len(compact_hexes) == 209
uncompact_hexes = h3.uncompact(compact_hexes, 9)
assert len(uncompact_hexes) == 1253
def test_uncompact_error():
hexagons = [h3.geo_to_h3(37, -122, 10)]
with pytest.raises(Exception):
h3.uncompact(hexagons, 5)
def test_compact_and_uncompact_nothing():
assert h3.compact([]) == set()
assert h3.uncompact([], 9) == set()