def test_slice_idx_generator_raises():
"""Test convert.slice_idx_generator raises StopIteration.
The given shape (4305, 9791) breaks iterative schemes that don't properly
seperate tiles. Was a bug.
"""
shape = (250, 250)
zoom = 5
tile_size = 256
with pytest.raises(StopIteration) as excinfo:
given = convert.slice_idx_generator(shape, zoom, tile_size)
assert excinfo
def test_slice_idx_generator_z2():
"""Test convert.slice_idx_generator at zoom level 2.
The given shape (4305, 9791) breaks iterative schemes that don't properly
seperate tiles. Was a bug.
"""
shape = (4305, 9791)
zoom = 2
tile_size = 256
given = convert.slice_idx_generator(shape, zoom, tile_size)
expected = helpers.get_slice_idx_generator_solution(zoom)
comparable_given = set(map(helpers.covert_idx_to_hashable_tuple, given))
comparable_expected = set(
map(helpers.covert_idx_to_hashable_tuple, expected))
assert comparable_given == comparable_expected