async def test_cog_get_overview_level(create_cog_reader, width, height):
async with create_cog_reader(TEST_DATA[0]) as cog:
ovr = cog._get_overview_level(cog.bounds, width, height)
with rasterio.open(TEST_DATA[0]) as src:
expected_ovr = rio_tiler_utils.get_overview_level(
src, src.bounds, height, width)
# Our index for source data is 0 while rio tiler uses -1
expected_ovr = 0 if expected_ovr == -1 else expected_ovr
assert ovr == expected_ovr
def test_ovr_level():
"""Should return the correct overview level."""
with rasterio.open(COG_DST) as src_dst:
# raw/-1: 2667x2658 0: 1329x1334, 1: 665x667, 2: 333x334, 3: 167x167
assert (utils.get_overview_level(src_dst,
src_dst.bounds,
100,
100,
dst_crs=src_dst.crs) == 3)
assert (utils.get_overview_level(src_dst,
src_dst.bounds,
200,
200,
dst_crs=src_dst.crs) == 2)
assert (utils.get_overview_level(src_dst,
src_dst.bounds,
500,
500,
dst_crs=src_dst.crs) == 1)
assert (utils.get_overview_level(src_dst,
src_dst.bounds,
800,
800,
dst_crs=src_dst.crs) == 0)
assert (utils.get_overview_level(src_dst,
src_dst.bounds,
1500,
1500,
dst_crs=src_dst.crs) == -1)
assert (utils.get_overview_level(src_dst,
src_dst.bounds,
3000,
3000,
dst_crs=src_dst.crs) == -1)