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from __future__ import annotations
from .helper import hopper
def test_histogram() -> None:
def histogram(mode: str) -> tuple[int, int, int]:
h = hopper(mode).histogram()
return len(h), min(h), max(h)
assert histogram("1") == (256, 0, 10994)
assert histogram("L") == (256, 0, 662)
assert histogram("LA") == (512, 0, 16384)
assert histogram("La") == (512, 0, 16384)
assert histogram("I") == (256, 0, 662)
assert histogram("F") == (256, 0, 662)
assert histogram("P") == (256, 0, 1551)
assert histogram("PA") == (512, 0, 16384)
assert histogram("RGB") == (768, 4, 675)
assert histogram("RGBA") == (1024, 0, 16384)
assert histogram("CMYK") == (1024, 0, 16384)
assert histogram("YCbCr") == (768, 0, 1908)
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