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Always return fresh not-yet-loaded image for hopper(None)

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This commit is contained in:
Hugo van Kemenade 2024-03-31 15:07:15 +03:00
parent 199bff369e
commit ed5cd18d9c
1 changed files with 8 additions and 6 deletions
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14
Tests/helper.py
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@ -255,20 +255,22 @@ def hopper(mode: str | None = None) -> Image.Image:
# Use caching to reduce reading from disk, but return a copy
# so that the cached image isn't modified by the tests
# (for fast, isolated, repeatable tests).
return _cached_hopper(mode).copy()
@lru_cache(maxsize=None)
def _cached_hopper(mode: str | None = None) -> Image.Image:
if mode is None:
# Always return fresh not-yet-loaded version of image.
# Operations on not-yet-loaded images is separate class of errors
# what we should catch.
return Image.open("Tests/images/hopper.ppm")
return _cached_hopper(mode).copy()
@lru_cache(maxsize=None)
def _cached_hopper(mode: str | None = None) -> Image.Image:
if mode == "F":
im = _cached_hopper("L").convert(mode)
im = hopper("L").convert(mode)
else:
im = _cached_hopper().convert(mode)
im = hopper().convert(mode)
return im