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Use reading of comments to test saving comments

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This commit is contained in:
Andrew Murray 2023-03-23 17:53:35 +11:00
parent 176b2a2000
commit d3923f7142
1 changed files with 14 additions and 14 deletions
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28
Tests/test_file_jpeg2k.py
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@ -372,6 +372,20 @@ def test_comment():
pass pass
def test_save_comment():
comment = "Created by Pillow"
out = BytesIO()
test_card.save(out, "JPEG2000", comment=comment)
out.seek(0)
with Image.open(out) as im:
assert im.info["comment"] == b"Created by Pillow"
too_long_comment = " " * 65532
with pytest.raises(ValueError):
test_card.save(out, "JPEG2000", comment=too_long_comment)
@pytest.mark.parametrize( @pytest.mark.parametrize(
"test_file", "test_file",
[ [
@ -391,20 +405,6 @@ def test_crashes(test_file):
pass pass
def test_custom_comment():
output_stream = BytesIO()
unique_comment = "This is a unique comment, which should be found below"
test_card.save(output_stream, "JPEG2000", comment=unique_comment)
output_stream.seek(0)
data = output_stream.read()
# Lazy method to determine if the comment is in the image generated
assert bytes(unique_comment, "utf-8") in data
too_long_comment = " " * 65532
with pytest.raises(ValueError):
test_card.save(output_stream, "JPEG2000", comment=too_long_comment)
@skip_unless_feature_version("jpg_2000", "2.4.0") @skip_unless_feature_version("jpg_2000", "2.4.0")
def test_plt_marker(): def test_plt_marker():
# Search the start of the codesteam for the PLT box (id 0xFF58) # Search the start of the codesteam for the PLT box (id 0xFF58)