MarcZX10 12131a5c98 test(Decoder): require that a truncated tRNS PNG decodes to nothing ...

RequireTruncatedTransparency called Decode and ignored the result, so any
result passed. Assert that Decode returns no image for the input cut in the
middle of its tRNS chunk, which is what the decoder returns today.

Checked with a mutant Decode that returns an image for this input: the test
aborts on the mutant, and the previous version of the test passes it.

2026-10-31 21:49:04 +00:00

..

Png.cpp

test(Decoder): require that a truncated tRNS PNG decodes to nothing

2026-10-31 21:49:04 +00:00