generatesFiles() reports incorrect message if file is present but content doesn't match

[ZacSweers]

If a matching file is found but the content just doesn't match, generatesFiles() will report that no matching file was found. While maybe technically correct if "matching" in this case includes the content, it's misleading in practice since the target file name was found and the content mismatch is the interesting bit.

[netdpb]

Have you tried using the newer API? Instead of

assertThat(source1, source2).compilesWithoutWarnings().and().generatesFiles(expected1, expected2);

try

Compilation compilation = javac().compile(source1, source2);
assertThat(compilation).generatedFile(SOURCE_OUTPUT, "path/to/file").contentsAsUtfString().isEqualTo(expected);

(or one of the other APIs to check the contents of the files).