test_one_file    1479 contrib/libtests/pngimage.c       test_one_file(dp, file);
test_one_file    3645 contrib/libtests/pngstest.c                   if (ich > 0 && !test_one_file(buffer, &formats, opts,
test_one_file    3670 contrib/libtests/pngstest.c          else if (!test_one_file(arg, &formats, opts, stride_extra, log_pass))
test_one_file    1808 pngtest.c               kerror = test_one_file(argv[i], outname);
test_one_file    1891 pngtest.c               kerror = test_one_file(inname, outname);