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ce1f1f001e
This adds a new configuration file, 'contrib/conftest/basic.dfa' which disables unused APIs on a test Linux-based system. So support the configuration several fixes were necessary in the test programs so that the tests are skipped correctly when APIs are not available. The configuration has been tested on a range of common Linux apps including web browser code (qtwebengine), image processing code (e.g. ImageMagick) and general display code (X11, Qt5 and Qt6, KDE). Overall this first step reduces libpng linked code and data size to about 2/3 of the full configuration. To use the new test simply copy basic.dfa to 'pngusr.dfa' in the root of the source directory and build. Signed-off-by: John Bowler <jbowler@acm.org>
108 lines
3.6 KiB
Bash
Executable File
108 lines
3.6 KiB
Bash
Executable File
#!/bin/sh
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st=0 # exit status (set to 1 if a test fails)
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skipped=
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fail="**FAIL**"
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skip="**SKIP**"
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success=" SUCCESS"
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TEST(){
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# Try to make the log file easier to read:
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echo "=============== pngtest $* ===================="
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./pngtest "$@"
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status=$?
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case "$status" in
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0) test_status="$success";;
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77) test_status="$skip"
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skipped=1;;
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*) test_status="$fail"
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st="$status";;
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esac
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echo "===============$test_status $* ===================="
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return "$status"
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}
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# The "standard" test
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TEST --strict "${srcdir}"/pngtest.png
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# Various crashers
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# Use --relaxed because some come from fuzzers that don't maintain CRCs
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TEST --relaxed "${srcdir}"/contrib/testpngs/crashers/badcrc.png
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# Use --xfail because there is no reliable way of disabling these errors
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# (Adler32 checking cannot be switched off on all builds and there is no
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# provision for turning the other checks into warnings.)
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TEST --xfail "${srcdir}"/contrib/testpngs/crashers/badadler.png
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TEST --xfail "${srcdir}"/contrib/testpngs/crashers/bad_iCCP.png
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TEST --xfail "${srcdir}"/contrib/testpngs/crashers/empty_ancillary_chunks.png
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for file in "${srcdir}"/contrib/testpngs/crashers/huge_*_chunk.png
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do
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TEST --xfail "$file"
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done
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for file in "${srcdir}"/contrib/testpngs/crashers/huge_*safe_to_copy.png
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do
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TEST --xfail "$file"
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done
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TEST --xfail "${srcdir}"/contrib/testpngs/crashers/huge_IDAT.png
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# Regression tests for required warnings (or errors):
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check_stdout(){
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# $1: the test file (a bad PNG which must produce a warning, etc)
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# $2: a string which must occur at the end of line on stdout for success
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# result: an error message on descriptor 3 if the string is NOT found
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#
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# WARNING: when this script is executed on MSYS2 (Windows Cygwin variant)
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# pngtest outputs lines terminated with <cr><lf> however the MSYS2 shell
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# expects <lf> (\n) terminated lines so the <cr> ends up in the shell
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# variable 'line' below. The pattern matching ignores this because of the
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# '*' at the end of the pattern match.
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found=
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skipped=
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while read line
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do
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case "$line" in
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*"$2"*) found=1;;
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*"TEST SKIPPED"*) skipped=1;;
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esac
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echo "$line" # preserve the original output verbatim
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done
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# output the missing warning on descriptor 3:
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test -z "$found" -a -z "$skipped" && echo "$1: $2" >&3
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}
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# NOTE: traditionally the Bourne shell executed the last element in a pipe
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# sequence in the original shell so it could set variables in the original
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# shell however this is not reliable and doesn't work in bash.
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#
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# It *is* reliable to use the actual exit status of the last command in
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# the pipeline.
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exec 4>&1 # original stdout - the log file
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{
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exec 3>&1 # stdout is the pipe at this point
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fail=" FAIL(EXPECTED)" # runtime scope
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success=" SUCCESS(UNEXPECTED)" # there should be a write error
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for file in "${srcdir}"/contrib/testpngs/badpal/*.png
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do
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# The exit code is ignored here, the test is that the particular errors
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# (warnings) are produced. The original output still ends up in the log
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# file.
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{
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TEST "$file"
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test "$?" -eq 77 && echo "TEST SKIPPED"
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} |
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check_stdout "$file" 'IDAT: Read palette index exceeding num_palette' |
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check_stdout "$file" 'Wrote palette index exceeding num_palette' >&4
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done
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exec 3>&-
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} | {
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# This may not be a sub-shell, if it is 'st' is undefined and the exit
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# just ends up as 'exit'.
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while read error
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do
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echo "MISSING REPORT: $error"
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st=1
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done
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exit $st
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} || st=$?
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test "$st" -gt 0 && exit "$st"
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test -n "$skipped" && exit 77
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exit 0
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