Blame tests/p_gzip/20-gzip-test

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#!/bin/bash
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# Author: Athmane Madjoudj <athmanem@gmail.com>
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# Author: Christoph Galuschka <christoph.galuschka@chello.at>
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# Author: Iain Douglas <centos@1n6.org.uk>
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# Author: Rene Diepstraten <rene@renediepstraten.nl>
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function ExitFail {
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    t_Log "FAIL"
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    exit $FAIL
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}
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function cleanup {
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rm $FILE* &>/dev/null
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rm /var/tmp/gziptest/* &>/dev/null
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rmdir /var/tmp/gziptest &>/dev/null
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}
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t_Log "Running $0 - run a file through gzip,zcat and gunzip test."
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# create file
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FILE=/var/tmp/gzip-test.txt
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# Just in case earlier runs failed
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cleanup
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# Use the provided file as it has known contents and known name/timestamp
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# information.
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cp ./tests/p_gzip/gzip-test.txt.gz  /var/tmp
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#run file through gunzip
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t_Log "Test basic gunzip"
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gunzip $FILE.gz
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#checking file contents
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grep -q 'gzip-test of single file' $FILE || ExitFail
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# run file through gzip
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t_Log "Test basic gzip"
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gzip $FILE || ExitFail
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#just to make sure
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/bin/rm -rf $FILE
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#run file through zcat
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t_Log "Test basic zcat"
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zcat $FILE.gz | grep -q 'gzip-test of single file' || ExitFail
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# Basic tests complete - go a little deeper.
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# Check that we cannot overwrite an existing file
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t_Log "Check files will not be overwritten"
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touch $FILE
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echo | gunzip $FILE  &>/dev/null
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[ $? -ne 2 ]  && ExitFail
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echo | gzip $FILE  &>/dev/null
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[ $? -ne 2 ]  && ExitFail
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# Check that we can force files to be overwritten
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t_Log "Check force overwrite"
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gunzip -f $FILE.gz  || ExitFail
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touch $FILE.gz
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gzip -f $FILE || ExitFail
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# Check that -a is ignored 
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t_Log "Check -a is ignored as we're on CentOS"
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if [ $centos_ver == '5' ]
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  then
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  gunzip -a $FILE.gz 2>&1 | head -n 1 | grep  -q 'gunzip: option --ascii ignored on this system' || ExitFail
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elif [[ $centos_ver =~ ^(6|7)$ ]]
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  then
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  gunzip -a $FILE.gz 2>&1 | head -n 1 | grep  -q 'gzip: option --ascii ignored on this system' || ExitFail
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fi
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# Check -c writes to stdout
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t_Log "check -c writes to stdout"
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gzip -c $FILE | gunzip | grep -q 'gzip-test of single file' || ExitFail
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# Check the correct info is listed for -l the output is
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#         compressed        uncompressed  ratio uncompressed_name
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#                 59                  25  24.0% /var/tmp/gzip-test.txt
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#
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# The md5sum is 4cbaba004a815915904bd524ede5edec
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#
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# The 32-bit gzip behaves differently:
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# 
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#         compressed        uncompressed  ratio uncompressed_name
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#                 59                  25  -8.0% /var/tmp/gzip-test.txt
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#
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# The md5sum is caf6dee7a56022a840316520134967a4
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t_Log "Check the output of -l"
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gzip $FILE
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mdhash=$(gzip -l $FILE.gz | md5sum | cut -f1 -d' ')
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[ "$mdhash" == "4cbaba004a815915904bd524ede5edec" -o "$mdhash" == "caf6dee7a56022a840316520134967a4" ] || ExitFail
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# Check that -q works which removes the header information from -l
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t_Log "Check -q reduced the output verbosity"
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gzip -ql $FILE | grep -qv "ratio" || ExitFail
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# Check -v gives us more information - we shouls see the files
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# CRC which is d14bbb86
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t_Log "Check -v increases verbosity"
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gzip -lv $FILE | grep -q "d14bbb86" || ExitFail
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# Check -n and -N work correctly. The original datestamp on the
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# test file is '2010-11-22 13:11' gzip-test.txt
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# At this point we shouldn't see the original timestamp if the default 
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# -n to gunzip and -N to gzip are working.
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t_Log "check -n and -N work correctly"
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TZ_SAVE=$TZ
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export TZ=UTC
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gunzip $FILE.gz
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ls -l --time-style=+"%F %R" $FILE | grep -q '2010-11-22 13:11' &&  ExitFail
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# Reset the test file with a different name
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# the file should gunzup as gzip-test.1
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cp ./tests/p_gzip/gzip-test.txt.gz /var/tmp/gzip-test.txt.1.gz
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gunzip $FILE.1.gz
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[ -e "$FILE.1" ] || ExitFail
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# Reset the test file with a different name
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cp ./tests/p_gzip/gzip-test.txt.gz /var/tmp/gzip-test.txt.1.gz
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# The file should gunzip with it's original name and timestamp.
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gunzip -f -N $FILE.1.gz
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ls -l $FILE --time-style=+"%F %R" | grep  -q '2010-11-22 13:11' || ExitFail
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export TZ=$TZ_SAVE
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# Check that -t works and detects a damaged file
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t_Log "Check -t can detect a corrupt file"
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gzip $FILE
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echo -ne \\x34 | dd conv=notrunc bs=1 count=1 seek=27  of=$FILE.gz &>/dev/null
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gzip -t $FILE.gz 2>&1 | grep -qv "data--crc error" || ExitFail
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# Check we can use a custon suffix .iain will do ;)
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t_Log "Check that a custom suffix can be used -S"
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cp ./tests/p_gzip/gzip-test.txt.gz /var/tmp/gzip-test.txt.gz
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gunzip $FILE.gz
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gzip -S .iain $FILE
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[ -e $FILE.iain ] || ExitFail
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gunzip -S .iain $FILE || ExitFail
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# Check that -r works - create a directory, populate it then just pass
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# the dirname to gzip - it should zip all the files.
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t_Log "Check that -r works "
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mkdir /var/tmp/gziptest
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touch /var/tmp/gziptest/a
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touch /var/tmp/gziptest/b
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gzip -r /var/tmp/gziptest
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[ "$(ls /var/tmp/gziptest/*.gz | wc -l)" -eq "2" ] || ExitFail
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# Text the different compression levels
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t_Log "Check different compression levels"
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gzip -1 $FILE.1   # 61 bytes
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gzip -9 $FILE     # 59 bytes
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[ "$(stat -c %s $FILE.gz)" -ne "$(stat -c %s $FILE.1.gz)" ] || ExitFail
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# Multiple input files 
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t_Log "Multiple input files on the command line"
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# Multiple files on one command line
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gunzip $FILE.1.gz $FILE || ExitFail
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# Don't specify the .gz extension
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t_Log "No file extension supplied for gunzip"
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gzip $FILE $FILE.1  || ExitFail
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# Compress the file then get gunzip to uncompress it, the file needs
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# to be larger for compress to work
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t_Log "Check gunzip can handle .Z files"
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gunzip $FILE 
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ls -l /var/tmp >>$FILE
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compress $FILE || ExitFail
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gunzip $FILE.Z || ExitFail
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# Zip the file then get gunzip to uncompress it.
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t_Log "Check gunzip can handle .zip files"
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zip $FILE.zip $FILE  &>/dev/null || ExitFail
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gunzip -f  -S .zip $FILE.zip  || ExitFail
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# Handle .tgz correctly
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t_Log "Check gunzip creates a .tar file from .tgz"
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tar -czf $FILE.tgz $FILE &>/dev/null
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gunzip $FILE.tgz
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[ -e $FILE.tar ] 
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t_CheckExitStatus $?
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#tar the file rename it to .tgz 
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#reversing changes
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cleanup