62 lines
1.6 KiB
Bash
62 lines
1.6 KiB
Bash
#!/bin/sh
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# Test that concatenated gz files are unpacking correctly.
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# It also tests that unpacking in general is working right.
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# Since zip code has many corner cases, run it for a few hours
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# to get a decent coverage (200000 tests or more).
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gzip="gzip"
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gunzip="../busybox gunzip"
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# Or the other way around:
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#gzip="../busybox gzip"
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#gunzip="gunzip"
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c=0
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i=$PID
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while true; do
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c=$((c+1))
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# RANDOM is not very random on some shells. Spice it up.
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# 100003 is prime
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len1=$(( (((RANDOM*RANDOM)^i) & 0x7ffffff) % 100003 ))
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i=$((i * 1664525 + 1013904223))
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len2=$(( (((RANDOM*RANDOM)^i) & 0x7ffffff) % 100003 ))
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# Just using urandom will make gzip use method 0 (store) -
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# not good for test coverage!
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cat /dev/urandom | while true; do read junk; echo "junk $c $i $junk"; done \
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| dd bs=$len1 count=1 >z1 2>/dev/null
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cat /dev/urandom | while true; do read junk; echo "junk $c $i $junk"; done \
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| dd bs=$len2 count=1 >z2 2>/dev/null
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$gzip <z1 >zz.gz
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$gzip <z2 >>zz.gz
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$gunzip -c zz.gz >z9 || {
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echo "Exitcode $?"
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exit
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}
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sum=`cat z1 z2 | md5sum`
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sum9=`md5sum <z9`
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test "$sum" == "$sum9" || {
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echo "md5sums don't match"
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exit
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}
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echo "Test $c ok: len1=$len1 len2=$len2 sum=$sum"
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sum=`cat z1 z2 z1 z2 | md5sum`
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rm z1.gz z2.gz 2>/dev/null
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$gzip z1
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$gzip z2
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cat z1.gz z2.gz z1.gz z2.gz >zz.gz
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$gunzip -c zz.gz >z9 || {
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echo "Exitcode $? (2)"
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exit
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}
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sum9=`md5sum <z9`
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test "$sum" == "$sum9" || {
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echo "md5sums don't match (1)"
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exit
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}
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echo "Test $c ok: len1=$len1 len2=$len2 sum=$sum (2)"
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done
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