[3320] | 1 | #!/bin/sh
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| 2 | # Test that concatenated gz files are unpacking correctly.
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| 3 | # It also tests that unpacking in general is working right.
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| 4 | # Since zip code has many corner cases, run it for a few hours
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| 5 | # to get a decent coverage (200000 tests or more).
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| 6 |
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| 7 | gzip="gzip"
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| 8 | gunzip="../busybox gunzip"
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| 9 | # Or the other way around:
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| 10 | #gzip="../busybox gzip"
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| 11 | #gunzip="gunzip"
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| 12 |
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| 13 | c=0
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| 14 | i=$PID
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| 15 | while true; do
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| 16 | c=$((c+1))
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| 17 |
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| 18 | # RANDOM is not very random on some shells. Spice it up.
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| 19 | # 100003 is prime
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| 20 | len1=$(( (((RANDOM*RANDOM)^i) & 0x7ffffff) % 100003 ))
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| 21 | i=$((i * 1664525 + 1013904223))
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| 22 | len2=$(( (((RANDOM*RANDOM)^i) & 0x7ffffff) % 100003 ))
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| 23 |
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| 24 | # Just using urandom will make gzip use method 0 (store) -
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| 25 | # not good for test coverage!
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| 26 | cat /dev/urandom | while true; do read junk; echo "junk $c $i $junk"; done \
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| 27 | | dd bs=$len1 count=1 >z1 2>/dev/null
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| 28 | cat /dev/urandom | while true; do read junk; echo "junk $c $i $junk"; done \
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| 29 | | dd bs=$len2 count=1 >z2 2>/dev/null
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| 30 |
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| 31 | $gzip <z1 >zz.gz
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| 32 | $gzip <z2 >>zz.gz
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| 33 | $gunzip -c zz.gz >z9 || {
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| 34 | echo "Exitcode $?"
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| 35 | exit
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| 36 | }
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| 37 | sum=`cat z1 z2 | md5sum`
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| 38 | sum9=`md5sum <z9`
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| 39 | test "$sum" == "$sum9" || {
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| 40 | echo "md5sums don't match"
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| 41 | exit
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| 42 | }
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| 43 | echo "Test $c ok: len1=$len1 len2=$len2 sum=$sum"
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| 44 |
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| 45 | sum=`cat z1 z2 z1 z2 | md5sum`
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| 46 | rm z1.gz z2.gz 2>/dev/null
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| 47 | $gzip z1
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| 48 | $gzip z2
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| 49 | cat z1.gz z2.gz z1.gz z2.gz >zz.gz
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| 50 | $gunzip -c zz.gz >z9 || {
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| 51 | echo "Exitcode $? (2)"
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| 52 | exit
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| 53 | }
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| 54 | sum9=`md5sum <z9`
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| 55 | test "$sum" == "$sum9" || {
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| 56 | echo "md5sums don't match (1)"
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| 57 | exit
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| 58 | }
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| 59 |
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| 60 | echo "Test $c ok: len1=$len1 len2=$len2 sum=$sum (2)"
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| 61 | done
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