blob: b8e31bf9737d17cc3e84b4311568067edfea6c76
1 | #!/bin/sh |
2 | # Test that concatenated gz files are unpacking correctly. |
3 | # It also tests that unpacking in general is working right. |
4 | # Since zip code has many corner cases, run it for a few hours |
5 | # to get a decent coverage (200000 tests or more). |
6 | |
7 | gzip="gzip" |
8 | gunzip="../busybox gunzip" |
9 | # Or the other way around: |
10 | #gzip="../busybox gzip" |
11 | #gunzip="gunzip" |
12 | |
13 | c=0 |
14 | i=$PID |
15 | while true; do |
16 | c=$((c+1)) |
17 | |
18 | # RANDOM is not very random on some shells. Spice it up. |
19 | # 100003 is prime |
20 | len1=$(( (((RANDOM*RANDOM)^i) & 0x7ffffff) % 100003 )) |
21 | i=$((i * 1664525 + 1013904223)) |
22 | len2=$(( (((RANDOM*RANDOM)^i) & 0x7ffffff) % 100003 )) |
23 | |
24 | # Just using urandom will make gzip use method 0 (store) - |
25 | # not good for test coverage! |
26 | cat /dev/urandom | while true; do read junk; echo "junk $c $i $junk"; done \ |
27 | | dd bs=$len1 count=1 >z1 2>/dev/null |
28 | cat /dev/urandom | while true; do read junk; echo "junk $c $i $junk"; done \ |
29 | | dd bs=$len2 count=1 >z2 2>/dev/null |
30 | |
31 | $gzip <z1 >zz.gz |
32 | $gzip <z2 >>zz.gz |
33 | $gunzip -c zz.gz >z9 || { |
34 | echo "Exitcode $?" |
35 | exit |
36 | } |
37 | sum=`cat z1 z2 | md5sum` |
38 | sum9=`md5sum <z9` |
39 | test "$sum" == "$sum9" || { |
40 | echo "md5sums don't match" |
41 | exit |
42 | } |
43 | echo "Test $c ok: len1=$len1 len2=$len2 sum=$sum" |
44 | |
45 | sum=`cat z1 z2 z1 z2 | md5sum` |
46 | rm z1.gz z2.gz 2>/dev/null |
47 | $gzip z1 |
48 | $gzip z2 |
49 | cat z1.gz z2.gz z1.gz z2.gz >zz.gz |
50 | $gunzip -c zz.gz >z9 || { |
51 | echo "Exitcode $? (2)" |
52 | exit |
53 | } |
54 | sum9=`md5sum <z9` |
55 | test "$sum" == "$sum9" || { |
56 | echo "md5sums don't match (1)" |
57 | exit |
58 | } |
59 | |
60 | echo "Test $c ok: len1=$len1 len2=$len2 sum=$sum (2)" |
61 | done |
62 |