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authorGravatar Denis Vlasenko <vda.linux@googlemail.com>2007-10-05 15:27:03 +0000
committerGravatar Denis Vlasenko <vda.linux@googlemail.com>2007-10-05 15:27:03 +0000
commitd21f596ddb294bdb65623ba1d0e49b17d0829229 (patch)
treede67fa170b41cba4a4f9696c36a6ef85581b94b3 /archival/bbunzip_test.sh
parent5dd8a0366578746bb991b0e87a60d8d442bd8d87 (diff)
downloadbusybox-d21f596ddb294bdb65623ba1d0e49b17d0829229.tar.gz
busybox-d21f596ddb294bdb65623ba1d0e49b17d0829229.tar.bz2
add tests for gunzip
Diffstat (limited to 'archival/bbunzip_test.sh')
-rw-r--r--archival/bbunzip_test.sh61
1 files changed, 61 insertions, 0 deletions
diff --git a/archival/bbunzip_test.sh b/archival/bbunzip_test.sh
new file mode 100644
index 000000000..b8e31bf97
--- /dev/null
+++ b/archival/bbunzip_test.sh
@@ -0,0 +1,61 @@
+#!/bin/sh
+# Test that concatenated gz files are unpacking correctly.
+# It also tests that unpacking in general is working right.
+# Since zip code has many corner cases, run it for a few hours
+# to get a decent coverage (200000 tests or more).
+
+gzip="gzip"
+gunzip="../busybox gunzip"
+# Or the other way around:
+#gzip="../busybox gzip"
+#gunzip="gunzip"
+
+c=0
+i=$PID
+while true; do
+ c=$((c+1))
+
+ # RANDOM is not very random on some shells. Spice it up.
+ # 100003 is prime
+ len1=$(( (((RANDOM*RANDOM)^i) & 0x7ffffff) % 100003 ))
+ i=$((i * 1664525 + 1013904223))
+ len2=$(( (((RANDOM*RANDOM)^i) & 0x7ffffff) % 100003 ))
+
+ # Just using urandom will make gzip use method 0 (store) -
+ # not good for test coverage!
+ cat /dev/urandom | while true; do read junk; echo "junk $c $i $junk"; done \
+ | dd bs=$len1 count=1 >z1 2>/dev/null
+ cat /dev/urandom | while true; do read junk; echo "junk $c $i $junk"; done \
+ | dd bs=$len2 count=1 >z2 2>/dev/null
+
+ $gzip <z1 >zz.gz
+ $gzip <z2 >>zz.gz
+ $gunzip -c zz.gz >z9 || {
+ echo "Exitcode $?"
+ exit
+ }
+ sum=`cat z1 z2 | md5sum`
+ sum9=`md5sum <z9`
+ test "$sum" == "$sum9" || {
+ echo "md5sums don't match"
+ exit
+ }
+ echo "Test $c ok: len1=$len1 len2=$len2 sum=$sum"
+
+ sum=`cat z1 z2 z1 z2 | md5sum`
+ rm z1.gz z2.gz 2>/dev/null
+ $gzip z1
+ $gzip z2
+ cat z1.gz z2.gz z1.gz z2.gz >zz.gz
+ $gunzip -c zz.gz >z9 || {
+ echo "Exitcode $? (2)"
+ exit
+ }
+ sum9=`md5sum <z9`
+ test "$sum" == "$sum9" || {
+ echo "md5sums don't match (1)"
+ exit
+ }
+
+ echo "Test $c ok: len1=$len1 len2=$len2 sum=$sum (2)"
+done