testsuite: add tests for {ms5,shaN}sum

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

testsuite/gunzip.tests

@@ -1,3 +1,3 @@
 #!/bin/sh
 
-. bunzip2.tests
+. ./bunzip2.tests

testsuite/md5sum.tests

@@ -0,0 +1,46 @@
+#!/bin/sh
+# Used by {ms5,shaN}sum
+
+# We pipe texts 0...999 bytes long, {md5,shaN}sum them,
+# then {md5,shaN}sum the resulting list.
+# Then we compare the result with expected result.
+#
+# Here are the expected results:
+# efe30c482e0b687e0cca0612f42ca29b
+# d41337e834377140ae7f98460d71d908598ef04f
+# 8e1d3ed57ebc130f0f72508446559eeae06451ae6d61b1e8ce46370cfb8963c3
+# fe413e0f177324d1353893ca0772ceba83fd41512ba63895a0eebb703ef9feac2fb4e92b2cb430b3bda41b46b0cb4ea8307190a5cc795157cfb680a9cd635d0f
+
+if ! test "$1"; then
+	set -- md5sum efe30c482e0b687e0cca0612f42ca29b
+fi
+
+sum="$1"
+expected="$2"
+
+mkdir testdir 2>/dev/null
+
+result=`(
+cd testdir || { echo "cannot cd testdir!" >&2; exit 1; }
+
+text="The quick brown fox jumps over the lazy dog"
+
+n=0
+while test $n -le 999; do
+	yes "$text" | head -c $n | "$sum"
+	: $((n++))
+done | "$sum"
+
+)`
+
+rm -rf testdir
+
+FAILCOUNT=0
+
+if test x"$result" = x"$expected  -"; then
+    echo "PASS: $sum"
+    exit 0
+fi
+
+echo "FAIL: $sum (r:$result exp:$expected)"
+exit 1

testsuite/sha1sum.tests

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+. ./md5sum.tests sha1sum d41337e834377140ae7f98460d71d908598ef04f

testsuite/sha256sum.tests

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+. ./md5sum.tests sha256sum 8e1d3ed57ebc130f0f72508446559eeae06451ae6d61b1e8ce46370cfb8963c3

testsuite/sha512sum.tests

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+. ./md5sum.tests sha512sum fe413e0f177324d1353893ca0772ceba83fd41512ba63895a0eebb703ef9feac2fb4e92b2cb430b3bda41b46b0cb4ea8307190a5cc795157cfb680a9cd635d0f