t5400 send-pack test: try a bit more nontrivial transfer.

Not that this reveals anything new, but I did test_tick shell
function in test-lib and found it rather cute and nice.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

t/t5400-send-pack.sh

@@ -8,38 +8,63 @@ test_description='See why rewinding head breaks send-pack
 '
 . ./test-lib.sh
 
-touch cpio-test
-test_expect_success 'working cpio' 'echo cpio-test | cpio -o > /dev/null'
-
-cnt='1'
+cnt=64
 test_expect_success setup '
+	test_tick &&
+	mkdir mozart mozart/is &&
+	echo "Commit #0" >mozart/is/pink &&
+	git-update-index --add mozart/is/pink &&
 	tree=$(git-write-tree) &&
 	commit=$(echo "Commit #0" | git-commit-tree $tree) &&
 	zero=$commit &&
 	parent=$zero &&
-	for i in $cnt
+	i=0 &&
+	while test $i -le $cnt
 	do
-	    sleep 1 &&
+	    i=$(($i+1)) &&
+	    test_tick &&
+	    echo "Commit #$i" >mozart/is/pink &&
+	    git-update-index --add mozart/is/pink &&
+	    tree=$(git-write-tree) &&
 	    commit=$(echo "Commit #$i" | git-commit-tree $tree -p $parent) &&
+	    git-update-ref refs/tags/commit$i $commit &&
 	    parent=$commit || return 1
 	done &&
 	git-update-ref HEAD "$commit" &&
-	git-clone -l ./. victim &&
+	git-clone ./. victim &&
 	cd victim &&
 	git-log &&
 	cd .. &&
 	git-update-ref HEAD "$zero" &&
 	parent=$zero &&
-	for i in $cnt
+	i=0 &&
+	while test $i -le $cnt
 	do
-	    sleep 1 &&
+	    i=$(($i+1)) &&
+	    test_tick &&
+	    echo "Rebase #$i" >mozart/is/pink &&
+	    git-update-index --add mozart/is/pink &&
+	    tree=$(git-write-tree) &&
 	    commit=$(echo "Rebase #$i" | git-commit-tree $tree -p $parent) &&
+	    git-update-ref refs/tags/rebase$i $commit &&
 	    parent=$commit || return 1
 	done &&
 	git-update-ref HEAD "$commit" &&
 	echo Rebase &&
 	git-log'
 
+test_expect_success 'pack the source repository' '
+	git repack -a -d &&
+	git prune
+'
+
+test_expect_success 'pack the destination repository' '
+	cd victim &&
+	git repack -a -d &&
+	git prune &&
+	cd ..
+'
+
 test_expect_success \
         'pushing rewound head should not barf but require --force' ' 
 	# should not fail but refuse to update.

t/test-lib.sh

@@ -96,6 +96,17 @@ test_count=0
 
 trap 'echo >&5 "FATAL: Unexpected exit with code $?"; exit 1' exit
 
+test_tick () {
+	if test -z "${test_tick+set}"
+	then
+		test_tick=432630000
+	else
+		test_tick=$(($test_tick + 60))
+	fi
+	GIT_COMMITTER_DATE=$test_tick
+	GIT_AUTHOR_DATE=$test_tick
+	export GIT_COMMITTER_DATE GIT_AUTHOR_DATE
+}
 
 # You are not expected to call test_ok_ and test_failure_ directly, use
 # the text_expect_* functions instead.