1 files changed, 20 insertions, 33 deletions
diff --git a/t/t4200-rerere.sh b/t/t4200-rerere.sh
index c571a1bd74..639d45fcec 100755
--- a/t/t4200-rerere.sh
+++ b/t/t4200-rerere.sh
@@ -112,39 +112,26 @@ rr2=.git/rr-cache/$sha2
 mkdir $rr2
 echo Hello > $rr2/preimage
 
-case "$(date -d @11111111 +%s 2>/dev/null)" in
-11111111)
-	# 'date' must be able to take arbitrary input with @11111111 notation.
-	# for this test to succeed.  We should fix this part using more
-	# portable script someday.
-
-	now=$(date +%s)
-	almost_15_days_ago=$(($now+60-15*86400))
-	just_over_15_days_ago=$(($now-1-15*86400))
-	almost_60_days_ago=$(($now+60-60*86400))
-	just_over_60_days_ago=$(($now-1-60*86400))
-	predate1="$(date -d "@$almost_60_days_ago" +%Y%m%d%H%M.%S)"
-	predate2="$(date -d "@$almost_15_days_ago" +%Y%m%d%H%M.%S)"
-	postdate1="$(date -d "@$just_over_60_days_ago" +%Y%m%d%H%M.%S)"
-	postdate2="$(date -d "@$just_over_15_days_ago" +%Y%m%d%H%M.%S)"
-
-	touch -m -t "$predate1" $rr/preimage
-	touch -m -t "$predate2" $rr2/preimage
-
-	test_expect_success 'garbage collection (part1)' 'git rerere gc'
-
-	test_expect_success 'young records still live' \
-		"test -f $rr/preimage -a -f $rr2/preimage"
-
-	touch -m -t "$postdate1" $rr/preimage
-	touch -m -t "$postdate2" $rr2/preimage
-
-	test_expect_success 'garbage collection (part2)' 'git rerere gc'
-
-	test_expect_success 'old records rest in peace' \
-		"test ! -f $rr/preimage -a ! -f $rr2/preimage"
-	;;
-esac
+almost_15_days_ago=$((60-15*86400))
+just_over_15_days_ago=$((-1-15*86400))
+almost_60_days_ago=$((60-60*86400))
+just_over_60_days_ago=$((-1-60*86400))
+
+test-chmtime =$almost_60_days_ago $rr/preimage
+test-chmtime =$almost_15_days_ago $rr2/preimage
+
+test_expect_success 'garbage collection (part1)' 'git rerere gc'
+
+test_expect_success 'young records still live' \
+	"test -f $rr/preimage && test -f $rr2/preimage"
+
+test-chmtime =$just_over_60_days_ago $rr/preimage
+test-chmtime =$just_over_15_days_ago $rr2/preimage
+
+test_expect_success 'garbage collection (part2)' 'git rerere gc'
+
+test_expect_success 'old records rest in peace' \
+	"test ! -f $rr/preimage && test ! -f $rr2/preimage"
 
 test_done