1 files changed, 60 insertions, 0 deletions
diff --git a/shell_cmds/time/tests/test_time.sh b/shell_cmds/time/tests/test_time.sh
new file mode 100755
index 0000000..6cf002d
--- /dev/null
+++ b/shell_cmds/time/tests/test_time.sh
@@ -0,0 +1,60 @@
+#!/bin/sh
+
+set -o nounset
+
+TIME="${TIME-/usr/bin/time}"
+echo "SUITE: time(1)"
+what $TIME
+echo
+
+EXIT=0
+
+echo TEST: check real time
+
+TIME_SLEEP=`$TIME 2>&1 sleep 1 | sed -n -E 's/[ ]+([0-9]+).*/\1/p'`
+TIME_STATUS=$?
+
+if [ "$TIME_STATUS" -ne "0" ]; then
+	echo FAIL: time failed with "$TIME_STATUS"
+	EXIT=1
+fi
+
+if [ "$TIME_SLEEP" -lt "0" ]; then
+	echo FAIL: time mis-timed sleep
+	EXIT=2
+fi
+
+MONOTONIC=`sysctl -n kern.monotonic.task_thread_counting`
+if [ "$MONOTONIC" -ne "0" ]; then
+	echo TEST: check instructions retired
+
+	TIME_INSTRS=`$TIME -l 2>&1 sleep 1 | sed -E -n '/instructions/p'`
+	if [ -z "$TIME_INSTRS" ]; then
+		echo FAIL: time is not showing instructions retired
+		EXIT=3
+	fi
+else
+	echo SKIP: check instructions retired
+fi
+
+# NB: SIGINT and SIGQUIT work locally, but the automated test harnesses tries to
+# handle those signals itself before the fork.
+
+echo TEST: check child SIGUSR1
+
+TIME_USR1=`$TIME 2>&1 sh -c 'kill -USR1 $$ && sleep 5 && true'`
+TIME_STATUS=$?
+if [ "$TIME_STATUS" -eq "0" ]; then
+	echo FAIL: time should allow child to receive SIGUSR1
+	EXIT=4
+fi
+
+echo TEST: check non-existent binary
+TIME_NONEXIST=`$TIME 2>&1 ./this-wont-exist`
+TIME_STATUS=$?
+if [ "$TIME_STATUS" -ne "127" ]; then
+	echo FAIL: time should error when measuring a non-existent command
+	EXIT=5
+fi
+
+exit $EXIT