tests: add strace-tt.test

* tests/strace-tt.test: New test.
* tests/Makefile.am (MISC_TESTS): Add it.

tests/Makefile.am

@@ -383,6 +383,7 @@ MISC_TESTS = \
 	strace-T.test \
 	strace-f.test \
 	strace-t.test \
+	strace-tt.test \
 	vfork-f.test \
 	# end of MISC_TESTS
 

tests/strace-tt.test

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+# Check -tt option.
+
+. "${srcdir=.}/init.sh"
+
+run_prog_skip_if_failed date +%T > /dev/null
+run_prog ./sleep 0
+
+t0="$(date +%T)"
+run_strace -tt -eexecve $args
+t1="$(date +%T)"
+
+EXPECTED="$LOG.expected"
+cat > "$EXPECTED" << __EOF__
+($t0|$t1)\\.[[:digit:]]{6} execve\\("\\./sleep", \\["\\./sleep", "0"\\], \\[/\\* [[:digit:]]+ vars \\*/\\]\\) = 0
+__EOF__
+
+match_grep "$LOG" "$EXPECTED"
+rm -f "$EXPECTED"