From 58ab8b49e0ef391ba898a05ceaf54f3f0c52fd4d Mon Sep 17 00:00:00 2001
From: "Dmitry V. Levin" <ldv@altlinux.org>
Date: Mon, 9 May 2016 23:15:52 +0000
Subject: [PATCH] strace-ff.test: check that -ff does not create unexpected
 output files

* tests/strace-ff.expected: New file.
* tests/Makefile.am (EXTRA_DIST): Add it.
* tests/strace-ff.test: Use it.  Check that no other output files
have been created.
---
 tests/Makefile.am        |  1 +
 tests/strace-ff.expected |  2 ++
 tests/strace-ff.test     | 13 ++++++++++---
 3 files changed, 13 insertions(+), 3 deletions(-)
 create mode 100644 tests/strace-ff.expected

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 6f4815b9..74012afb 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -658,6 +658,7 @@ EXTRA_DIST = init.sh run.sh match.awk \
 	     statfs.expected \
 	     statx.sh \
 	     strace-T.expected \
+	     strace-ff.expected \
 	     strace-r.expected \
 	     struct_flock.c \
 	     sun_path.expected \
diff --git a/tests/strace-ff.expected b/tests/strace-ff.expected
new file mode 100644
index 00000000..627a1b4c
--- /dev/null
+++ b/tests/strace-ff.expected
@@ -0,0 +1,2 @@
+exit_group(0) = ?
++++ exited with 0 +++
diff --git a/tests/strace-ff.test b/tests/strace-ff.test
index 6078c726..d1e06344 100755
--- a/tests/strace-ff.test
+++ b/tests/strace-ff.test
@@ -4,11 +4,18 @@
 
 . "${srcdir=.}/init.sh"
 
+rm -f "$LOG".*
+
 ./set_ptracer_any ./sleep 1 > /dev/null &
 PID=$!
 run_strace -a14 -eexit_group -ff -p $PID
-printf "exit_group(0) = ?\n+++ exited with 0 +++\n" > "$LOG"
 
-match_diff "$LOG" "$LOG.$PID"
+# check that output matches
+match_diff "$LOG.$PID"
 
-rm -f "$LOG".*
+# check that no other output files have been created
+set -- "$LOG".*
+[ "$LOG.$PID" = "$*" ] ||
+	fail_ "too many output files: $*"
+
+rm -f "$LOG.$PID"
-- 
2.50.1