From 708b8b44aeb8c0e57b8defb3007aef432f2e2b45 Mon Sep 17 00:00:00 2001
From: Pau Espin Pedrol <pespin@sysmocom.de>
Date: Mon, 15 Jan 2018 10:06:32 +0100
Subject: [PATCH] tests: SocketsTest: Avoid hang forever if test fails

Change-Id: Ia95e216a2ab6d397ab02c828b70f2b95d1671257
---
 tests/CommonLibs/SocketsTest.cpp | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/tests/CommonLibs/SocketsTest.cpp b/tests/CommonLibs/SocketsTest.cpp
index 9a7d6f09..bde86b85 100644
--- a/tests/CommonLibs/SocketsTest.cpp
+++ b/tests/CommonLibs/SocketsTest.cpp
@@ -30,10 +30,16 @@
 #include "Threads.h"
 #include <stdio.h>
 #include <stdlib.h>
-
+#include <unistd.h>
+#include <signal.h>
 
 static const int gNumToSend = 10;
 
+static void sigalarm_handler(int foo)
+{
+	printf("FAIL: test did not run successfully\n");
+	exit(EXIT_FAILURE);
+}
 
 void *testReaderIP(void *param)
 {
@@ -56,6 +62,14 @@ void *testReaderIP(void *param)
 int main(int argc, char * argv[] )
 {
 
+  if (signal(SIGALRM, sigalarm_handler) == SIG_ERR) {
+    perror("signal");
+    exit(EXIT_FAILURE);
+  }
+
+  /* If the test takes longer than 2*gNumToSend seconds, abort it */
+  alarm(2* gNumToSend);
+
   UDPSocket readSocket("127.0.0.1", 0);
   UDPSocket socket1("127.0.0.1", 0, "localhost", readSocket.port());