test: add valgrind memory checks

Copy over the "make memcheck" target from libshl. It runs the test-suite
again via valgrind and fails on any valgrind warnings. This is very useful
to find memory-leaks and invalid memory-accesses via the test-suite.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>

.gitignore

@@ -1,6 +1,7 @@
 *.la
 *.lo
 *.log
+*.memlog
 *.o
 *.swp
 *.tar.xz
@@ -28,6 +29,7 @@ miraclectl
 miracled
 stamp-h1
 test-suite.log
+test_valgrind
 test_wpas
 wpa_cli
 wpa_supplicant

Makefile.am

@@ -27,6 +27,7 @@ pkgconfig_DATA =
 TPHONY =
 
 TESTS =
+MEMTESTS =
 bin_PROGRAMS =
 check_PROGRAMS =
 lib_LTLIBRARIES =
@@ -180,8 +181,9 @@ tests = \
 	test_wpas
 
 if BUILD_HAVE_CHECK
-check_PROGRAMS += $(tests)
+check_PROGRAMS += $(tests) test_valgrind
-TESTS += $(tests)
+TESTS += $(tests) test_valgrind
+MEMTESTS += $(tests)
 endif
 
 test_sources = \
@@ -197,11 +199,40 @@ test_cflags = \
 test_lflags = \
 	$(AM_LDFLAGS)
 
+test_rtsp_SOURCES = test/test_rtsp.c $(test_sources)
+test_rtsp_CPPFLAGS = $(test_cflags)
+test_rtsp_LDADD = $(test_libs)
+test_rtsp_LDFLAGS = $(test_lflags)
+
+test_valgrind_SOURCES = test/test_valgrind.c $(test_sources)
+test_valgrind_CPPFLAGS = $(test_cflags)
+test_valgrind_LDADD = $(test_libs)
+test_valgrind_LDFLAGS = $(test_lflags)
+
 test_wpas_SOURCES = test/test_wpas.c $(test_sources)
 test_wpas_CPPFLAGS = $(test_cflags)
 test_wpas_LDADD = $(test_libs)
 test_wpas_LDFLAGS = $(test_lflags)
 
+VALGRIND = CK_FORK=no valgrind --tool=memcheck --leak-check=yes --show-reachable=yes --leak-resolution=high --error-exitcode=1 --suppressions=$(top_builddir)/test.supp
+
+# verify that test_valgrind actually leaks data
+memcheck-verify: check
+	$(AM_V_GEN)$(VALGRIND) --log-file=/dev/null ./test_valgrind >/dev/null ; test 1 = $$?
+
+TPHONY += memcheck-verify
+
+# run memcheck tests via valgrind
+memcheck: memcheck-verify
+	$(AM_V_GEN)for i in $(MEMTESTS) ; do \
+		$(VALGRIND) --log-file=$(top_builddir)/$$i.memlog \
+			$(top_builddir)/$$i >/dev/null || (echo "memcheck failed on: $$i" ; exit 1) ; \
+	done
+
+TPHONY += memcheck
+
+distcheck-hook: memcheck
+
 #
 # Phony targets
 #

test.supp

@@ -0,0 +1,15 @@
+#
+# Some suppression rules for our test-suite to work correctly.
+# libcheck has some weird errors, so lets ignore them.
+#
+
+{
+   libcheck timer_create warnings
+   Memcheck:Param
+   timer_create(evp)
+   fun:timer_create
+   obj:/usr/lib/libcheck.so.0.0.0
+   obj:/usr/lib/libcheck.so.0.0.0
+   fun:srunner_run
+   fun:main
+}

test/test_valgrind.c

@@ -0,0 +1,42 @@
+/*
+ * MiracleCast - Wifi-Display/Miracast Implementation
+ *
+ * Copyright (c) 2013-2014 David Herrmann <dh.herrmann@gmail.com>
+ *
+ * MiracleCast is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or
+ * (at your option) any later version.
+ *
+ * MiracleCast is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with MiracleCast; If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Dummy which just leaks memory. Used to verify valgrind memcheck. */
+
+#include "test_common.h"
+
+START_TEST(test_valgrind)
+{
+	void *p;
+
+	p = malloc(0x100);
+	ck_assert(!!p);
+}
+END_TEST
+
+TEST_DEFINE_CASE(misc)
+	TEST(test_valgrind)
+TEST_END_CASE
+
+TEST_DEFINE(
+	TEST_SUITE(valgrind,
+		TEST_CASE(misc),
+		TEST_END
+	)
+)