unit-tests: Add asserts against SAs (e.g. their states)

src/libcharon/tests/Makefile.am

@@ -27,6 +27,7 @@ exchange_tests_SOURCES = \
   utils/exchange_test_helper.h utils/exchange_test_helper.c \
   utils/mock_ipsec.h utils/mock_ipsec.c \
   utils/mock_sender.h utils/mock_sender.c \
+  utils/sa_asserts.h \
   exchange_tests.h exchange_tests.c
 
 exchange_tests_CFLAGS = \

src/libcharon/tests/utils/sa_asserts.h

@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2016 Tobias Brunner
+ * HSR Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program 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 General Public License
+ * for more details.
+ */
+
+/**
+ * Special assertions against IKE_SAs and CHILD_SAs (e.g. regarding their
+ * state).
+ *
+ * @defgroup sa_asserts sa_asserts
+ * @{ @ingroup test_utils_c
+ */
+
+#ifndef SA_ASSERTS_H_
+#define SA_ASSERTS_H_
+
+/**
+ * Check that there exists a specific number of CHILD_SAs.
+ */
+#define assert_child_sa_count(ike_sa, count) \
+({ \
+	typeof(ike_sa) _sa = ike_sa; \
+	typeof(count) _count = count; \
+	test_assert_msg(_count == _sa->get_child_count(_sa), "unexpected number " \
+					"of CHILD_SAs in IKE_SA %s (%d != %d)", #ike_sa, _count, \
+					_sa->get_child_count(_sa)); \
+})
+
+/**
+ * Check if the CHILD_SA with the given inbound SPI is in the expected state.
+ */
+#define assert_child_sa_state(ike_sa, spi, state) \
+({ \
+	typeof(ike_sa) _sa = ike_sa; \
+	typeof(spi) _spi = spi; \
+	typeof(state) _state = state; \
+	child_sa_t *_child = _sa->get_child_sa(_sa, PROTO_ESP, _spi, TRUE); \
+	test_assert_msg(_child, "CHILD_SA with SPI %.8x does not exist", \
+					ntohl(_spi)); \
+	test_assert_msg(_state == _child->get_state(_child), "%N != %N", \
+					child_sa_state_names, _state, \
+					child_sa_state_names, _child->get_state(_child)); \
+})
+
+#endif /** SA_ASSERTS_H_ @}*/