New test suite: net

A place to put tests for the net_sockets module (MBEDTLS_NET_C feature).

Start with a context smoke test.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>

tests/CMakeLists.txt

@@ -134,6 +134,7 @@ add_test_suite(md)
 add_test_suite(mdx)
 add_test_suite(memory_buffer_alloc)
 add_test_suite(mpi)
+add_test_suite(net)
 add_test_suite(nist_kw)
 add_test_suite(oid)
 add_test_suite(pem)

tests/suites/test_suite_net.data

@@ -0,0 +1,6 @@
+Context init-free-free
+context_init_free:0
+
+Context init-free-init-free
+context_init_free:1
+

tests/suites/test_suite_net.function

@@ -0,0 +1,28 @@
+/* BEGIN_HEADER */
+
+#include "mbedtls/net_sockets.h"
+
+/* END_HEADER */
+
+/* BEGIN_DEPENDENCIES
+ * depends_on:MBEDTLS_NET_C
+ * END_DEPENDENCIES
+ */
+
+/* BEGIN_CASE */
+void context_init_free( int reinit )
+{
+    mbedtls_net_context ctx;
+
+    mbedtls_net_init( &ctx );
+    mbedtls_net_free( &ctx );
+
+    if( reinit )
+        mbedtls_net_init( &ctx );
+    mbedtls_net_free( &ctx );
+
+    /* This test case always succeeds, functionally speaking. A plausible
+     * bug might trigger an invalid pointer dereference or a memory leak. */
+    goto exit;
+}
+/* END_CASE */