Index: sys/netinet/libalias/tests/Makefile
===================================================================
--- /dev/null
+++ sys/netinet/libalias/tests/Makefile
@@ -0,0 +1,11 @@
+# $FreeBSD$
+
+.include <bsd.own.mk>
+
+ATF_TESTS_C+=	aliasdb_test
+
+SRCS.aliasdb_test=	aliasdb_test.c
+
+LIBADD+=	alias
+
+.include <bsd.test.mk>
Index: sys/netinet/libalias/tests/aliasdb_test.c
===================================================================
--- /dev/null
+++ sys/netinet/libalias/tests/aliasdb_test.c
@@ -0,0 +1,45 @@
+#include <atf-c.h>
+#include <alias.h>
+#include <stdio.h>
+
+ATF_TC(singleinit);
+ATF_TC_HEAD(singleinit, env)
+{
+	atf_tc_set_md_var(env, "descr", "Create an instance");
+}
+ATF_TC_BODY(singleinit, dummy)
+{
+	struct libalias *la;
+
+	la = LibAliasInit(NULL);
+	ATF_CHECK_MSG(la != NULL, "Creating an instance failed.");
+	LibAliasUninit(la);
+}
+
+ATF_TC(multiinit);
+ATF_TC_HEAD(multiinit, env)
+{
+	atf_tc_set_md_var(env, "descr", "Recreate an instance multiple times");
+}
+ATF_TC_BODY(multiinit, dummy)
+{
+	struct libalias *la;
+	int i;
+
+	la = LibAliasInit(NULL);
+	for(i = 1; i < 30; i++) {
+		struct libalias *lo = la;
+
+		la = LibAliasInit(la);
+		ATF_CHECK_MSG(la == lo, "Recreating moved the instance in round: %d", i);
+	}
+	LibAliasUninit(la);
+}
+
+ATF_TP_ADD_TCS(aliasdb)
+{
+	ATF_TP_ADD_TC(aliasdb, singleinit);
+	ATF_TP_ADD_TC(aliasdb, multiinit);
+
+	return atf_no_error();
+}