tests: unittests: add netopt module unit tests

tests/unittests/tests-netopt/Makefile

+include $(RIOTBASE)/Makefile.base

tests/unittests/tests-netopt/Makefile.include

+USEMODULE += netopt

tests/unittests/tests-netopt/tests-netopt.c

+/*
+ * Copyright (C) 2015 Kaspar Schleiser <kaspar@schleiser.de>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @{
+ *
+ * @file
+ */
+#include <string.h>
+
+#include "embUnit.h"
+
+#include "net/netopt.h"
+
+#include "unittests-constants.h"
+#include "tests-netopt.h"
+
+void test_netopt2str(void)
+{
+    /* here we just test if netopt2str has a value defined for any given
+     * NETOPT option code */
+    for (int i = 0; i < NETOPT_NUMOF; i++) {
+        TEST_ASSERT(strcmp(netopt2str(i), "unknown"));
+    }
+}
+
+void test_netopt2str_unknown(void)
+{
+    TEST_ASSERT_EQUAL_INT(0, strcmp(netopt2str(NETOPT_NUMOF), "unknown"));
+}
+
+
+Test *tests_netopt_tests(void)
+{
+    EMB_UNIT_TESTFIXTURES(fixtures) {
+        new_TestFixture(test_netopt2str),
+        new_TestFixture(test_netopt2str_unknown),
+    };
+
+    EMB_UNIT_TESTCALLER(netopt_tests, NULL, NULL, fixtures);
+
+    return (Test *)&netopt_tests;
+}
+
+void tests_netopt(void)
+{
+    TESTS_RUN(tests_netopt_tests());
+}
+/** @} */

tests/unittests/tests-netopt/tests-netopt.h

+/*
+ * Copyright (C) 2015 Kaspar Schleiser <kaspar@schleiser.de>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @addtogroup  unittests
+ * @{
+ *
+ * @file
+ * @brief       Unittests for the ``netopt`` module
+ *
+ * @author      Kaspar Schleiser <kaspar@schleiser.de>
+ */
+#ifndef TESTS_NETOPT_H_
+#define TESTS_NETOPT_H_
+
+#include "embUnit.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief   The entry point of this test suite.
+ */
+void tests_netopt(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* TESTS_NETOPT_H_ */
+/** @} */