rpl: srh: add unittests

tests/unittests/tests-rpl_srh/Makefile

@@ -0,0 +1 @@
+include $(RIOTBASE)/Makefile.base

tests/unittests/tests-rpl_srh/Makefile.include

@@ -0,0 +1,3 @@
+USEMODULE += gnrc_ipv6
+USEMODULE += ipv6_addr
+USEMODULE += gnrc_rpl_srh

tests/unittests/tests-rpl_srh/tests-rpl_srh.c

@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2016 Cenk Gündoğan <mail@cgundogan.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 <stdlib.h>
+#include <string.h>
+#include "embUnit.h"
+
+#include "net/ipv6/addr.h"
+#include "net/ipv6/ext.h"
+#include "net/ipv6/hdr.h"
+#include "net/gnrc/rpl/srh.h"
+
+#include "unittests-constants.h"
+#include "tests-rpl_srh.h"
+
+#define IPV6_DST            {{ 0x20, 0x01, 0xab, 0xcd, \
+                               0x00, 0x00, 0x00, 0x00, \
+                               0x00, 0x00, 0x00, 0x00, \
+                               0x00, 0x00, 0x00, 0x01 }}
+#define IPV6_ADDR1          {{ 0x20, 0x01, 0xab, 0xcd, \
+                               0x00, 0x00, 0x00, 0x00, \
+                               0x00, 0x00, 0x00, 0x00, \
+                               0x00, 0x00, 0x00, 0x02 }}
+#define IPV6_ADDR2          {{ 0x20, 0x01, 0xab, 0xcd, \
+                               0x00, 0x00, 0x00, 0x00, \
+                               0x00, 0x00, 0x00, 0x00, \
+                               0x00, 0x00, 0x00, 0x03 }}
+
+#define IPV6_ADDR1_ELIDED   { 0x00, 0x00, 0x02 }
+#define IPV6_ADDR2_ELIDED   { 0x00, 0x00, 0x03 }
+#define IPV6_ELIDED_PREFIX  (13)
+
+#define SRH_SEG_LEFT        (2)
+
+static void test_rpl_srh_nexthop_no_prefix_elided(void)
+{
+    ipv6_hdr_t hdr;
+    uint8_t buf[sizeof(gnrc_rpl_srh_t) + 2 * sizeof(ipv6_addr_t)] = { 0 };
+    int res;
+    gnrc_rpl_srh_t *srh = (gnrc_rpl_srh_t *) buf;
+    uint8_t *vec = (uint8_t *) (srh + 1);
+    ipv6_addr_t a1 = IPV6_ADDR1, a2 = IPV6_ADDR2, dst = IPV6_DST,
+                     expected1 = IPV6_ADDR1, expected2 = IPV6_ADDR2;
+
+    hdr.dst = dst;
+
+    srh->len = (2 * sizeof(ipv6_addr_t)) / 8;
+    srh->seg_left = SRH_SEG_LEFT;
+    memcpy(vec, &a1, sizeof(a1));
+    memcpy(vec + sizeof(a1), &a2, sizeof(a2));
+
+    /* first hop */
+    res = gnrc_rpl_srh_process(&hdr, srh);
+    TEST_ASSERT_EQUAL_INT(res, EXT_RH_CODE_FORWARD);
+    TEST_ASSERT_EQUAL_INT(SRH_SEG_LEFT - 1, srh->seg_left);
+    TEST_ASSERT(ipv6_addr_equal(&hdr.dst, &expected1));
+
+    /* second hop */
+    res = gnrc_rpl_srh_process(&hdr, srh);
+    TEST_ASSERT_EQUAL_INT(res, EXT_RH_CODE_FORWARD);
+    TEST_ASSERT_EQUAL_INT(SRH_SEG_LEFT - 2, srh->seg_left);
+    TEST_ASSERT(ipv6_addr_equal(&hdr.dst, &expected2));
+}
+
+static void test_rpl_srh_nexthop_prefix_elided(void)
+{
+    ipv6_hdr_t hdr;
+    uint8_t a1[3] = IPV6_ADDR1_ELIDED;
+    uint8_t a2[3] = IPV6_ADDR2_ELIDED;
+    uint8_t buf[sizeof(gnrc_rpl_srh_t) + sizeof(a1) + sizeof(a2)] = { 0 };
+    int res;
+    gnrc_rpl_srh_t *srh = (gnrc_rpl_srh_t *) buf;
+    uint8_t *vec = (uint8_t *) (srh + 1);
+    ipv6_addr_t dst = IPV6_DST, expected1 = IPV6_ADDR1, expected2 = IPV6_ADDR2;
+
+    hdr.dst = dst;
+
+    srh->len = (sizeof(a1) + sizeof(a2) + 2) / 8;
+    srh->seg_left = SRH_SEG_LEFT;
+    srh->compr = (IPV6_ELIDED_PREFIX << 4) | IPV6_ELIDED_PREFIX;
+    srh->pad_resv = 2 << 4;
+    memcpy(vec, &a1, sizeof(a1));
+    memcpy(vec + sizeof(a1), &a2, sizeof(a2));
+
+    /* first hop */
+    res = gnrc_rpl_srh_process(&hdr, srh);
+    TEST_ASSERT_EQUAL_INT(res, EXT_RH_CODE_FORWARD);
+    TEST_ASSERT_EQUAL_INT(SRH_SEG_LEFT - 1, srh->seg_left);
+    TEST_ASSERT(ipv6_addr_equal(&hdr.dst, &expected1));
+
+    /* second hop */
+    res = gnrc_rpl_srh_process(&hdr, srh);
+    TEST_ASSERT_EQUAL_INT(res, EXT_RH_CODE_FORWARD);
+    TEST_ASSERT_EQUAL_INT(SRH_SEG_LEFT - 2, srh->seg_left);
+    TEST_ASSERT(ipv6_addr_equal(&hdr.dst, &expected2));
+}
+
+Test *tests_rpl_srh_tests(void)
+{
+    EMB_UNIT_TESTFIXTURES(fixtures) {
+        new_TestFixture(test_rpl_srh_nexthop_no_prefix_elided),
+        new_TestFixture(test_rpl_srh_nexthop_prefix_elided),
+    };
+
+    EMB_UNIT_TESTCALLER(rpl_srh_tests, NULL, NULL, fixtures);
+
+    return (Test *)&rpl_srh_tests;
+}
+
+void tests_rpl_srh(void)
+{
+    TESTS_RUN(tests_rpl_srh_tests());
+}
+/** @} */

tests/unittests/tests-rpl_srh/tests-rpl_srh.h

@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2016 Cenk Gündoğan <mail@cgundogan.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 ``gnrc_rpl_srh`` module
+ *
+ * @author      Cenk Gündoğan <mail@cgundogan.de>
+ */
+#ifndef TESTS_RPL_SRH_H_
+#define TESTS_RPL_SRH_H_
+
+#include "embUnit.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief   The entry point of this test suite.
+ */
+void tests_rpl_srh(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* TESTS_RPL_SRH_H_ */
+/** @} */