211 lines
6.5 KiB
C
211 lines
6.5 KiB
C
/*
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* Copyright (C) 2016 Cenk Gündoğan <mail@cgundogan.de>
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* Copyright (C) 2018 Freie Universität Berlin
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @{
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*
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* @file
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* @author Cenk Gündoğan <mail@cgundogan.de>
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* @author Martine Lenders <m.lenders@fu-berlin.de>
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "embUnit.h"
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#include "net/ipv6/addr.h"
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#include "net/ipv6/ext.h"
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#include "net/ipv6/hdr.h"
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#include "net/gnrc/rpl/srh.h"
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#include "net/gnrc/ipv6/ext/rh.h"
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#include "unittests-constants.h"
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#include "tests-gnrc_rpl_srh.h"
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#define IPV6_DST {{ 0x20, 0x01, 0xab, 0xcd, \
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0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x01 }}
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#define IPV6_ADDR1 {{ 0x20, 0x01, 0xab, 0xcd, \
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0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x02 }}
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#define IPV6_ADDR2 {{ 0x20, 0x01, 0xab, 0xcd, \
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0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x03 }}
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#define IPV6_MCAST_ADDR {{ 0xff, 0x05, 0xab, 0xcd, \
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0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x03 }}
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#define IPV6_ADDR1_ELIDED { 0x00, 0x00, 0x02 }
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#define IPV6_ADDR2_ELIDED { 0x00, 0x00, 0x03 }
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#define IPV6_ELIDED_PREFIX (13)
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#define SRH_SEG_LEFT (2)
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#define MAX_BUF_SIZE ((sizeof(gnrc_rpl_srh_t) + 2) + sizeof(ipv6_addr_t))
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static ipv6_hdr_t hdr;
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static uint8_t buf[MAX_BUF_SIZE];
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static void set_up(void)
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{
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memset(&hdr, 0, sizeof(hdr));
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memset(buf, 0, sizeof(buf));
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}
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static inline void _init_hdrs(gnrc_rpl_srh_t **srh, uint8_t **vec,
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const ipv6_addr_t *dst)
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{
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*srh = (gnrc_rpl_srh_t *)buf;
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*vec = (uint8_t *)(*srh + 1);
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memcpy(&hdr.dst, dst, sizeof(hdr.dst));
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}
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static void test_rpl_srh_dst_multicast(void)
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{
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static const ipv6_addr_t a1 = IPV6_ADDR1, a2 = IPV6_ADDR2;
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static const ipv6_addr_t mcast = IPV6_MCAST_ADDR;
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gnrc_rpl_srh_t *srh;
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uint8_t *vec;
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void *err_ptr;
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int res;
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_init_hdrs(&srh, &vec, &mcast);
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srh->len = (2 * sizeof(ipv6_addr_t)) / 8;
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srh->seg_left = SRH_SEG_LEFT;
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memcpy(vec, &a1, sizeof(a1));
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memcpy(vec + sizeof(a1), &a2, sizeof(a2));
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res = gnrc_rpl_srh_process(&hdr, srh, &err_ptr);
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TEST_ASSERT_EQUAL_INT(res, GNRC_IPV6_EXT_RH_ERROR);
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TEST_ASSERT((&hdr.dst) == err_ptr);
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}
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static void test_rpl_srh_route_multicast(void)
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{
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static const ipv6_addr_t a1 = IPV6_ADDR1;
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static const ipv6_addr_t mcast = IPV6_MCAST_ADDR;
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static const ipv6_addr_t dst = IPV6_DST;
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gnrc_rpl_srh_t *srh;
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uint8_t *vec;
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void *err_ptr;
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int res;
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_init_hdrs(&srh, &vec, &dst);
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srh->len = (2 * sizeof(ipv6_addr_t)) / 8;
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srh->seg_left = SRH_SEG_LEFT;
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memcpy(vec, &mcast, sizeof(mcast));
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memcpy(vec + sizeof(mcast), &a1, sizeof(a1));
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res = gnrc_rpl_srh_process(&hdr, srh, &err_ptr);
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TEST_ASSERT_EQUAL_INT(res, GNRC_IPV6_EXT_RH_ERROR);
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TEST_ASSERT(vec == err_ptr);
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}
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static void test_rpl_srh_too_many_seg_left(void)
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{
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static const ipv6_addr_t a1 = IPV6_ADDR1;
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static const ipv6_addr_t dst = IPV6_DST;
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gnrc_rpl_srh_t *srh;
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uint8_t *vec;
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void *err_ptr;
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int res;
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_init_hdrs(&srh, &vec, &dst);
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srh->len = sizeof(ipv6_addr_t) / 8;
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srh->seg_left = SRH_SEG_LEFT;
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memcpy(vec, &a1, sizeof(a1));
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res = gnrc_rpl_srh_process(&hdr, srh, &err_ptr);
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TEST_ASSERT_EQUAL_INT(res, GNRC_IPV6_EXT_RH_ERROR);
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TEST_ASSERT((&srh->seg_left) == err_ptr);
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}
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static void test_rpl_srh_nexthop_no_prefix_elided(void)
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{
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static const ipv6_addr_t a1 = IPV6_ADDR1, a2 = IPV6_ADDR2, dst = IPV6_DST;
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static const ipv6_addr_t expected1 = IPV6_ADDR1, expected2 = IPV6_ADDR2;
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gnrc_rpl_srh_t *srh;
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uint8_t *vec;
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void *err_ptr;
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int res;
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_init_hdrs(&srh, &vec, &dst);
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srh->len = (2 * sizeof(ipv6_addr_t)) / 8;
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srh->seg_left = SRH_SEG_LEFT;
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memcpy(vec, &a1, sizeof(a1));
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memcpy(vec + sizeof(a1), &a2, sizeof(a2));
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/* first hop */
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res = gnrc_rpl_srh_process(&hdr, srh, &err_ptr);
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TEST_ASSERT_EQUAL_INT(res, GNRC_IPV6_EXT_RH_FORWARDED);
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TEST_ASSERT_EQUAL_INT(SRH_SEG_LEFT - 1, srh->seg_left);
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TEST_ASSERT(ipv6_addr_equal(&hdr.dst, &expected1));
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/* second hop */
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res = gnrc_rpl_srh_process(&hdr, srh, &err_ptr);
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TEST_ASSERT_EQUAL_INT(res, GNRC_IPV6_EXT_RH_FORWARDED);
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TEST_ASSERT_EQUAL_INT(SRH_SEG_LEFT - 2, srh->seg_left);
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TEST_ASSERT(ipv6_addr_equal(&hdr.dst, &expected2));
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}
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static void test_rpl_srh_nexthop_prefix_elided(void)
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{
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static const ipv6_addr_t dst = IPV6_DST;
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static const ipv6_addr_t expected1 = IPV6_ADDR1, expected2 = IPV6_ADDR2;
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gnrc_rpl_srh_t *srh;
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uint8_t *vec;
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void *err_ptr;
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int res;
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static const uint8_t a1[3] = IPV6_ADDR1_ELIDED;
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static const uint8_t a2[3] = IPV6_ADDR2_ELIDED;
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_init_hdrs(&srh, &vec, &dst);
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srh->len = (sizeof(a1) + sizeof(a2) + 2) / 8;
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srh->seg_left = SRH_SEG_LEFT;
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srh->compr = (IPV6_ELIDED_PREFIX << 4) | IPV6_ELIDED_PREFIX;
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srh->pad_resv = 2 << 4;
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memcpy(vec, &a1, sizeof(a1));
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memcpy(vec + sizeof(a1), &a2, sizeof(a2));
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/* first hop */
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res = gnrc_rpl_srh_process(&hdr, srh, &err_ptr);
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TEST_ASSERT_EQUAL_INT(res, GNRC_IPV6_EXT_RH_FORWARDED);
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TEST_ASSERT_EQUAL_INT(SRH_SEG_LEFT - 1, srh->seg_left);
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TEST_ASSERT(ipv6_addr_equal(&hdr.dst, &expected1));
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/* second hop */
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res = gnrc_rpl_srh_process(&hdr, srh, &err_ptr);
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TEST_ASSERT_EQUAL_INT(res, GNRC_IPV6_EXT_RH_FORWARDED);
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TEST_ASSERT_EQUAL_INT(SRH_SEG_LEFT - 2, srh->seg_left);
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TEST_ASSERT(ipv6_addr_equal(&hdr.dst, &expected2));
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}
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static Test *tests_rpl_srh_tests(void)
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{
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EMB_UNIT_TESTFIXTURES(fixtures) {
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new_TestFixture(test_rpl_srh_dst_multicast),
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new_TestFixture(test_rpl_srh_route_multicast),
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new_TestFixture(test_rpl_srh_too_many_seg_left),
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new_TestFixture(test_rpl_srh_nexthop_no_prefix_elided),
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new_TestFixture(test_rpl_srh_nexthop_prefix_elided),
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};
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EMB_UNIT_TESTCALLER(rpl_srh_tests, set_up, NULL, fixtures);
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return (Test *)&rpl_srh_tests;
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}
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void tests_gnrc_rpl_srh(void)
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{
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TESTS_RUN(tests_rpl_srh_tests());
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}
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/** @} */
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