52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <inttypes.h>
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#include <openbsc/gprs_llc.h>
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#define ASSERT_FALSE(x) if (x) { printf("Should have returned false.\n"); abort(); }
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#define ASSERT_TRUE(x) if (!x) { printf("Should have returned true.\n"); abort(); }
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/**
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* GSM 04.64 8.4.2 Receipt of unacknowledged information
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*/
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static int nu_is_retransmission(uint16_t nu, uint16_t vur)
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{
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int ret = gprs_llc_is_retransmit(nu, vur);
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printf("N(U) = %d, V(UR) = %d => %s\n", nu, vur,
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ret == 1 ? "retransmit" : "new");
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return ret;
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}
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static void test_8_4_2()
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{
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printf("Testing gprs_llc_is_retransmit.\n");
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ASSERT_FALSE(nu_is_retransmission(0, 0));
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ASSERT_TRUE (nu_is_retransmission(0, 1));
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/* expect 1... check for retransmissions */
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ASSERT_TRUE (nu_is_retransmission(0, 1));
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ASSERT_TRUE (nu_is_retransmission(511, 1));
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ASSERT_TRUE (nu_is_retransmission(483, 1));
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ASSERT_TRUE (nu_is_retransmission(482, 1));
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ASSERT_FALSE(nu_is_retransmission(481, 1));
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/* expect 511... check for retransmissions */
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ASSERT_FALSE(nu_is_retransmission(0, 240)); // ahead
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ASSERT_FALSE(nu_is_retransmission(0, 511)); // ahead
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ASSERT_FALSE(nu_is_retransmission(1, 511)); // ahead
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ASSERT_FALSE(nu_is_retransmission(511, 511)); // same
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ASSERT_TRUE (nu_is_retransmission(510, 511)); // behind
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ASSERT_TRUE (nu_is_retransmission(481, 511)); // behind
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ASSERT_FALSE(nu_is_retransmission(479, 511)); // wrapped
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}
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int main(int argc, char **argv)
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{
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test_8_4_2();
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printf("Done.\n");
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return EXIT_SUCCESS;
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}
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