tests/llc: Test gprs_llc_is_retransmit()
Imported from osmo-sgsn.git 4398ac073b7fc8363882b5f7414470b73d4f446a ./tests/gprs/gprs_test.c. Change-Id: I4104ee9cc458b7d169ee9761e02369442058675a
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24a100bac8
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@ -10,12 +10,15 @@ AM_LDFLAGS = \
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$(NULL)
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check_PROGRAMS = \
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llc_test \
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llc_prim_test \
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pdu_codec_test \
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xid_codec_test \
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$(NULL)
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EXTRA_DIST = \
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llc_test.err \
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llc_test.ok \
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llc_prim_test.err \
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llc_prim_test.ok \
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pdu_codec_test.ok \
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@ -24,6 +27,13 @@ EXTRA_DIST = \
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xid_codec_test.err \
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$(NULL)
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llc_test_SOURCES = llc_test.c
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llc_test_LDADD = \
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$(LIBOSMOCORE_LIBS) \
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$(LIBOSMOGSM_LIBS) \
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$(top_builddir)/src/llc/libosmo-gprs-llc.la \
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$(NULL)
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llc_prim_test_SOURCES = llc_prim_test.c
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llc_prim_test_LDADD = \
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$(LIBOSMOCORE_LIBS) \
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@ -0,0 +1,90 @@
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/* LLC stack miscellaneous tests
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*
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* (C) 2011 Holger Hans Peter Freyther <holger@moiji-mobile.com>
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* (C) 2022 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <osmocom/core/application.h>
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#include <osmocom/core/logging.h>
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#include <osmocom/core/utils.h>
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#include <osmocom/core/msgb.h>
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#include <osmocom/gprs/llc/llc.h>
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#include <osmocom/gprs/llc/llc_private.h>
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static void *tall_ctx = NULL;
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#define ASSERT_FALSE(x) do if (x) { printf("Should have returned false.\n"); abort(); } while (0)
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#define ASSERT_TRUE(x) do if (!x) { printf("Should have returned true.\n"); abort(); } while (0)
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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(void)
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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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static const struct log_info_cat test_log_categories[] = { };
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static const struct log_info test_log_info = {
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.cat = test_log_categories,
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.num_cat = ARRAY_SIZE(test_log_categories),
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};
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int main(int argc, char *argv[])
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{
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tall_ctx = talloc_named_const(NULL, 1, __FILE__);
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osmo_init_logging2(tall_ctx, &test_log_info);
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log_parse_category_mask(osmo_stderr_target, "DLGLOBAL,1:");
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log_set_print_filename2(osmo_stderr_target, LOG_FILENAME_NONE);
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log_set_print_category_hex(osmo_stderr_target, 0);
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log_set_print_category(osmo_stderr_target, 1);
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log_set_print_level(osmo_stderr_target, 1);
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log_set_use_color(osmo_stderr_target, 0);
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test_8_4_2();
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talloc_free(tall_ctx);
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}
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@ -0,0 +1,15 @@
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Testing gprs_llc_is_retransmit.
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N(U) = 0, V(UR) = 0 => new
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N(U) = 0, V(UR) = 1 => retransmit
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N(U) = 0, V(UR) = 1 => retransmit
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N(U) = 511, V(UR) = 1 => retransmit
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N(U) = 483, V(UR) = 1 => retransmit
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N(U) = 482, V(UR) = 1 => retransmit
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N(U) = 481, V(UR) = 1 => new
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N(U) = 0, V(UR) = 240 => new
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N(U) = 0, V(UR) = 511 => new
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N(U) = 1, V(UR) = 511 => new
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N(U) = 511, V(UR) = 511 => new
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N(U) = 510, V(UR) = 511 => retransmit
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N(U) = 481, V(UR) = 511 => retransmit
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N(U) = 479, V(UR) = 511 => new
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@ -1,6 +1,13 @@
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AT_INIT
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AT_BANNER([Regression tests])
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AT_SETUP([llc/llc])
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AT_KEYWORDS([llc llc])
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cat $abs_srcdir/llc/llc_test.ok > expout
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cat $abs_srcdir/llc/llc_test.err > experr
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AT_CHECK([$abs_top_builddir/tests/llc/llc_test], [0], [expout], [experr])
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AT_CLEANUP
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AT_SETUP([llc/llc_prim])
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AT_KEYWORDS([llc llc_prim])
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cat $abs_srcdir/llc/llc_prim_test.ok > expout
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