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Add test code for testing GSM burst transcoding

This commit is contained in:
Andreas Eversberg 2013-02-05 11:52:38 +01:00
parent b469ff54b3
commit 305bda22d0
7 changed files with 228 additions and 1 deletions
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1
.gitignore vendored
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@ -37,6 +37,7 @@ tests/agch/agch_test
tests/paging/paging_test
tests/cipher/cipher_test
tests/sysmobts/sysmobts_test
tests/bursts/bursts_test
tests/testsuite
tests/testsuite.log

1
configure.ac
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@ -84,4 +84,5 @@ AC_OUTPUT(
tests/agch/Makefile
tests/cipher/Makefile
tests/sysmobts/Makefile
tests/bursts/Makefile
Makefile)

2
tests/Makefile.am
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@ -1,4 +1,4 @@
SUBDIRS = paging cipher sysmobts agch
SUBDIRS = paging cipher sysmobts agch bursts
# The `:;' works around a Bash 3.2 bug when the output is not writeable.
$(srcdir)/package.m4: $(top_srcdir)/configure.ac

8
tests/bursts/Makefile.am Normal file
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@ -0,0 +1,8 @@
INCLUDES = $(all_includes) -I$(top_srcdir)/include -I$(OPENBSC_INCDIR)
AM_CFLAGS = -Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOGSM_CFLAGS)
LDADD = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS)
noinst_PROGRAMS = bursts_test
EXTRA_DIST = bursts_test.ok
bursts_test_SOURCES = bursts_test.c $(top_builddir)/src/osmo-bts-trx/xcch.c $(top_builddir)/src/osmo-bts-trx/rach.c $(top_builddir)/src/osmo-bts-trx/sch.c
bursts_test_LDADD = $(LDADD)

210
tests/bursts/bursts_test.c Normal file
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@ -0,0 +1,210 @@
/* (C) 2013 by Andreas Eversberg <jolly@eversberg.eu>
*
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <osmocom/core/bits.h>
#include <osmocom/core/utils.h>
#include "../../src/osmo-bts-trx/xcch.h"
#include "../../src/osmo-bts-trx/rach.h"
#include "../../src/osmo-bts-trx/sch.h"
#define ASSERT_TRUE(rc) \
if (!(rc)) { \
printf("Assert failed in %s:%d.\n", \
__FILE__, __LINE__); \
abort(); \
}
/* set condition to 1, to show debugging */
#define printd if (0) printf
static int ubits2sbits(ubit_t *ubits, sbit_t *sbits, int count)
{
int i;
for (i = 0; i < count; i++) {
if ((*ubits++) & 1)
*sbits++ = -127;
else
*sbits++ = 127;
}
return count;
}
static void test_xcch(uint8_t *l2)
{
uint8_t result[23];
ubit_t bursts_u[116 * 4];
sbit_t bursts_s[116 * 4];
printd("Encoding: %s\n", osmo_hexdump(l2, 23));
/* encode */
xcch_encode(bursts_u, l2);
printd("U-Bits:\n");
printd("%s %02x %02x %s\n", osmo_hexdump(bursts_u, 57),
bursts_u[57], bursts_u[58],
osmo_hexdump(bursts_u + 59, 57));
printd("%s %02x %02x %s\n", osmo_hexdump(bursts_u + 116, 57),
bursts_u[57 + 116], bursts_u[58 + 116],
osmo_hexdump(bursts_u + 59 + 116, 57));
printd("%s %02x %02x %s\n", osmo_hexdump(bursts_u + 232, 57),
bursts_u[57 + 232], bursts_u[58 + 232],
osmo_hexdump(bursts_u + 59 + 232, 57));
printd("%s %02x %02x %s\n", osmo_hexdump(bursts_u + 348, 57),
bursts_u[57 + 348], bursts_u[58 + 348],
osmo_hexdump(bursts_u + 59 + 348, 57));
ubits2sbits(bursts_u, bursts_s, 116 * 4);
printd("S-Bits:\n");
printd("%s %02x %02x %s\n", osmo_hexdump((uint8_t *)bursts_s, 57),
(uint8_t)bursts_s[57], (uint8_t)bursts_s[58],
osmo_hexdump((uint8_t *)bursts_s + 59, 57));
printd("%s %02x %02x %s\n", osmo_hexdump((uint8_t *)bursts_s + 116, 57),
(uint8_t)bursts_s[57 + 116], (uint8_t)bursts_s[58 + 116],
osmo_hexdump((uint8_t *)bursts_s + 59 + 116, 57));
printd("%s %02x %02x %s\n", osmo_hexdump((uint8_t *)bursts_s + 232, 57),
(uint8_t)bursts_s[57 + 232], (uint8_t)bursts_s[58 + 232],
osmo_hexdump((uint8_t *)bursts_s + 59 + 232, 57));
printd("%s %02x %02x %s\n", osmo_hexdump((uint8_t *)bursts_s + 348, 57),
(uint8_t)bursts_s[57 + 348], (uint8_t)bursts_s[58 + 348],
osmo_hexdump((uint8_t *)bursts_s + 59 + 348, 57));
/* destroy */
memset(bursts_s, 0, 30);
memset(bursts_s + 116, 0, 30);
/* decode */
xcch_decode(result, bursts_s);
printd("Decoded: %s\n", osmo_hexdump(result, 23));
ASSERT_TRUE(!memcmp(l2, result, 23));
printd("\n");
}
static void test_rach(uint8_t bsic, uint8_t ra)
{
uint8_t result;
ubit_t bursts_u[36];
sbit_t bursts_s[36];
printd("Encoding: %02x\n", ra);
/* encode */
rach_encode(bursts_u, &ra, bsic);
printd("U-Bits:\n");
printd("%s\n", osmo_hexdump(bursts_u, 36));
ubits2sbits(bursts_u, bursts_s, 36);
printd("S-Bits:\n");
printd("%s\n", osmo_hexdump((uint8_t *)bursts_s, 36));
/* destroy */
memset(bursts_s + 6, 0, 8);
/* decode */
rach_decode(&result, bursts_s, bsic);
printd("Decoded: %02x\n", result);
ASSERT_TRUE(ra == result);
printd("\n");
}
static void test_sch(uint8_t *info)
{
uint8_t result[4];
ubit_t bursts_u[78];
sbit_t bursts_s[78];
/* zero bits 25 and above */
info[3] &= 1;
result[3] = 0;
printd("Encoding: %s\n", osmo_hexdump(info, 4));
/* encode */
sch_encode(bursts_u, info);
printd("U-Bits:\n");
printd("%s\n", osmo_hexdump(bursts_u, 78));
ubits2sbits(bursts_u, bursts_s, 78);
printd("S-Bits:\n");
printd("%s\n", osmo_hexdump((uint8_t *)bursts_s, 78));
/* destroy */
memset(bursts_s + 6, 0, 10);
/* decode */
sch_decode(result, bursts_s);
printd("Decoded: %s\n", osmo_hexdump(result, 4));
ASSERT_TRUE(!memcmp(info, result, 4));
printd("\n");
}
uint8_t test_l2[][23] = {
/* dummy frame */
{ 0x03, 0x03, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
/* random frame */
{ 0xa3, 0xaf, 0x5f, 0xc6, 0x36, 0x43, 0x44, 0xab,
0xd9, 0x6d, 0x7d, 0x62, 0x24, 0xc9, 0xd2, 0x92,
0xfa, 0x27, 0x5d, 0x71, 0x7a, 0x59, 0xa8 },
/* jolly frame */
{ 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17 },
};
int main(int argc, char **argv)
{
int i;
for (i = 0; i < sizeof(test_l2) / sizeof(test_l2[0]); i++)
test_xcch(test_l2[i]);
for (i = 0; i < 256; i++) {
test_rach(0x3f, i);
test_rach(0x00, i);
test_rach(0x1a, i);
}
for (i = 0; i < sizeof(test_l2) / sizeof(test_l2[0]); i++)
test_sch(test_l2[i]);
printf("Success\n");
return 0;
}

1
tests/bursts/bursts_test.ok Normal file
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@ -0,0 +1 @@
Success

6
tests/testsuite.at
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@ -18,3 +18,9 @@ AT_KEYWORDS([cipher])
cat $abs_srcdir/cipher/cipher_test.ok > expout
AT_CHECK([$OSMO_QEMU $abs_top_builddir/tests/cipher/cipher_test], [], [expout], [ignore])
AT_CLEANUP
AT_SETUP([bursts])
AT_KEYWORDS([bursts])
cat $abs_srcdir/cipher/bursts_test.ok > expout
AT_CHECK([$abs_top_builddir/tests/bursts/bursts_test], [], [expout], [ignore])
AT_CLEANUP