tests/conv: separate test logic
To be able to add some more tests, related to convolutional coding,
without duplication of code, the test logic was separated from the
conv_test.c into conv.c and conv.h.
Change-Id: Idbdc7e19cb9b9a36cd1fccd621cd858e87530d98
diff --git a/tests/conv/conv.c b/tests/conv/conv.c
new file mode 100644
index 0000000..7dac155
--- /dev/null
+++ b/tests/conv/conv.c
@@ -0,0 +1,143 @@
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <time.h>
+
+#include <osmocom/core/bits.h>
+#include <osmocom/core/conv.h>
+#include <osmocom/core/utils.h>
+
+#include "conv.h"
+
+static void fill_random(ubit_t *b, int n)
+{
+ int i;
+
+ for (i = 0; i < n; i++)
+ b[i] = random() & 1;
+}
+
+int do_check(const struct conv_test_vector *test)
+{
+ ubit_t *bu0, *bu1;
+ sbit_t *bs;
+ int len, j;
+
+ bu0 = malloc(sizeof(ubit_t) * MAX_LEN_BITS);
+ bu1 = malloc(sizeof(ubit_t) * MAX_LEN_BITS);
+ bs = malloc(sizeof(sbit_t) * MAX_LEN_BITS);
+
+ srandom(time(NULL));
+
+ /* Test name */
+ printf("[+] Testing: %s\n", test->name);
+
+ /* Check length */
+ len = osmo_conv_get_input_length(test->code, 0);
+ printf("[.] Input length : ret = %3d exp = %3d -> %s\n",
+ len, test->in_len, len == test->in_len ? "OK" : "Bad !");
+
+ if (len != test->in_len) {
+ fprintf(stderr, "[!] Failure for input length computation\n");
+ return -1;
+ }
+
+ len = osmo_conv_get_output_length(test->code, 0);
+ printf("[.] Output length : ret = %3d exp = %3d -> %s\n",
+ len, test->out_len, len == test->out_len ? "OK" : "Bad !");
+
+ if (len != test->out_len) {
+ fprintf(stderr, "[!] Failure for output length computation\n");
+ return -1;
+ }
+
+ /* Check pre-computed vector */
+ if (test->has_vec) {
+ printf("[.] Pre computed vector checks:\n");
+
+ printf("[..] Encoding: ");
+
+ osmo_pbit2ubit(bu0, test->vec_in, test->in_len);
+
+ len = osmo_conv_encode(test->code, bu0, bu1);
+ if (len != test->out_len) {
+ printf("ERROR !\n");
+ fprintf(stderr, "[!] Failed encoding length check\n");
+ return -1;
+ }
+
+ osmo_pbit2ubit(bu0, test->vec_out, test->out_len);
+
+ if (memcmp(bu0, bu1, test->out_len)) {
+ printf("ERROR !\n");
+ fprintf(stderr, "[!] Failed encoding: Results don't match\n");
+ return -1;
+ };
+
+ printf("OK\n");
+
+
+ printf("[..] Decoding: ");
+
+ osmo_ubit2sbit(bs, bu0, len);
+
+ len = osmo_conv_decode(test->code, bs, bu1);
+ if (len != 0) {
+ printf("ERROR !\n");
+ fprintf(stderr, "[!] Failed decoding: non-zero path (%d)\n", len);
+ return -1;
+ }
+
+ osmo_pbit2ubit(bu0, test->vec_in, test->in_len);
+
+ if (memcmp(bu0, bu1, test->in_len)) {
+ printf("ERROR !\n");
+ fprintf(stderr, "[!] Failed decoding: Results don't match\n");
+ return -1;
+ }
+
+ printf("OK\n");
+ }
+
+ /* Check random vector */
+ printf("[.] Random vector checks:\n");
+
+ for (j = 0; j < 3; j++) {
+ printf("[..] Encoding / Decoding cycle : ");
+
+ fill_random(bu0, test->in_len);
+
+ len = osmo_conv_encode(test->code, bu0, bu1);
+ if (len != test->out_len) {
+ printf("ERROR !\n");
+ fprintf(stderr, "[!] Failed encoding length check\n");
+ return -1;
+ }
+
+ osmo_ubit2sbit(bs, bu1, len);
+
+ len = osmo_conv_decode(test->code, bs, bu1);
+ if (len != 0) {
+ printf("ERROR !\n");
+ fprintf(stderr, "[!] Failed decoding: non-zero path (%d)\n", len);
+ return -1;
+ }
+
+ if (memcmp(bu0, bu1, test->in_len)) {
+ printf("ERROR !\n");
+ fprintf(stderr, "[!] Failed decoding: Results don't match\n");
+ return -1;
+ }
+
+ printf("OK\n");
+ }
+
+ /* Spacing */
+ printf("\n");
+
+ free(bs);
+ free(bu1);
+ free(bu0);
+
+ return 0;
+}