2 files changed, 163 insertions, 0 deletions
diff --git a/stacks/max25-bcpr/tests/test_config_offline.c b/stacks/max25-bcpr/tests/test_config_offline.c
new file mode 100644
index 0000000..8b40a6a
--- /dev/null
+++ b/stacks/max25-bcpr/tests/test_config_offline.c
@@ -0,0 +1,53 @@
+/*
+ * Offline config parse test — no UART.
+ */
+#include "bcpr/bcpr_config.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+int main(void)
+{
+    const char *path = "share/max25-bcpr.ini.example";
+    bcpr_config_t cfg;
+    char cwd[512];
+
+    if (!getcwd(cwd, sizeof(cwd))) {
+        return 1;
+    }
+    /* Prefer path relative to build or source. */
+    if (access(path, R_OK) != 0) {
+        path = "../share/max25-bcpr.ini.example";
+    }
+    if (access(path, R_OK) != 0) {
+        path = "../../stacks/max25-bcpr/share/max25-bcpr.ini.example";
+    }
+    if (bcpr_config_load(&cfg, path) != 0) {
+        /* Write a minimal temp INI. */
+        FILE *f = fopen("/tmp/max25-bcpr-test.ini", "w");
+        if (!f) {
+            return 1;
+        }
+        fputs("[max25-bcpr]\ndry_run = yes\nstate_dir = /tmp/max25-bcpr\n"
+              "[bc0]\nserial = /dev/ttyS0\niobase = 0x3f8\nirq = 4\n"
+              "mode = ser12*\nkiss_link = /tmp/max25-bcpr/kiss-bc0\n",
+              f);
+        fclose(f);
+        path = "/tmp/max25-bcpr-test.ini";
+        if (bcpr_config_load(&cfg, path) != 0) {
+            fprintf(stderr, "FAIL: load\n");
+            return 1;
+        }
+    }
+    if (cfg.n_dev < 1 || !cfg.dev[0].enabled) {
+        fprintf(stderr, "FAIL: no bc0\n");
+        return 1;
+    }
+    if (cfg.dev[0].irq != 4 || cfg.dev[0].iobase != 0x3f8) {
+        fprintf(stderr, "FAIL: irq/iobase\n");
+        return 1;
+    }
+    puts("OK: test_config_offline");
+    return 0;
+}
diff --git a/stacks/max25-bcpr/tests/test_hdlc_offline.c b/stacks/max25-bcpr/tests/test_hdlc_offline.c
new file mode 100644
index 0000000..d05d5b6
--- /dev/null
+++ b/stacks/max25-bcpr/tests/test_hdlc_offline.c
@@ -0,0 +1,110 @@
+/*
+ * Offline HDLC unit test — CRC, bitstuff roundtrip, no UART / UART I/O.
+ */
+#include "bcpr/bcpr_crc.h"
+#include "bcpr/bcpr_hdlc.h"
+
+#include <stdio.h>
+#include <string.h>
+
+static int g_got;
+static uint8_t g_rx[BCPR_MAXFLEN + 4];
+static int g_rx_len;
+
+static void on_frame(const uint8_t *kiss, int len, void *ud)
+{
+    (void)ud;
+    if (len > 0 && len <= (int)sizeof(g_rx)) {
+        memcpy(g_rx, kiss, (size_t)len);
+        g_rx_len = len;
+        g_got = 1;
+    }
+}
+
+static int test_crc(void)
+{
+    uint8_t buf[16];
+    memcpy(buf, "TEST", 4);
+    bcpr_append_crc_ccitt(buf, 4);
+    if (!bcpr_check_crc_ccitt(buf, 6)) {
+        fprintf(stderr, "FAIL: CRC check\n");
+        return 1;
+    }
+    buf[0] ^= 0xff;
+    if (bcpr_check_crc_ccitt(buf, 6)) {
+        fprintf(stderr, "FAIL: CRC should fail on corrupt\n");
+        return 1;
+    }
+    return 0;
+}
+
+static int test_roundtrip(void)
+{
+    bcpr_hdlc_t tx, rx;
+    bcpr_channel_t ch = { .tx_delay = 2, .tx_tail = 1, .slottime = 1,
+                          .ppersist = 255, .fulldup = 1 };
+    uint8_t kiss[32];
+    int i, words = 0;
+
+    bcpr_hdlc_init(&tx, 1200, &ch);
+    bcpr_hdlc_init(&rx, 1200, &ch);
+
+    kiss[0] = 0; /* KISS DATA */
+    memcpy(kiss + 1, "HELLO", 5);
+    if (bcpr_hdlc_queue_kiss(&tx, kiss, 6) != 0) {
+        fprintf(stderr, "FAIL: queue\n");
+        return 1;
+    }
+    bcpr_hdlc_arbitrate(&tx);
+    if (!bcpr_hdlc_ptt(&tx)) {
+        fprintf(stderr, "FAIL: PTT not set\n");
+        return 1;
+    }
+
+    g_got = 0;
+    g_rx_len = 0;
+    /* Drain TX bit words into RX putbits path. */
+    for (i = 0; i < 4096 && !g_got; i++) {
+        unsigned w;
+        bcpr_hdlc_transmitter(&tx);
+        w = bcpr_hdlc_getbits(&tx);
+        if (w) {
+            bcpr_hdlc_putbits(&rx, w);
+            words++;
+            bcpr_hdlc_receiver(&rx, on_frame, NULL);
+        } else if (!bcpr_hdlc_ptt(&tx)) {
+            bcpr_hdlc_transmitter(&tx);
+            /* flush remaining */
+            while (!g_got) {
+                w = bcpr_hdlc_getbits(&tx);
+                if (!w) {
+                    break;
+                }
+                bcpr_hdlc_putbits(&rx, w);
+                bcpr_hdlc_receiver(&rx, on_frame, NULL);
+            }
+            break;
+        }
+    }
+
+    if (!g_got) {
+        fprintf(stderr, "FAIL: no RX frame (words=%d)\n", words);
+        return 1;
+    }
+    if (g_rx_len < 6 || g_rx[0] != 0 || memcmp(g_rx + 1, "HELLO", 5) != 0) {
+        fprintf(stderr, "FAIL: payload mismatch len=%d\n", g_rx_len);
+        return 1;
+    }
+    return 0;
+}
+
+int main(void)
+{
+    int rc = 0;
+    rc |= test_crc();
+    rc |= test_roundtrip();
+    if (rc == 0) {
+        puts("OK: test_hdlc_offline");
+    }
+    return rc;
+}