1 files changed, 128 insertions, 0 deletions
diff --git a/cmd/sbc_harness/tests/test_ihex.c b/cmd/sbc_harness/tests/test_ihex.c
new file mode 100644
index 0000000..143e3b4
--- /dev/null
+++ b/cmd/sbc_harness/tests/test_ihex.c
@@ -0,0 +1,128 @@
+/* cmd/sbc_harness/tests/test_ihex.c - Tests for ihex.c
+ *
+ * Copyright (C) 2025  Luke T. Shumaker <lukeshu@lukeshu.com>
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+#include <stdio.h> /* for putchar() */
+#include <string.h>
+
+#include <libmisc/fmt.h>
+
+#include "ihex.h"
+
+struct stdout { size_t len; };
+LO_IMPLEMENTATION_STATIC(fmt_dest, struct stdout, stdout);
+static void stdout_putb(struct stdout *self, uint8_t b) {
+	putchar(b);
+	self->len++;
+}
+static size_t stdout_tell(struct stdout *self) {
+	return self->len;
+}
+
+static lo_interface fmt_dest fmt_stdout = lo_box_stdout_as_fmt_dest(&((struct stdout){}));
+
+#define test_assert(expr) do {                                                            \
+		if (!(expr))                                                              \
+			fmt_print(                                                        \
+				fmt_stdout,                                               \
+				"test failure: ", __FILE__, ":", __LINE__, ":", __func__, \
+				": " #expr "\n");                                         \
+	} while (0)
+
+static char *input =
+	/* ,-byte count
+	 * | ,-address
+	 * | |   ,-record type
+	 * | |   |                                 ,- checksum
+	 *[][--][][..............................][]\r\n */
+	":020000041000EA\r\n"                             /* base_addr = linear(0x1000) = 0x1000<<16 */
+	":1000000000B5324B212058609868022188439860DF\r\n" /* memcpy(chip[base_addr+0x0000], "\x00\xB5\x32\x4B\x21\x20\x58\x60\x98\x68\x02\x21\x88\x43\x98\x60", 16) */
+	":10001000D860186158612E4B002199600221596106\r\n" /* memcpy(chip[base_addr+0x0010], "\xD8\x60\x18\x61\x58\x61\x2E\x4B\x00\x21\x99\x60\x02\x21\x59\x61", 16) */
+	":10BE9C000000000000000000000000000000000096\r\n" /* memcpy(chip[base_addr+0xBE9C], "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 16) */
+	":04BEAC00CC4A00205C\r\n"                         /* memcpy(chip[base_addr+0xBEAC], "\x00\xCC\x4A\x00\x20", 5) */
+	":04000005100001E9FD\r\n"                         /* start_exec_at = linear(0x100001E9) */
+	":00000001FF\r\n";                                /* EOF */
+
+static int cnt = 0;
+
+static error handle_data(void *, uint32_t off, uint8_t count, uint8_t *dat) {
+	switch (cnt) {
+	case 0:
+		test_assert(off == UINT32_C(0x10000000));
+		test_assert(count == 16);
+		test_assert(memcmp(dat, "\x00\xB5\x32\x4B\x21\x20\x58\x60\x98\x68\x02\x21\x88\x43\x98\x60", 16) == 0);
+		break;
+	case 1:
+		test_assert(off == UINT32_C(0x10000010));
+		test_assert(count == 16);
+		test_assert(memcmp(dat, "\xD8\x60\x18\x61\x58\x61\x2E\x4B\x00\x21\x99\x60\x02\x21\x59\x61", 16) == 0);
+		break;
+	case 2:
+		test_assert(off == UINT32_C(0x1000BE9C));
+		test_assert(count == 16);
+		test_assert(memcmp(dat, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 16) == 0);
+		break;
+	case 4:
+		test_assert(off == UINT32_C(0x1000BE9C));
+		test_assert(count == 5);
+		test_assert(memcmp(dat, "\x00\xCC\x4A\x00\x20", 5) == 0);
+		break;
+	default:
+		test_assert(false);
+	}
+	cnt++;
+	return ERROR_NULL;
+}
+static error handle_set_exec_start_seg(void *, uint16_t LM_UNUSED(cs), uint16_t LM_UNUSED(ip)) {
+	switch (cnt) {
+	default:
+		test_assert(false);
+	}
+	cnt++;
+	return ERROR_NULL;
+}
+static error handle_set_exec_start_lin(void *, uint32_t eip) {
+	switch (cnt) {
+	case 5:
+		test_assert(eip == UINT32_C(0x100001E9));
+		break;
+	default:
+		test_assert(false);
+	}
+	cnt++;
+	return ERROR_NULL;
+}
+static error handle_eof(void *) {
+	switch (cnt) {
+	case 6:
+		break;
+	default:
+		test_assert(false);
+	}
+	cnt++;
+	return ERROR_NULL;
+}
+
+int main() {
+	struct ihex_decoder dec = {
+		.handle_data = handle_data,
+		.handle_set_exec_start_seg = handle_set_exec_start_seg,
+		.handle_set_exec_start_lin = handle_set_exec_start_lin,
+		.handle_eof = handle_eof,
+	};
+
+	size_t_and_error ret = ihex_decoder_writev(&dec, &((struct iovec){
+				.iov_base = input,
+				.iov_len = strlen(input),
+			}), 1);
+	fmt_print(fmt_stdout,
+	          "ret = (", ret.size_t, ", ", (error, ret.err), ")\n",
+	          "cnt = ", cnt, "\n");
+	test_assert(ret.size_t == strlen(input));
+	test_assert(ERROR_IS_NULL(ret.err));
+	test_assert(cnt == 6);
+
+	return 0;
+}