From 945b82a3caf0c112d01c1a18c6b9c052cc87e285 Mon Sep 17 00:00:00 2001
From: Samuel Walker <swalker@piwalker.net>
Date: Thu, 30 Jan 2025 15:17:54 -0700
Subject: [PATCH] added cart unit tests

---
 include/cart.h |  4 +++-
 lib/cart.c     |  8 ++++++--
 tests/test.c   | 15 +++++++++++++++
 3 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/include/cart.h b/include/cart.h
index b8bd113..464625e 100644
--- a/include/cart.h
+++ b/include/cart.h
@@ -19,4 +19,6 @@ typedef struct {
     u16 global_checksum;
 } rom_header;
 
-bool cart_load(char *cart);
\ No newline at end of file
+bool cart_load(char *cart);
+
+rom_header *get_rom_header();
\ No newline at end of file
diff --git a/lib/cart.c b/lib/cart.c
index 618b136..39753b8 100644
--- a/lib/cart.c
+++ b/lib/cart.c
@@ -5,9 +5,9 @@ typedef struct {
     u32 rom_size;
     u8 *rom_data;
     rom_header *header;
-} cert_context;
+} cart_context;
 
-static cert_context ctx;
+static cart_context ctx;
 
 static const char *ROM_TYPES[] = {
     "ROM ONLY",
@@ -111,6 +111,10 @@ static const char *LIC_CODE[0xA5] = {
     [0xA4] = "Konami (Yu-Gi-Oh!)"
 };
 
+rom_header *get_rom_header() {
+    return ctx.header;
+}
+
 const char *cart_type_name() {
     if(ctx.header->type <= 0x22) {
         return ROM_TYPES[ctx.header->type];
diff --git a/tests/test.c b/tests/test.c
index 8311738..f7bb279 100644
--- a/tests/test.c
+++ b/tests/test.c
@@ -5,17 +5,32 @@
 #include <emu.h>
 
 #include <cpu.h>
+#include <cart.h>
 
 START_TEST(test_nothing) {
     bool b = cpu_step();
     ck_assert_uint_eq(b, false);
 } END_TEST
 
+START_TEST(test_cart) {
+    bool b = cart_load("../../roms/cpu_instrs.gb");
+    ck_assert_uint_eq(b, true);
+    rom_header *header = get_rom_header();
+    ck_assert_str_eq(header->title, "CPU_INSTRS");
+    ck_assert_uint_eq(header->type, 0x01);
+    ck_assert_uint_eq(header->rom_size, 0x01);
+    ck_assert_uint_eq(header->ram_size, 0x00);
+    ck_assert_uint_eq(header->lic_code, 0x00);
+    ck_assert_uint_eq(header->version, 0x00);
+    ck_assert_uint_eq(header->checksum, 0x3B);
+} END_TEST
+
 Suite *stack_suite() {
     Suite *s = suite_create("emu");
     TCase *tc = tcase_create("core");
 
     tcase_add_test(tc, test_nothing);
+    tcase_add_test(tc, test_cart);
     suite_add_tcase(s, tc);
 
     return s;