tests: add munit testing framework, helpers, and initial suite

2026-07-18 16:46:08 -05:00
parent 11e20ef2f0
commit 1ed36d0973
4 changed files with 2838 additions and 0 deletions
@@ -0,0 +1,101 @@
+#include "munit.h"
+#include "chip8.h"
+#include "test_helpers.h"
+
+static MunitResult test_init(const MunitParameter params[], void* data) {
+  (void)params;
+  (void)data;
+
+  chip_eight_t chip;
+  chip8_init(&chip);
+
+  munit_assert_uint16(chip.pc, ==, PROGRAM_START);
+  munit_assert_uint8(chip.dt, ==, 0);
+  munit_assert_uint8(chip.st, ==, 0);
+  munit_assert_false(chip.waiting_for_key);
+
+  return MUNIT_OK;
+}
+
+static MunitResult test_cls(const MunitParameter params[], void* data) {
+  (void)params;
+  (void)data;
+
+  chip_eight_t chip;
+  chip8_init(&chip);
+
+  for (int i = 0; i < SCREEN_WIDTH * SCREEN_HEIGHT; i++) {
+    chip.display[i] = 1;
+  }
+
+  write_clear_screen_instruction(&chip);
+
+  chip8_step(&chip);
+
+  for (int i = 0; i < SCREEN_WIDTH * SCREEN_HEIGHT; i++) {
+    munit_assert_uint32(chip.display[i], ==, 0);
+  }
+
+  munit_assert_uint16(chip.pc, ==, PROGRAM_START + 2);
+
+  return MUNIT_OK;
+}
+
+static MunitResult test_ret(const MunitParameter params[], void* data) {
+  (void)params;
+  (void)data;
+
+  chip_eight_t chip;
+  chip8_init(&chip);
+
+  chip.sc = 1;
+  chip.stack[0] = 1;
+
+  write_return_instruction(&chip);
+
+  chip8_step(&chip);
+
+  munit_assert_uint8(chip.sc, ==, 0);
+  munit_assert_uint16(chip.pc, ==, 1);
+
+  return MUNIT_OK;
+}
+
+static MunitResult test_add_carry(const MunitParameter params[], void* data) {
+  (void)params;
+  (void)data;
+
+  chip_eight_t chip;
+  chip8_init(&chip);
+
+  chip.V[0] = 200;
+  chip.V[1] = 100;
+
+  write_add_registers_instruction(&chip, 0, 1);
+
+  chip8_step(&chip);
+
+  munit_assert_uint8(chip.V[15], ==, 1);
+
+  return MUNIT_OK;
+}
+
+static MunitTest tests[] = {
+  { "/init", test_init, NULL, NULL, MUNIT_TEST_OPTION_NONE, NULL },
+  { "/cls", test_cls, NULL, NULL, MUNIT_TEST_OPTION_NONE, NULL },
+  { "/test_ret", test_ret, NULL, NULL, MUNIT_TEST_OPTION_NONE, NULL },
+  { "/test_add_carry", test_add_carry, NULL, NULL, MUNIT_TEST_OPTION_NONE, NULL },
+  { NULL, NULL, NULL, NULL, MUNIT_TEST_OPTION_NONE, NULL }
+};
+
+static const MunitSuite suite = {
+  "/chip8",
+  tests,
+  NULL,
+  1,
+  MUNIT_SUITE_OPTION_NONE
+};
+
+int main(int argc, char* argv[]) {
+  return munit_suite_main(&suite, NULL, argc, argv);
+}