Add testing infrastructure

tests/main.c

@@ -0,0 +1,31 @@
+#define MUNIT_ENABLE_ASSERT_ALIASES
+#include "munit.h"
+#include <stdlib.h>
+#include "utils.h"
+
+static MunitResult test_hex_to_byte(const MunitParameter params[], void *data) {
+  (void)params;
+  (void)data;
+
+  assert_uchar(hex_to_byte('0'), ==, 0);
+  assert_uchar(hex_to_byte('a'), ==, 10);
+  assert_uchar(hex_to_byte('f'), ==, 15);
+
+  return MUNIT_OK;
+}
+
+static MunitTest test_suite_tests[] = {
+    {"/hex_to_byte", test_hex_to_byte, NULL, NULL, MUNIT_TEST_OPTION_NONE, NULL},
+    {NULL, NULL, NULL, NULL, MUNIT_TEST_OPTION_NONE, NULL}};
+
+static const MunitSuite test_suite = {
+  (char*) "",
+  test_suite_tests,
+  NULL,
+  1,
+  MUNIT_SUITE_OPTION_NONE
+};
+  
+int main(int argc, char* argv[MUNIT_ARRAY_PARAM(argc + 1)]) {
+  return munit_suite_main(&test_suite, NULL, argc, argv);
+}