Add testing utilities

src/tester/tester.c

@@ -0,0 +1,48 @@
+#include "tester.h"
+#include "aliases.h"
+#include "termcolour/termcolour.h"
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+internal void print_test_result(TestFuncResult result);
+
+void run_tests(TestFunc *func1, ...) {
+  printf("\n");
+
+  print_test_result(func1());
+
+  va_list args;
+  va_start(args, func1);
+
+  TestFunc *func = NULL;
+
+  while ((func = va_arg(args, TestFunc *))) {
+    TestFuncResult result = func();
+    print_test_result(result);
+
+    if (!result.success) {
+      exit(EXIT_FAILURE);
+    }
+  }
+
+  va_end(args);
+
+  printf("\n");
+}
+
+internal void print_test_result(TestFuncResult result) {
+  const char *colour;
+  const char *result_text;
+
+  if (result.success) {
+    colour = TERM_COLOUR_FG_BR_GREEN;
+    result_text = "PASSED";
+  } else {
+    colour = TERM_COLOUR_FG_BR_RED;
+    result_text = "FAILED";
+  }
+
+  printf("[%s%s%s%s] %s\n", colour, TERM_COLOUR_BOLD, result_text,
+         TERM_COLOUR_CLEAR, result.name);
+}

src/tester/tester.h

@@ -0,0 +1,26 @@
+#ifndef TESTER_H
+#define TESTER_H
+
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+#define TEST_RESULT(BOOL) ((TestFuncResult){.name = __func__, .success = BOOL})
+
+typedef struct test_func_result TestFuncResult;
+struct test_func_result {
+  const char *name;
+  bool success;
+};
+
+typedef TestFuncResult(TestFunc)(void);
+
+void run_tests(TestFunc *func1, ...);
+
+#ifdef __cplusplus
+}
+#endif // __cplusplus
+
+#endif // !TESTER_H