feat: initial commit, basic arena

test/niarena_test_alloc_buffer.c

@@ -0,0 +1,46 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int call_count = 0;
+void *
+bad_malloc(size_t sz)
+{
+	call_count++;
+	if(call_count != 2) {
+		return malloc(sz);
+	}
+	return NULL;
+}
+#define NIARENA_MALLOC(sz) bad_malloc(sz)
+
+void
+mock_free(void *p)
+{
+	free(p);
+}
+#define NIARENA_FREE(p) mock_free(p)
+
+#define N_INTS_TEST 4
+#define NIARENA_ARENA_SIZE (N_INTS_TEST * sizeof(int))
+#define NIARENA_IMPLEMENTATION
+
+#include "../niarena.h"
+#include <assert.h>
+#include <string.h>
+
+void
+niarena_test_malloc_fail_buffer()
+{
+	NIArena *arena = niarena_new();
+	assert(arena == NULL);
+	const char *err = niarena_get_error();
+	assert(strcmp(err, "niarena_new: out of memory allocating buffer") == 0);
+}
+
+int
+main()
+{
+	niarena_test_malloc_fail_buffer();
+	printf("== TESTS SUCCESSFUL ==\n");
+	return 0;
+}