Add tests for Allocator implementations

tests/allocator/test_allocator.c

@@ -0,0 +1,37 @@
+#include "test_allocator.h"
+#include "libc/mem_libc.h"
+#include "mem_allocator.h"
+#include "mem_arena.h"
+#include "tester.h"
+#include <stdbool.h>
+#include <stdlib.h>
+
+TestFuncResult test_libc_allocator(void) {
+  Allocator allocator = wapp_mem_libc_allocator();
+  bool result = allocator.obj == NULL && allocator.alloc != NULL &&
+                allocator.alloc_aligned != NULL && allocator.realloc != NULL &&
+                allocator.realloc_aligned == NULL && allocator.free != NULL;
+  void *ptr = wapp_mem_allocator_alloc(&allocator, 20);
+  result = result && (ptr != NULL);
+
+  if (ptr != NULL) {
+    wapp_mem_allocator_free(&allocator, &ptr);
+    result = result && (ptr == NULL);
+  }
+
+  return wapp_tester_result(result);
+}
+
+TestFuncResult test_arena_allocator(void) {
+  Allocator allocator = wapp_mem_arena_allocator_init(4096);
+  bool result = allocator.obj != NULL && allocator.alloc != NULL &&
+                allocator.alloc_aligned != NULL &&
+                allocator.realloc == NULL & allocator.realloc_aligned == NULL &&
+                allocator.free == NULL;
+  void *ptr = wapp_mem_allocator_alloc(&allocator, 20);
+  result = result && (ptr != NULL);
+
+  wapp_mem_arena_allocator_destroy(&allocator);
+
+  return wapp_tester_result(result);
+}