test(mem-alloc): add normal allocation regression test

Verify existing mem_allocator_malloc still works correctly.

Author: lum1n0us

tests/unit/mem-alloc/mem_alloc_test.c

@@ -32,4 +32,29 @@ is_aligned_allocation(gc_object_t obj)
     return ((*magic_ptr & ALIGNED_ALLOC_MAGIC_MASK) == ALIGNED_ALLOC_MAGIC_VALUE);
 }
 
-/* Tests will be added incrementally */
+/* Test: Normal allocation still works (regression) */
+static void
+test_normal_alloc_basic(void **state)
+{
+    mem_allocator_t allocator;
+    char heap_buf[64 * 1024];
+    void *ptr;
+
+    allocator = mem_allocator_create(heap_buf, sizeof(heap_buf));
+    assert_non_null(allocator);
+
+    /* Normal allocation should still work */
+    ptr = mem_allocator_malloc(allocator, 128);
+    assert_non_null(ptr);
+
+    /* Should be 8-byte aligned */
+    assert_true(is_aligned(ptr, 8));
+
+    /* Should NOT be marked as aligned allocation */
+    assert_false(is_aligned_allocation(ptr));
+
+    /* Free should work */
+    mem_allocator_free(allocator, ptr);
+
+    mem_allocator_destroy(allocator);
+}

tests/unit/mem-alloc/test_runner.c

@@ -16,7 +16,7 @@ int
 main(void)
 {
     const struct CMUnitTest tests[] = {
-        /* Tests will be added incrementally */
+        cmocka_unit_test(test_normal_alloc_basic),
     };
 
     return cmocka_run_group_tests(tests, NULL, NULL);