diff --git a/tests/singleton_test.aer b/tests/singleton_test.aer
index edad82a..ec7fc02 100644
--- a/tests/singleton_test.aer
+++ b/tests/singleton_test.aer
@@ -2,6 +2,11 @@ final class Test {
 	private int $value;
 
 	private void __construct() {
+		print('Constructor called.' + "\n");
+	}
+
+	private void __destruct() {
+		print('Destructor called.' + "\n");
 	}
 
 	/* This is singleton */
diff --git a/tests/singleton_test.exp b/tests/singleton_test.exp
index a3b0315..010362b 100644
--- a/tests/singleton_test.exp
+++ b/tests/singleton_test.exp
@@ -1 +1,3 @@
+Constructor called.
 int(5)
+Destructor called.
\ No newline at end of file