diff --git a/test/test_case/simple_add.sy b/test/test_case/simple_add.sy
new file mode 100644
index 0000000..dd3b921
--- /dev/null
+++ b/test/test_case/simple_add.sy
@@ -0,0 +1,5 @@
+int main() {
+  int a = 1;
+  int b = 2;
+  return a + b;
+}