diff --git a/tests/cases/basic_arith.lyte b/tests/cases/basic_arith.lyte
index 9d9033e..83353cd 100644
--- a/tests/cases/basic_arith.lyte
+++ b/tests/cases/basic_arith.lyte
@@ -2,6 +2,10 @@
 // args: --c
 // expected stdout:
 // compilation successful
+
+assert(cond: bool) → void
+
 main {
     var x = 2+2
+    assert(x == 4)
 }