diff --git a/unittests/divide_by_zero_protection.chai b/unittests/divide_by_zero_protection.chai
index ba40a43..db648fc 100644
--- a/unittests/divide_by_zero_protection.chai
+++ b/unittests/divide_by_zero_protection.chai
@@ -5,3 +5,5 @@ try {
   assert_equal("Arithmetic error: divide by zero", e.what())
 }
 
+assert_equal(3/0.0, Infinity)
+