add test for short circuit evaluation
diff --git a/test/test-functions.cpp b/test/test-functions.cpp
index 4870205..0f9b6c8 100644
--- a/test/test-functions.cpp
+++ b/test/test-functions.cpp
@@ -157,7 +157,7 @@
     CHECK(env.render("{{ exists(\"zipcode\") }}", data) == "false");
     CHECK(env.render("{{ exists(name) }}", data) == "false");
     CHECK(env.render("{{ exists(property) }}", data) == "true");
-
+    
     // CHECK(env.render("{{ exists(\"keywords\") and length(keywords) > 0 }}", data) == "false");
   }
 
diff --git a/test/test-renderer.cpp b/test/test-renderer.cpp
index fe38738..213722c 100644
--- a/test/test-renderer.cpp
+++ b/test/test-renderer.cpp
@@ -129,6 +129,12 @@
                       "[inja.exception.render_error] (at 1:7) variable 'predefined' not found");
   }
 
+  SUBCASE("short circuit evaluation") {
+    CHECK(env.render("{% if 0 and undefined %}do{% else %}nothing{% endif %}", data) == "nothing");
+    CHECK_THROWS_WITH(env.render("{% if 1 and undefined %}do{% else %}nothing{% endif %}", data),
+                      "[inja.exception.render_error] (at 1:13) variable 'undefined' not found");
+  }
+
   SUBCASE("line statements") {
     CHECK(env.render(R""""(## if is_happy
 Yeah!