diff --git a/autotest/EscTest/EscTest.cpp b/autotest/EscTest/EscTest.cpp
index 4087ce5cc..cb4adf1d4 100644
--- a/autotest/EscTest/EscTest.cpp
+++ b/autotest/EscTest/EscTest.cpp
@@ -138,4 +138,9 @@ CONSOLE_APP_MAIN
 	DDUMP(global.Get("out"));
 	DDUMP(global.Get("out2"));
 	DDUMP(global.Get("out3"));
+	DDUMP(global.Get("out4"));
+
+	ASSERT(AsString(global.Get("out")) == "{ \"a\":123, \"b\":\"Hello!\" }");
+	ASSERT(AsString(global.Get("out2")) == "\"test\"");
+	ASSERT(AsString(global.Get("out3")) == "[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 ]");
 }
diff --git a/autotest/EscTest/script.esc b/autotest/EscTest/script.esc
index a75a7fa9c..b9fa440eb 100644
--- a/autotest/EscTest/script.esc
+++ b/autotest/EscTest/script.esc
@@ -14,4 +14,8 @@ main() {
 	:out3 = [];
 	for(i = 0; i < 10; i++)
 		:out3[] = i;
+
+	a = Zero();
+	if(a == 0)
+		:out4 = 1;
 }