@@ -414,8 +414,16 @@
 def main() { twice(1) };
 main()
 	`) );
 }
+unittest
+{
+	auto e = new Evaluator;
+	enrollRuntimeLibrary(e);
+	assert_nothrow( e.evalString(`case 1`) );
+	assert_nothrow( e.evalString(`case 1 when 1: 2`) );
+}
+
 /*
 unittest
 {
 	assert_eq( evalString(`var fac = fun(x){