LayoutTests/js/script-tests/string-index-overflow.js - WebKit - Git at Google

 description(
 "This test checks that accessing a string by an out of bounds index doesn't crash, furthermore the string should not appear to have out-of-bounds numeric properties."
 );

 shouldBeUndefined('"x"[10]');
 shouldBeFalse('"x".hasOwnProperty(10)');
	description(
	"This test checks that accessing a string by an out of bounds index doesn't crash, furthermore the string should not appear to have out-of-bounds numeric properties."
	);

	shouldBeUndefined('"x"[10]');
	shouldBeFalse('"x".hasOwnProperty(10)');