--- /dev/null
+var fails = require('../internals/fails');
+
+// check the existence of a method, lowercase
+// of a tag and escaping quotes in arguments
+module.exports = function (METHOD_NAME) {
+ return fails(function () {
+ var test = ''[METHOD_NAME]('"');
+ return test !== test.toLowerCase() || test.split('"').length > 3;
+ });
+};