import/require xit, fixes #2972

Author: solodynamo

lib/mocha.js

@@ -204,6 +204,7 @@ Mocha.prototype.ui = function (name) {
     exports.before = context.before || context.suiteSetup;
     exports.describe = context.describe || context.suite;
     exports.it = context.it || context.test;
+    exports.xit = context.xit || context.test.skip;
     exports.setup = context.setup || context.beforeEach;
     exports.suiteSetup = context.suiteSetup || context.before;
     exports.suiteTeardown = context.suiteTeardown || context.after;