src/spy.js
/**
* @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
* For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
*/
/**
* @module utils/spy
*/
/**
* Creates a spy function (ala Sinon.js) that can be used to inspect call to it.
*
* The following are the present features:
*
* * spy.called: property set to `true` if the function has been called at least once.
*
* @returns {Function} The spy function.
*/
function spy() {
return function spy() {
spy.called = true;
};
}
export default spy;