a small snippet to easily mock promises

promiseMock.js

/**
 * 
 * @description
 * 
 * a utility function to help mock promises. Using $q for mocks in tests is a bad practice. tests should not be asyncronous.
 * This mock makes a synchronous promise like mechanism. 
 * I found it answers at least 80% of my use-cases and reduces code significantly. 
 * 
 * Usage: 
 * 
 * `spyOn(MyService,'callApiRequest').andReturn(window.mockPromise()) // ==> will not call any of the callbacks`
 * 
 * To call success, run `window.mockPromise(successResponse)` - set successResponse to whatever you want. 
 * To call error, run `window.mockPromise(null, errorResponse)` - set errorResponse to whatever you want. 
 * 
 * The use of `window` is so we won't get jshint issues. 
 * 
 * 
 **/

'use strict';
window.mockPromise = function(successResponse, errorResponse){
    return {
        then:function(success, error){
            if ( !!successResponse ){
                success(successResponse);
            }

            if (!!errorResponse ){
                error(errorResponse);
            }
        }
    };
};