index.js

var window              = require('global');
var MockXMLHttpRequest  = require('./lib/MockXMLHttpRequest');
var real                = window.XMLHttpRequest;
var mock                = MockXMLHttpRequest;

/**
 * Mock utility
 */
module.exports = {

	XMLHttpRequest: MockXMLHttpRequest,

	/**
	 * Replace the native XHR with the mocked XHR
	 * @returns {exports}
	 */
	setup: function() {
		window.XMLHttpRequest = mock;
		MockXMLHttpRequest.handlers = [];
		return this;
	},

	/**
	 * Replace the mocked XHR with the native XHR and remove any handlers
	 * @returns {exports}
	 */
	teardown: function() {
		MockXMLHttpRequest.handlers = [];
		window.XMLHttpRequest = real;
		return this;
	},

	/**
	 * Mock a request
	 * @param   {string}    [method]
	 * @param   {string}    [url]
	 * @param   {Function}  fn
	 * @returns {exports}
	 */
	mock: function(method, url, fn) {
		var handler;
		if (arguments.length === 3) {
			handler = function(req, res) {
				if (req.method() === method && req.url() === url) {
					return fn(req, res);
				}
				return false;
			};
		} else {
			handler = method;
		}

		MockXMLHttpRequest.addHandler(handler);

		return this;
	},

	/**
	 * Mock a GET request
	 * @param   {String}    url
	 * @param   {Function}  fn
	 * @returns {exports}
	 */
	get: function(url, fn) {
		return this.mock('GET', url, fn);
	},

	/**
	 * Mock a POST request
	 * @param   {String}    url
	 * @param   {Function}  fn
	 * @returns {exports}
	 */
	post: function(url, fn) {
		return this.mock('POST', url, fn);
	},

	/**
	 * Mock a PUT request
	 * @param   {String}    url
	 * @param   {Function}  fn
	 * @returns {exports}
	 */
	put: function(url, fn) {
		return this.mock('PUT', url, fn);
	},

	/**
	 * Mock a PATCH request
	 * @param   {String}    url
	 * @param   {Function}  fn
	 * @returns {exports}
	 */
	patch: function(url, fn) {
		return this.mock('PATCH', url, fn);
	},

	/**
	 * Mock a DELETE request
	 * @param   {String}    url
	 * @param   {Function}  fn
	 * @returns {exports}
	 */
	delete: function(url, fn) {
		return this.mock('DELETE', url, fn);
	}

};