Add task for running mocha tests with webdriver for testing proxies

tests/mocha/selenium.js

@@ -0,0 +1,73 @@
+var wd = require('wd');
+var http = require("http");
+var https = require("https");
+var url = require("url");
+var path = require("path");
+var Promise = require('bluebird');
+var _ = require('lodash');
+var humanizeDuration = require("humanize-duration");
+var utils = require('../utils');
+var colors = utils.colors;
+var port = 8080;
+
+function runTestWithRetries(browser, test, retries) {
+    retries = retries || 0;
+    return runTest(browser, test)
+        .timeout(30000)
+        .catch(Promise.TimeoutError, function() {
+            if (retries < 3) {
+                console.log(colors.violet, "Retry", (retries + 1), test);
+                return runTestWithRetries(browser, test, retries + 1);
+            } else {
+                throw new Error("Couldn't run test after 3 retries");
+            }
+        });
+}
+
+function getResults(browser) {
+    return function() {
+        return Promise.props({
+            dataUrl: browser.waitForElementByCss("body[data-complete='true']", 90000).then(function() {
+                return browser.elementsByCssSelector('.test.fail');
+            }).then(function(nodes) {
+                return Array.isArray(nodes) ? Promise.map(nodes, function(node) {
+                    return browser.text(node).then(function(error) {
+                        return Promise.reject(error);
+                    });
+                }) : Promise.resolve([]);
+            })
+        });
+    };
+}
+
+function runTest(browser, test) {
+    return Promise.resolve(browser
+        .then(utils.loadTestPage(browser, test, port))
+        .then(getResults(browser))
+    ).cancellable();
+}
+
+exports.tests = function(browsers, singleTest) {
+    var path = "tests/mocha";
+    return (singleTest ? Promise.resolve([singleTest]) : utils.getTests(path)).then(function(tests) {
+        return Promise.map(browsers, function(settings) {
+            var name = [settings.browserName, settings.version, settings.platform].join("-");
+            var count = 0;
+            var browser = utils.initBrowser(settings);
+            return Promise.using(browser, function() {
+                return Promise.map(tests, function(test, index, total) {
+                    console.log(colors.green, "STARTING", "(" + (++count) + "/" + total + ")", name, test, colors.clear);
+                    var start = Date.now();
+                    return runTestWithRetries(browser, test).then(function() {
+                        console.log(colors.green, "COMPLETE", humanizeDuration(Date.now() - start), "(" + count + "/" + total + ")", name, colors.clear);
+                    });
+                }, {concurrency: 1})
+                    .settle()
+                    .catch(function(error) {
+                        console.error(colors.red, "ERROR", name, error);
+                        throw error;
+                    });
+            });
+        }, {concurrency: 3});
+    });
+};