[functional testing] Load webdriver

tasks/loadFixtures.js

@@ -6,16 +6,17 @@ var colors = require('ansicolors');
 
 module.exports = function (grunt) {
   grunt.registerTask('loadFixtures', 'Loads fixtures into elasticsearch', function () {
+    const FIXTURES_PATH = path.join(grunt.config.get('root'), 'test/fixtures');
+
     const config = this.options();
     const done = this.async();
-    const fixturesPath = path.join(grunt.config.get('root'), 'test/fixtures');
 
-    fs.readdir(fixturesPath, function (err, files) {
+    fs.readdir(FIXTURES_PATH, function (err, files) {
       if (err) grunt.fail.warn(err);
 
       let doneProcessing = 0;
       files.forEach(function (file) {
-        fs.createReadStream(path.join(fixturesPath, file))
+        fs.createReadStream(path.join(FIXTURES_PATH, file))
         .pipe(request.post(`${config.server}/_bulk`, function (err, res, body) {
           if (err || res.statusCode !== 200) grunt.fail.warn(err || body);
           grunt.log.write(`[${colors.green('success')}] ${file}`);

tasks/startSelenium.js

@@ -0,0 +1,84 @@
+var _ = require('lodash');
+var request = require('request');
+var fs = require('fs');
+var path = require('path');
+var colors = require('ansicolors');
+var crypto = require('crypto');
+var {spawn} = require('child_process');
+
+module.exports = function (grunt) {
+  grunt.registerTask('startSelenium', 'Start an instance of selenium standalone', function () {
+    const done = this.async();
+    const config = _.defaults(this.options(), {
+      seleniumStandalone: {
+        filename: 'selenium-server-standalone-2.47.1.jar',
+        server: 'https://selenium-release.storage.googleapis.com/2.47/',
+        md5: 'e6cb10b8f0f353c6ca4a8f62fb5cb472'
+      }
+    });
+
+    const SELENIUM_DIRECTORY = path.join(grunt.config.get('root'), 'selenium');
+    const SELENIUM_FILE_PATH = path.join(SELENIUM_DIRECTORY, config.seleniumStandalone.filename);
+    const SELENIUM_DOWNLOAD_URL = config.seleniumStandalone.server + config.seleniumStandalone.filename;
+    const SELENIUM_HASH = config.seleniumStandalone.md5;
+
+    function waitForReadiness(seleniumProcess, ready) {
+      seleniumProcess.stderr.on('data', function (log) {
+        if (~log.toString('utf8').indexOf('Selenium Server is up and running')) {
+          grunt.log.writeln('Selenium standalone started on port 4444');
+          done();
+        }
+      });
+
+      process.on('exit', function () {
+        seleniumProcess.kill();
+      });
+    }
+
+    function validateDownload(path, expectedHash, success) {
+      grunt.log.write('Validating hash...');
+      fs.readFile(path, function (err, data) {
+        if (err) grunt.fail.warn(err);
+        const calculatedHash = crypto.createHash('md5').update(data).digest('hex');
+        if (calculatedHash !== expectedHash) return grunt.fail.warn('Selenium download has an invalid hash');
+        grunt.log.writeln('done');
+        success();
+      });
+    }
+
+    function spawnSelenium() {
+      var seleniumProcess = spawn('java', ['-jar', SELENIUM_FILE_PATH]);
+      waitForReadiness(seleniumProcess);
+    }
+
+    function downloadSelenium(success) {
+      grunt.log.write(`Downloading ${SELENIUM_DOWNLOAD_URL}...`);
+      request.get(SELENIUM_DOWNLOAD_URL)
+      .pipe(fs.createWriteStream(SELENIUM_FILE_PATH))
+      .on('finish', function () {
+        grunt.log.writeln('done');
+        validateDownload(SELENIUM_FILE_PATH, SELENIUM_HASH, success);
+      })
+      .on('error', function (err) {
+        grunt.fail.warn(err);
+      });
+    }
+
+
+    function start() {
+      fs.mkdir(SELENIUM_DIRECTORY, function (err) {
+        if (err && err.code !== 'EEXIST') grunt.fail.warn(err);
+        fs.exists(SELENIUM_FILE_PATH, function (exists) {
+          if (exists) {
+            spawnSelenium();
+          } else {
+            downloadSelenium(spawnSelenium);
+          }
+        });
+      });
+    }
+
+    start();
+
+  });
+};

tasks/test.js

@@ -17,6 +17,7 @@ module.exports = function (grunt) {
   grunt.registerTask('test:ui', [
     'esvm:ui',
     'loadFixtures',
+    'startSelenium',
     'run:testUIServer',
     'intern:dev'
   ]);