Style improvements (#2475)

* HooksRouter is enabled by default

* Adds middleswares on PromiseRouter, fixes #2410

* Move testing line to helper

* Modernize middlewares.js

* Moves DB uniqueness initialization to DBController, modernize

* Moves testing related code to spec folder

* remove unused _removeHook function

* Adds tests, docs for Analytics and improvements

* nit

* moves back TestUtils

spec/testing-routes.js

@@ -0,0 +1,72 @@
+// testing-routes.js
+import AppCache         from '../src/cache';
+import * as middlewares from '../src/middlewares';
+import { ParseServer }  from '../src/index';
+import { Parse }        from 'parse/node';
+
+var express = require('express'),
+  cryptoUtils = require('../src/cryptoUtils');
+
+var router = express.Router();
+
+// creates a unique app in the cache, with a collection prefix
+function createApp(req, res) {
+  var appId = cryptoUtils.randomHexString(32);
+
+  ParseServer({
+    databaseURI: 'mongodb://localhost:27017/parseServerMongoAdapterTestDatabase',
+    appId: appId,
+    masterKey: 'master',
+    serverURL: Parse.serverURL,
+    collectionPrefix: appId
+  });
+  var keys = {
+    'application_id': appId,
+    'client_key'    : 'unused',
+    'windows_key'   : 'unused',
+    'javascript_key': 'unused',
+    'webhook_key'   : 'unused',
+    'rest_api_key'  : 'unused',
+    'master_key'    : 'master'
+  };
+  res.status(200).send(keys);
+}
+
+// deletes all collections that belong to the app
+function clearApp(req, res) {
+  if (!req.auth.isMaster) {
+    return res.status(401).send({ "error": "unauthorized" });
+  }
+  return req.config.database.deleteEverything().then(() => {
+    res.status(200).send({});
+  });
+}
+
+// deletes all collections and drops the app from cache
+function dropApp(req, res) {
+  if (!req.auth.isMaster) {
+    return res.status(401).send({ "error": "unauthorized" });
+  }
+  return req.config.database.deleteEverything().then(() => {
+    AppCache.del(req.config.applicationId);
+    res.status(200).send({});
+  });
+}
+
+// Lets just return a success response and see what happens.
+function notImplementedYet(req, res) {
+  res.status(200).send({});
+}
+
+router.post('/rest_clear_app', middlewares.handleParseHeaders, clearApp);
+router.post('/rest_block', middlewares.handleParseHeaders, notImplementedYet);
+router.post('/rest_mock_v8_client', middlewares.handleParseHeaders, notImplementedYet);
+router.post('/rest_unmock_v8_client', middlewares.handleParseHeaders, notImplementedYet);
+router.post('/rest_verify_analytics', middlewares.handleParseHeaders, notImplementedYet);
+router.post('/rest_create_app', createApp);
+router.post('/rest_drop_app', middlewares.handleParseHeaders, dropApp);
+router.post('/rest_configure_app', middlewares.handleParseHeaders, notImplementedYet);
+
+module.exports = {
+  router: router
+};