feat(sync): sync now takes a match regex parameter and will not execute sync unl…

…ess the target database name matches the regex

lib/sequelize.js

@@ -607,6 +607,7 @@ module.exports = (function() {
    *
    * @param {Object} [options={}]
    * @param {Boolean} [options.force=false] If force is true, each DAO will do DROP TABLE IF EXISTS ..., before it tries to create its own table
+   * @param {RegEx} [options.match] Match a regex against the database name before syncing, a safety check for cases where force: true is used in tests but not live code
    * @param {Boolean|function} [options.logging=console.log] A function that logs sql queries, or false for no logging
    * @param {String} [options.schema='public'] The schema that the tables should be created in. This can be overriden for each table in sequelize.define
    * @return {Promise}
@@ -617,6 +618,12 @@ module.exports = (function() {
     options = Utils._.defaults(options || {}, this.options.sync, this.options);
     options.logging = options.logging === undefined ? false : options.logging;
 
+    if (options.match) {
+      if (!options.match.test(this.config.database)) {
+        return Promise.reject('Database does not match sync match parameter');
+      }
+    }
+
     var when;
     if (options.force) {
       when = this.drop(options);

test/sequelize.test.js

@@ -706,6 +706,19 @@ describe(Support.getTestDialectTeaser("Sequelize"), function () {
         })
       })
     })
+
+    describe("match", function () {
+      it('will return an error not matching', function () {
+        return this.sequelize.sync({
+          force: true,
+          match: /alibabaizshaek/
+        }).then(function () {
+          throw new Error('I should not have succeeded!');
+        }, function (err) {
+          assert(true);
+        });
+      });
+    });
   })
 
   describe('drop should work', function() {