removed id from dropTable and added dropAllTables

lib/query-interface.js

@@ -10,8 +10,31 @@ module.exports = (function() {
     return query.call(this, this.QueryGenerator.createTableQuery(tableName, attributes, options))
   }
 
-  QueryInterface.prototype.dropTable = function(tableName, id) {
-    return query.call(this, this.QueryGenerator.dropTableQuery(tableName, id))
+  QueryInterface.prototype.dropTable = function(tableName) {
+    return query.call(this, this.QueryGenerator.dropTableQuery(tableName))
+  }
+
+  QueryInterface.prototype.dropAllTables = function() {
+    var self = this
+
+    return new Utils.CustomEventEmitter(function(emitter) {
+      var chainer = new Utils.QueryChainer()
+
+      self.sequelize.query('SHOW TABLES;', null, { raw: true }).success(function(data) {
+        var tableNames = Sequelize.Utils._.map(data, function(hash) {
+          return Sequelize.Utils._.values(hash)
+        })
+        Sequelize.Utils._.flatten(tableNames).forEach(function(tableName) {
+          chainer.add(self.sequelize.getQueryInterface().dropTable(tableName))
+        })
+        chainer
+          .run()
+          .success(function() { emitter.emit('success', null) })
+          .error(function(err) { emitter.emit('failure', err) })
+      }).error(function(err) {
+        emitter.emit('failure', err)
+      })
+    }).run()
   }
 
   QueryInterface.prototype.renameTable = function() {