Introduce StatementMock to make testsuite ready for upcoming DBAL change

tests/Doctrine/Tests/Mocks/DriverConnectionMock.php

@@ -5,7 +5,7 @@ namespace Doctrine\Tests\Mocks;
 class DriverConnectionMock implements \Doctrine\DBAL\Driver\Connection
 {
     public function prepare($prepareString) {}
-    public function query() {}
+    public function query() { return new StatementMock; }
     public function quote($input, $type=\PDO::PARAM_STR) {}
     public function exec($statement) {}
     public function lastInsertId($name = null) {}

tests/Doctrine/Tests/Mocks/StatementMock.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Doctrine\Tests\Mocks;
+
+/**
+ * This class is a mock of the Statement interface.
+ *
+ * @author Alexander <iam.asm89@gmail.com>
+ */
+class StatementMock implements \IteratorAggregate, \Doctrine\DBAL\Driver\Statement
+{
+    public function bindValue($param, $value, $type = null){}
+    public function bindParam($column, &$variable, $type = null){}
+    public function errorCode(){}
+    public function errorInfo(){}
+    public function execute($params = null){}
+    public function rowCount(){}
+    public function closeCursor(){}
+    public function columnCount(){}
+    public function setFetchMode($fetchStyle, $arg2 = null, $arg3 = null){}
+    public function fetch($fetchStyle = null){}
+    public function fetchAll($fetchStyle = null){}
+    public function fetchColumn($columnIndex = 0){}
+    public function getIterator(){}
+}