Fixed nested transaction;

Author: edgardmessias

src/Transaction.php

@@ -188,4 +188,14 @@ public function setIsolationLevel($level)
         Yii::trace('Setting transaction isolation level to ' . $level, __METHOD__);
         $this->db->getSchema()->setTransactionIsolationLevel($level);
     }
+
+    /**
+     * @return integer The current nesting level of the transaction.
+     * @since 2.0.8
+     */
+    public function getLevel()
+    {
+        return $this->_level;
+    }
+
 }

tests/CommandTest.php

@@ -120,6 +120,10 @@ public function testBindParamValue()
         $this->assertEquals('[email protected]', $command->queryScalar());
     }
 
+    /**
+     * Test whether param binding works in other places than WHERE
+     * @dataProvider paramsNonWhereProvider
+     */
     public function testBindParamsNonWhere($sql)
     {
         $this->markTestSkipped('firebird does not support parameter in function');