tear down active transactions in functinal test cases

tests/Doctrine/Tests/DBAL/Functional/PortabilityTest.php

@@ -19,6 +19,8 @@ class PortabilityTest extends \Doctrine\Tests\DbalFunctionalTestCase
         if ($this->portableConnection) {
             $this->portableConnection->close();
         }
+
+        parent::tearDown();
     }
 
     /**

tests/Doctrine/Tests/DBAL/Functional/TemporaryTableTest.php

@@ -25,6 +25,8 @@ class TemporaryTableTest extends \Doctrine\Tests\DbalFunctionalTestCase
                 $this->_conn->exec($this->_conn->getDatabasePlatform()->getDropTemporaryTableSQL($tempTable));
             } catch(\Exception $e) { }
         }
+
+        parent::tearDown();
     }
 
     /**
@@ -108,4 +110,4 @@ class TemporaryTableTest extends \Doctrine\Tests\DbalFunctionalTestCase
         $rows = $this->_conn->fetchAll('SELECT * FROM nontemporary');
         $this->assertEquals(array(), $rows, "In an event of an error this result has one row, because of an implicit commit.");
     }
-}
\ No newline at end of file
+}

tests/Doctrine/Tests/DBAL/Functional/Ticket/DBAL630Test.php

@@ -41,6 +41,8 @@ class DBAL630Test extends \Doctrine\Tests\DbalFunctionalTestCase
                 $this->_conn->getWrappedConnection()->setAttribute(PDO::PGSQL_ATTR_DISABLE_NATIVE_PREPARED_STATEMENT, false);
             }
         }
+
+        parent::tearDown();
     }
 
     public function testBooleanConversionSqlLiteral()

tests/Doctrine/Tests/DbalFunctionalTestCase.php

@@ -40,6 +40,13 @@ class DbalFunctionalTestCase extends DbalTestCase
         $this->_conn->getConfiguration()->setSQLLogger($this->_sqlLoggerStack);
     }
 
+    protected function tearDown()
+    {
+        while ($this->_conn->isTransactionActive()) {
+            $this->_conn->rollBack();
+        }
+    }
+
     protected function onNotSuccessfulTest($e)
     {
         if ($e instanceof \PHPUnit_Framework_AssertionFailedError) {