Bolt\Tests\Mocks\DoctrineMockBuilder::getConnectionMock PHP Method

    public function getConnectionMock()
    {
        $mock = $this->getMockBuilder('Doctrine\\DBAL\\Connection')->disableOriginalConstructor()->setMethods(['beginTransaction', 'commit', 'rollback', 'prepare', 'query', 'executeQuery', 'executeUpdate', 'getDatabasePlatform', 'createQueryBuilder', 'connect', 'insert'])->getMock();
        $mock->expects($this->any())->method('prepare')->will($this->returnValue($this->getStatementMock()));
        $mock->expects($this->any())->method('query')->will($this->returnValue($this->getStatementMock()));
        $mock->expects($this->any())->method('executeQuery')->will($this->returnValue($this->getStatementMock()));
        $mock->expects($this->any())->method('createQueryBuilder')->will($this->returnValue($this->getQueryBuilderMock($mock)));
        $mock->expects($this->any())->method('getDatabasePlatform')->will($this->returnValue($this->getDatabasePlatformMock()));
        return $mock;
    }

 public function testNextIncrement()
 {
     $nextIncField = array('type' => 'hidden', 'options' => array('label' => false), 'event' => array('name' => 'next_increment', 'params' => array('table' => 'koalas', 'column' => 'gum_leaves', 'min' => 42)));
     $app = $this->getApp(false);
     $this->getExtension($app)->config['csrf'] = false;
     $this->getExtension($app)->config['testing_form']['fields']['next_inc'] = $nextIncField;
     $app['request'] = Request::create('/');
     $boltforms = new BoltForms($app);
     $boltforms->makeForm('testing_form');
     $fields = $this->formValues();
     $fields['next_inc'] = $nextIncField;
     $boltforms->addFieldArray('testing_form', $fields);
     $parameters = array('testing_form' => array('name' => 'Gawain Lynch', 'email' => '*****@*****.**', 'message' => 'Hello'));
     $app['request'] = Request::create('/', 'POST', $parameters);
     $app->boot();
     // Mock the database query
     $mocker = new DoctrineMockBuilder();
     $db = $mocker->getConnectionMock();
     $queries = array();
     $db->expects($this->any())->method('executeQuery')->will($this->returnCallback(function ($query, $params) use(&$queries, $mocker) {
         $queries[] = $query;
         return $mocker->getStatementMock();
     }));
     $db->expects($this->any())->method('fetchColumn')->with($this->equalTo('koalas'))->willReturn(55);
     $app['db'] = $db;
     // Mock Bolt\Users
     $users = $this->getMock('\\Bolt\\Users', array('getUsers'), array($app));
     $users->expects($this->any())->method('getUsers')->willReturn(array('id' => 1));
     $app['users'] = $users;
     $result = $boltforms->processRequest('testing_form', array('success' => true), true);
     $this->assertEquals('SELECT MAX(gum_leaves) as max FROM koalas', $queries[0]);
     $this->assertArrayHasKey('next_inc', $result);
     $this->assertSame(42, $result['next_inc']);
 }