Google\Cloud\Tests\Datastore\DatastoreSessionHandlerTest::testOpenNotAllowed PHP Method

    public function testOpenNotAllowed()
    {
        $this->datastore->transaction()->shouldNotBeCalled()->willReturn($this->transaction->reveal());
        $datastoreSessionHandler = new DatastoreSessionHandler($this->datastore->reveal());
        $datastoreSessionHandler->open('/tmp/sessions', self::KIND);
    }