+ ->willReturnCallback( $this->getMockDBConnRefCallback( $mockLoadBalancer, $db ) );
+ // Title calls wfGetDB() which uses getMaintenanceConnectionRef
+ // RevisionStore getTitle uses getMaintenanceConnectionRef
+ $mockLoadBalancer->expects( $this->atLeastOnce() )
+ ->method( 'getMaintenanceConnectionRef' )
+ ->willReturnCallback( $this->getMockDBConnRefCallback( $mockLoadBalancer, $db ) );