public void Block_SingleHose_BlocksHose()
        {
            _mockIO.Setup(c => c.SendAndReceive(CompanyCommands.BlockHose, "04")).Verifiable();
            var forecourt = new Company(_mockIO.Object);

            forecourt.Block(new Hose(1));
            forecourt.Dispose();
            
            _mockIO.Verify(c => c.SendAndReceive(CompanyCommands.BlockHose, "04"));
        }