public void SetPrice_SingleHoseAndSomeValue_SetsHosePriceWithSpecifiedValue()
        {
            _mockIO.Setup(c => c.SendAndReceive(CompanyCommands.SetPrice, "04", "3784")).Verifiable();
            var forecourt = new Company(_mockIO.Object);

            forecourt.SetPrice(new Hose(1), 3.784);
            forecourt.Dispose();

            _mockIO.Verify(c => c.SendAndReceive(CompanyCommands.SetPrice, "04", "3784"));
        }