public void GetTotalVolume_SingleHose_ReturnsHoseTotalVolume() { _mockIO.Setup(c => c.SendAndReceive(CompanyCommands.GetTotalVolume, "04")).Returns("(000024075388)"); var forecourt = new Company(_mockIO.Object); var volume = forecourt.GetTotalVolume(new Hose(1)); forecourt.Dispose(); volume.Should().Be(240753.88d); }