public void PresetByValue_SingleHoseAndSomeValue_PresetsHoseWithSpecifiedValue() { _mockIO.Setup(c => c.SendAndReceive(CompanyCommands.PresetHoseByValue, "04", "007681")).Verifiable(); var forecourt = new Company(_mockIO.Object); forecourt.PresetByValue(new Hose(1), 76.81); forecourt.Dispose(); _mockIO.Verify(c => c.SendAndReceive(CompanyCommands.PresetHoseByValue, "04", "007681")); }