public void ParseAllSteps_Success() { IStandardIOReaderWriter consoleMock = Substitute.For <IStandardIOReaderWriter>(); consoleMock .ReadLine().Returns( "4", // the number of directional commands to process "10 20", // the starting point coordinate "E 2", // from there and below follow navigation commands "E 5", "W 3", "S 7", "S 7", "whatever invalid argument won't be processed as we retrieve only the first four directional parameters"); var sut = new ConsoleParser(consoleMock); var inputCommand = sut.ParseAllSteps(); Assert.IsTrue(inputCommand.StartingCoordinate.X == 10); Assert.IsTrue(inputCommand.StartingCoordinate.Y == 20); Assert.IsTrue(inputCommand.AtomicNavigationSteps.Count == 17); consoleMock.Received(6).ReadLine(); // we invoked the ReadLine only 6 = 2 + 4 times regardless of how many additional navigation parameters we supplied }
public ConsoleParser(IStandardIOReaderWriter standardIoReaderWriter) { _standardIoReaderWriter = standardIoReaderWriter; }