public async Task ShouldProcessCommandsAndTransmitCurrentPosition()
{
var manouvreCommandParameter = RoverCommandParametersBuilder.WithOneSafeMoveCommand();
var commandRetrieverStub = new Mock <IRetrieveRoverCommands>();
commandRetrieverStub
.Setup(x => x.GetAll())
.ReturnsAsync(new[]
{
manouvreCommandParameter
})
.Verifiable();
var transmitterStub = new Mock <ITransmitRoverPosition>();
transmitterStub
.Setup(x => x.Transmit(It.IsAny <CurrentRoverPosition>()))
.Returns(Task.CompletedTask)
.Verifiable();
var useCase = new RoverOperationUsecase(
commandRetrieverStub.Object,
transmitterStub.Object);
await useCase.StartRoverOperation();
commandRetrieverStub.Verify(x => x.GetAll(), Times.Once);
transmitterStub.Verify(x =>
x.Transmit(It.IsAny <CurrentRoverPosition>()),
Times.Once);
}
public async Task ShouldNotTransmitPositionIfThereAreNoManouvreCommandsToProcess()
{
var commandRetrieverStub = new Mock <IRetrieveRoverCommands>();
commandRetrieverStub
.Setup(x => x.GetAll())
.ReturnsAsync(new[]
{
RoverCommandParametersBuilder.WithNoManouvreCommands()
});
var transmitterStub = new Mock <ITransmitRoverPosition>();
transmitterStub
.Setup(x => x.Transmit(It.IsAny <CurrentRoverPosition>()))
.Returns(Task.CompletedTask)
.Verifiable();
var useCase = new RoverOperationUsecase(
commandRetrieverStub.Object,
transmitterStub.Object);
await useCase.StartRoverOperation();
transmitterStub.Verify(x => x.Transmit(It.IsAny <CurrentRoverPosition>()), Times.Never);
}
public async Task ShouldThrowIfThereAreNoCommandsToProcess()
{
var commandRetrieverStub = new Mock <IRetrieveRoverCommands>();
commandRetrieverStub
.Setup(x => x.GetAll())
.ReturnsAsync(Array.Empty <RoverCommandParameters>());
var useCase = new RoverOperationUsecase(
commandRetrieverStub.Object,
new Mock <ITransmitRoverPosition>().Object);
await Assert.ThrowsAsync <ArgumentOutOfRangeException>(() => useCase.StartRoverOperation());
}
public async Task ShouldThrowIfCommandForcesRoverToMoveOffTerrain()
{
var commandRetrieverStub = new Mock <IRetrieveRoverCommands>();
commandRetrieverStub
.Setup(x => x.GetAll())
.ReturnsAsync(new[]
{
RoverCommandParametersBuilder.WithUnsafeManouvreCommand()
});
var useCase = new RoverOperationUsecase(
commandRetrieverStub.Object,
new Mock <ITransmitRoverPosition>().Object);
await Assert.ThrowsAsync <InvalidOperationException>(() => useCase.StartRoverOperation());
}
public static void Main(string[] args)
{
try
{
var roverOpertionUsecase = new RoverOperationUsecase(
new CommandLineInputParser(args),
TransmitterToUse);
roverOpertionUsecase.StartRoverOperation().Wait();
}
catch (AggregateException aggex)
{
Console.WriteLine(aggex.Flatten().InnerException.Message);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
public async Task ShouldProcessCommandsAndMoveRover()
{
var testTransmitter = new TestTransmitter();
var useCase = new RoverOperationUsecase(
new CommandLineInputParser(new[] { "5 5", "1 2 N", "LML" }),
testTransmitter);
// even though the rover will have undergone intermediate positions,
// I only need to assert on the final position. If that's correct,
// then the rover obviously made the right movements to end up at the final position
var expectedFinalPositionOfRover =
new CurrentRoverPosition(Guid.NewGuid(), 0, 2, Direction.South);
await useCase.StartRoverOperation();
testTransmitter.FinalRoverPosition
.CurrentX.Should().Be(expectedFinalPositionOfRover.CurrentX);
testTransmitter.FinalRoverPosition
.CurrentY.Should().Be(expectedFinalPositionOfRover.CurrentY);
testTransmitter.FinalRoverPosition
.CurrentHeading.Should().Be(expectedFinalPositionOfRover.CurrentHeading);
}
public async Task ShouldMoveRoverAndTransmitPosition()
{
var startingX = 1;
var startingY = 1;
var startingHeading = Direction.North;
Mock <IRetrieveRoverCommands> commandRetrieverStub = CreateCommandRetrieverStubWith(
startingX, startingY, startingHeading);
var positionProvidedToTransmitter = default(CurrentRoverPosition);
var transmitterStub = CreateRoverPositionTransmitterStubToInvoke(
currentPosition => positionProvidedToTransmitter = currentPosition);
var useCase = new RoverOperationUsecase(
commandRetrieverStub.Object,
transmitterStub.Object);
await useCase.StartRoverOperation();
positionProvidedToTransmitter.Should().NotBeNull();
positionProvidedToTransmitter.CurrentY.Should().Be(startingY + 1);
positionProvidedToTransmitter.CurrentX.Should().Be(startingX);
positionProvidedToTransmitter.CurrentHeading.Should().Be(startingHeading);
}