public void Execute_ReadsInstructions_PassesToRobotOperator_WhenValid(params string[] inputs)
{
//Arrange
IEnumerable <string> inputSequence = inputs.AsEnumerable();
Mock <IRobotOperator> robotOperator = new Mock <IRobotOperator>();
var reader = new Mock <IReader>();
//Setup the mock response of "ReadInstruction": each time it's called, iterate through the inputs to mimic a set of user instructions.
var succession = reader.SetupSequence(r => r.ReadInstruction());
foreach (var instruction in inputs)
{
succession = succession.Returns(instruction);
}
var app = new ToyRobotConsole.ToyRobotConsoleApp(robotOperator.Object, reader.Object);
//Because Execute runs an infine loop, I'm testing on the logic inside each loop.
var method = app.GetType().GetMethod("ObeyNextInstruction", BindingFlags.NonPublic | BindingFlags.Instance);
//Act
for (var i = 0; i < inputs.Length; i++)
{
method.Invoke(app, null);
}
//Assert
robotOperator.Verify(ro => ro.InterpretInstruction(It.IsAny <Instruction>(), It.IsAny <string[]>()), Times.Exactly(inputs.Length));
}
public void Constructor_ShouldThrowException_WhenPassedNoReader()
{
//Arrange
Mock <IRobotOperator> robotOperator = new Mock <IRobotOperator>();
Mock <IReporter> reporter = new Mock <IReporter>();
IToyRobotApp app;
//Act
Exception ex = Record.Exception(() => app = new ToyRobotConsole.ToyRobotConsoleApp(robotOperator.Object, reader: null));
//Assert
Assert.IsType <ArgumentNullException>(ex);
}
public void Constructor_ShouldSucceed_WhenPassedValidArguments()
{
//Arrange
Mock <IRobotOperator> robotOperator = new Mock <IRobotOperator>();
Mock <IReader> reader = new Mock <IReader>();
Mock <IReporter> reporter = new Mock <IReporter>();
//Act
var app = new ToyRobotConsole.ToyRobotConsoleApp(robotOperator.Object, reader.Object);
//Assert
Assert.NotNull(app);
Assert.IsAssignableFrom <IToyRobotApp>(app);
Assert.IsType <ToyRobotConsole.ToyRobotConsoleApp>(app);
}
