public void PrintsCommandsToConsole()
{
// arrange
var console = new Mock<IConsole>();
var repl = new Mock<IRepl>();
var clearCommand = new ClearCommand(console.Object);
var exitCommand = new ExitCommand(console.Object);
var commands = new Dictionary<string, IReplCommand>
{
{clearCommand.CommandName, clearCommand},
{exitCommand.CommandName, exitCommand},
};
repl.Setup(x => x.Commands).Returns(commands);
var cmd = new HelpCommand(console.Object);
// act
cmd.Execute(repl.Object, null);
// assert
console.Verify(x => x.WriteLine(It.IsAny<string>()), Times.Exactly(3));
console.Verify(x => x.WriteLine(It.Is<string>(f => f.StartsWith(":" + clearCommand.CommandName) && f.Contains(clearCommand.Description))), Times.Once);
console.Verify(x => x.WriteLine(It.Is<string>(f => f.StartsWith(":" + exitCommand.CommandName) && f.Contains(exitCommand.Description))), Times.Once);
}
public void ReturnsExit()
{
// act
var cmd = new ExitCommand(new Mock<IConsole>().Object);
// assert
Assert.Equal("exit", cmd.CommandName);
}
public void PromptsUserBeforeExiting()
{
// arrange
var console = new Mock<IConsole>();
console.Setup(x => x.ReadLine(message)).Returns("n");
var executor = new Mock<IRepl>();
var cmd = new ExitCommand(console.Object);
// act
cmd.Execute(executor.Object, null);
// assert
console.Verify(x => x.ReadLine(message));
}
public void ExitsWhenUserAnswersYes()
{
// arrange
var console = new Mock<IConsole>();
console.Setup(x => x.ReadLine(message)).Returns("y");
var executor = new Mock<IRepl>();
var cmd = new ExitCommand(console.Object);
// act
cmd.Execute(executor.Object, null);
// assert
executor.Verify(x => x.Terminate());
}
public void DoesNotExitWhenUserAnswersNo()
{
// arrange
var console = new Mock<IConsole>();
console.Setup(x => x.ReadLine()).Returns("n");
var executor = new Mock<IRepl>();
var cmd = new ExitCommand(console.Object);
// act
cmd.Execute(executor.Object, null);
// assert
executor.Verify(x => x.Terminate(), Times.Never);
}
public void PromptsUserBeforeExiting()
{
// arrange
const string message = "Are you sure you wish to exit? (y/n): ";
var console = new Mock<IConsole>();
console.Setup(x => x.ReadLine()).Returns("n");
var executor = new Mock<IRepl>();
var cmd = new ExitCommand(console.Object);
// act
cmd.Execute(executor.Object, null);
// assert
console.Verify(x => x.Write(message));
}