public void PlayingGame_Always_Prints100Strings()
{
// Arrange
var printerMock = Substitute.For <IResultPrinter>();
var game = new FizzBuzzGame(printerMock);
// Act
game.PlayTheGame();
// Assert
printerMock.Received(100).Print(Arg.Any <string>());
}
public void PlayingGame_ForMultiplesOfBothThreeAndFive_ReturnsFizzBuzz(int index, string expected)
{
// Arrange
var printerMock = new ResultPrinterMock();
var game = new FizzBuzzGame(printerMock);
// Act
game.PlayTheGame();
// Assert
var actual = printerMock.GetMessageWithIndex(index);
Assert.AreEqual(expected, actual);
}
public void PlayingGame_AsTheFirstString_Returns1()
{
// Arrange
var printerMock = new ResultPrinterMock();
var game = new FizzBuzzGame(printerMock);
// Act
game.PlayTheGame();
// Assert
var firstResult = printerMock.GetMessageWithIndex(1);
Assert.AreEqual("1", firstResult);
}
public void PlayingGame_Allways_ReturnsNumberOrFizzOrBuzzOrFizzBuzz()
{
// Arrange
var printerMock = Substitute.For <IResultPrinter>();
var game = new FizzBuzzGame(printerMock);
// Act
game.PlayTheGame();
// Assert
printerMock.DidNotReceive().Print(Arg.Is <String>(arg => !(
AssertHelper.IsPositiveInteger(arg) ||
AssertHelper.IsFizz(arg) ||
AssertHelper.IsBuzz(arg) ||
AssertHelper.IsFizzBuzz(arg))));
}
public void PlayingGame_AllNumbers_AreNotMultiplesOfThreeOrFive()
{
// Arrange
var printerMock = new ResultPrinterMock();
var game = new FizzBuzzGame(printerMock);
// Act
game.PlayTheGame();
Assert.True(printerMock.AllPrintedMessages().All(s =>
{
if (!AssertHelper.IsPositiveInteger(s))
{
return(true);
}
var intVal = Int32.Parse(s);
return(intVal % 3 != 0 && intVal % 5 != 0);
}));
}
