public void Legacy_Rolling_a_negative_number_is_invalid()
{
// Demonstrates a one way to avoid re-writing legacy assertions. Better to re-write.
var bg = new BowlingGame();
bg.LegacyBowl(-1);
Assert.AreEqual(-1, bg.Score);
}
public static void Main(string[] args)
{
try
{
var bg = new BowlingGame();
bg.SetScore(-1); // Should fail at runtime due to invariant protection
}
catch (Exception ex)
{
// Unfortunately the exception thrown is a RunTime type derived from system.Exception
Console.WriteLine(ex.Message);
}
try
{
var bg = new BowlingGame();
bg.Bowl(-1); // Static checker catches this and you should see a warning in build output.
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
try
{
var frame = new Frame();
frame.Roll(2);
frame.Roll(3);
frame.Roll(1); // Postcondition from contract class should fail
}
catch (ArgumentException ex)
{
Console.WriteLine(ex.Message);
}
Console.ReadLine();
}
public void Rolling_a_negative_number_is_invalid()
{
var bg = new BowlingGame();
bg.Bowl(-1);
Assert.AreEqual(-1, bg.Score);
}