public void asteroid_with_3_breakdownsRemaining_breaks_into_2_smaller_asteroids()
{
var breakdownsRemaining = 3;
var breakdownPieces = 2;
_asteroidManager.Reset();
Asteroid asteroid = An.Asteroid.
WithBreakdownsRemaining(breakdownsRemaining).
WithBreakdownPieces(breakdownPieces);
_asteroidManager.Add(asteroid);
var initialAsteroidCount = _asteroidManager.AsteroidCount;
asteroid.Breakdown();
Assert.AreEqual(breakdownsRemaining - 1, asteroid.BreakdownsRemaining);
Assert.AreEqual(initialAsteroidCount + breakdownPieces - 1, _asteroidManager.AsteroidCount);
}