public void DeadCell_ExactlyThreeLiveNeighbours_BecomesLiveByReproduction()
{
Cellstate currentState = Cellstate.Dead;
int liveNeghbours = 3;
Cellstate result = LifeRules.GetNewState(currentState, liveNeghbours);
Assert.AreEqual(Cellstate.Alive, result);
}
public void LiveCell_TwoOrThreeLiveNeighbours_LivestoNextGeneration()
{
Cellstate currentState = Cellstate.Alive;
int liveNeghbours = 3;
Cellstate result = LifeRules.GetNewState(currentState, liveNeghbours);
Assert.AreEqual(Cellstate.Alive, result);
}
public void LiveCell_MoreThanThreeLiveNeighbours_DiesByOverpopulation()
{
Cellstate currentState = Cellstate.Alive;
int liveNeghbours = 4;
Cellstate result = LifeRules.GetNewState(currentState, liveNeghbours);
Assert.AreEqual(Cellstate.Dead, result);
}
public void AnyLiveCellWithFewerthanTwoLiveNeighborsDiesAsIfByUnderPopulation()
{
Cellstate currentState = Cellstate.Alive;
int liveNeighbours = 1;
Cellstate result = LifeRules.GetNewState(currentState, liveNeighbours);
Assert.AreEqual(Cellstate.Dead, result);
}
public static Cellstate GetNewState(Cellstate currentState, int liveNeighbours)
{
if (currentState == Cellstate.Alive && liveNeighbours < 2)
{
currentState = Cellstate.Dead;
}
if (currentState == Cellstate.Alive && liveNeighbours > 3)
{
currentState = Cellstate.Dead;
}
if (currentState == Cellstate.Dead && liveNeighbours == 3)
{
currentState = Cellstate.Alive;
}
return(currentState);
}
