public void Should_reborn_with_three_neighbours_on_GenerateNextState()
{
var cellFieldInitial = new CellField(3, 3);
cellFieldInitial.SeedLife(0, 0);
cellFieldInitial.SeedLife(1, 0);
cellFieldInitial.SeedLife(0, 1);
_sut.GenerateNextState(cellFieldInitial);
Assert.That(cellFieldInitial[1, 1].IsAlive);
}
public void Should_kill_two_neighbour_cells_on_GenerateNextState()
{
var cellFieldInitial = new CellField(3, 3);
cellFieldInitial.SeedLife(0, 0);
cellFieldInitial.SeedLife(0, 1);
_sut.GenerateNextState(cellFieldInitial);
Assert.That(!cellFieldInitial[0, 0].IsAlive);
Assert.That(!cellFieldInitial[0, 1].IsAlive);
}
public void Should_kill_lone_cell_on_GenerateNextState()
{
var cellFieldInitial = new CellField(3, 3);
cellFieldInitial.SeedLife(1, 1);
_sut.GenerateNextState(cellFieldInitial);
Assert.That(!cellFieldInitial[1, 1].IsAlive);
}
public void Should_CellField_Equals()
{
var cellField1 = new CellField(2, 2);
cellField1.SeedLife(0, 0);
var cellField2 = new CellField(2, 2);
cellField2.SeedLife(0, 0);
Assert.IsTrue(cellField1.Equals(cellField2));
Assert.IsFalse(cellField1 == cellField2);
}
public void Should_state_not_changed_on_GenerateNextState()
{
var cellFieldInitial = new CellField(3, 3);
var cellFieldWithNextState = new CellField(3, 3);
for (int j = 0; j < 2; j++)
{
for (int i = 0; i < 2; i++)
{
cellFieldInitial.SeedLife(i, j);
cellFieldWithNextState.SeedLife(i, j);
}
}
_sut.GenerateNextState(cellFieldWithNextState);
Assert.That(cellFieldInitial.Equals(cellFieldWithNextState));
}
/// <summary>
/// Seeds instance of CeedField with alive cells randomly
/// </summary>
/// <param name="field"></param>
/// <param name="density">Value from 0 to 1. Defines the chance of seeding alive cell.</param>
public static void SeedFieldRandomly(this CellField field, double density)
{
if (density < 0 || 1 < density)
{
throw new ArgumentOutOfRangeException(nameof(density), density, "Value of the \"{0}\" should be in range of 0 and 1.");
}
var random = new Random();
for (int j = 0; j < field.Height; j++)
{
for (int i = 0; i < field.Width; i++)
{
if (random.NextDouble() < density)
{
field.SeedLife(i, j);
}
}
}
}