public void IterateToFirstCellWhenNotFrozen()
{
var grid = Grid.OfSize(3);
grid.Cell(0, 0, 1);
grid.Cell(0, 1, 2);
var enumerator = new FrozenCellSkippingGridEnumerator(grid.GetEnumerator());
enumerator.MoveNext();
Assert.That(enumerator.Current.IsFrozen, Is.False);
Assert.That(enumerator.Current.Value, Is.EqualTo(1));
}
public void CannotIterateBackWhenFirstCellIsFrozen()
{
var grid = Grid.OfSize(3);
grid.Cell(0, 0, 1);
grid.Freeze();
grid.Cell(0, 1, 2);
var enumerator = new FrozenCellSkippingGridEnumerator(grid.GetEnumerator());
enumerator.MoveNext();
Assert.That(enumerator.MoveBack, Is.False);
}
public void CannotMoveForwardWhenLastCellIsFrozen()
{
var grid = Grid.OfSize(3);
grid.Cell(2, 2, 1);
grid.Freeze();
var enumerator = new FrozenCellSkippingGridEnumerator(grid.GetEnumerator());
int counter = 0;
while (counter < 8 && enumerator.MoveNext())
{
counter++;
}
Assert.That(counter, Is.EqualTo(8));
Assert.That(enumerator.MoveNext(), Is.False);
}
