public void RetrieveCell_NonExisting_NullIsReturned()
{
var universe = new Universe();
var position = Point.Empty;
Assert.AreEqual(null, universe.GetCellAtPosition(position));
}
public void RetrieveCell_Existing_CorrectCellIsReturned()
{
var universe = new Universe();
var position = Point.Empty;
var cell = new Cell(position, true);
universe.AddCell(cell);
Assert.AreEqual(cell, universe.GetCellAtPosition(position));
}
public void AddCell_Existing_AddsNewCell()
{
var universe = new Universe();
var position = Point.Empty;
var firstCell = new Cell(position, true);
var secondCell = new Cell(position, true);
universe.AddCell(firstCell);
universe.AddCell(secondCell);
Assert.AreEqual(secondCell, universe.GetCellAtPosition(position));
}