public void ValidateShuffle()
{
List <Tile> original = Enumerable.Range(0, 24).Select(value => new Tile(value)).ToList();
List <Tile> shuffled = new List <Tile>(original);
TilesShuffler shuffler = new TilesShuffler();
shuffler.Shuffle(shuffled);
Assert.NotEqual(original, shuffled);
}
private List <Tile> GetLegalBoardTiles(int size)
{
int numberOfTiles = size * size - 1;
List <Tile> tiles = Enumerable.Range(0, numberOfTiles).Select(i => new Tile(i)).ToList();;
tiles.Add(new Tile(null));
do
{
tilesShuffler.Shuffle(tiles);
} while (!legalBoardValidator.Validate(tiles, size));
return(tiles);
}