public void ReleaseTetrimino_TerminoPlaced_RemoveTetriminoButKeepBlocks() { Block[] blocks = { new Block(), new Block() }; Tetrimino tetrimino = new Tetrimino(Direction.UP, blocks); _tetrisBoard.AddTetriminoAt(tetrimino, new Point(2, 2)); _tetrisBoard.ReleaseTetrimino(tetrimino); Assert.Empty(_tetrisBoard.AllTetriminos()); Assert.Null(_tetrisBoard.TetriminoPoint(tetrimino)); Assert.Equal(2, _tetrisBoard.AllBlocks().Length); Assert.Equal(blocks[1], _tetrisBoard.BlockAt(new Point(2, 2))); Assert.Equal(blocks[0], _tetrisBoard.BlockAt(new Point(2, 1))); }