describe('Any live cell with two or three live neighbours lives on to the next generation.', function () {

        it('should save cell with two live neighbours', function () {
            game.setCell(3,2);
            game.setCell(3,4);

            game.setCell(3,3);
            game.nextFrame();
            expect(game.grid()[3][3]).toBe(1);
        });

        it('should save cell with three live neighbours', function () {
            game.setCell(3,2);
            game.setCell(3,4);
            game.setCell(4,4);

            game.setCell(3,3);
            game.nextFrame();
            expect(game.grid()[3][3]).toBe(1);
        });

        it('should save cell with three live neighbours on different rows', function () {
            game.setCell(2,2);
            game.setCell(3,4);
            game.setCell(4,4);

            game.setCell(3,3);
            game.nextFrame();
            expect(game.grid()[3][3]).toBe(1);
        });
    });