def test_4_two_folds_interleaved(self):
g = Grid(4)
array = g.fold("BLBL")
expected = [3, 15, 14, 2, 6, 10, 11, 7, 8, 12, 9, 5, 1, 13, 16, 4]
self.assertEqual(array, expected)
def test_4_all_folds_horizontal_then_vertical(self):
g = Grid(4)
array = g.fold("RLBT")
expected = [2, 3, 4, 1, 13, 16, 15, 14, 10, 11, 12, 9, 5, 8, 7, 6]
self.assertEqual(array, expected)
def test_4_two_folds_grouped(self):
g = Grid(4)
array = g.fold("RRTT")
expected = [9, 12, 11, 10, 6, 7, 8, 5, 1, 4, 3, 2, 14, 15, 16, 13]
self.assertEqual(array, expected)
def test_4_all_folds_vertical_then_horizontal(self):
g = Grid(4)
array = g.fold("TBLR")
expected = [12, 8, 4, 16, 13, 1, 5, 9, 10, 6, 2, 14, 15, 3, 7, 11]
self.assertEqual(array, expected)
def test_4_all_folds_clockwise(self):
g = Grid(4)
array = g.fold("TRBL")
expected = [9, 5, 8, 12, 16, 4, 1, 13, 14, 2, 3, 15, 11, 7, 6, 10]
self.assertEqual(array, expected)
def test_2_fold_horizontal_then_vertical(self):
g = Grid(2)
g.fold("RB")
self.assertEqual(g.grid, [[[3]], [[4]], [[2]], [[1]]])
def test_invalid_character(self):
g = Grid(16)
with self.assertRaisesRegex(GridError, "Invalid input character: X"):
g.fold("TBRLXBRL")
def test_long_input(self):
g = Grid(16)
with self.assertRaisesRegex(GridError,
"Invalid input: incorrect input length"):
g.fold("BTLRBLTRB")