def encode(string):
if string == "":
return ""
clean_string = strip_string(string)
width = square_width(clean_string)
# working up to here
character_matrix = make_chunks(clean_string, width)
character_matrix = transpose_matrix(character_matrix)
encoded_message = join_character_matrix(character_matrix)
return encoded_message
def test_truncated_matrix_transposition(self):
matrix = [[1, 2, 3], [4, 5, 6], [7]]
transposed = [[1, 4, 7], [2, 5], [3, 6]]
self.assertEqual(transposed, transpose_matrix(matrix))
def test_matrix_transposition(self):
matrix = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
transposed = [[1, 4, 7], [2, 5, 8], [3, 6, 9]]
self.assertEqual(transposed, transpose_matrix(matrix))
def test_character_matrix(self):
char_matrix = ["abc", "def", "ghi"]
transpose = [list("adg"), list("beh"), list("cfi")]
self.assertEqual(transpose, transpose_matrix(char_matrix))
def test_skinny_matrix_transposition(self):
transposed = [[1, 2, 3], [4, 5, 6]]
matrix = [[1, 4], [2, 5], [3, 6]]
self.assertEqual(transposed, transpose_matrix(matrix))
def test_non_square_matrix_transposition(self):
matrix = [[1, 2, 3], [4, 5, 6]]
transposed = [[1, 4], [2, 5], [3, 6]]
self.assertEqual(transposed, transpose_matrix(matrix))