def test_merge(self):
matrix_first = Matrix(WORD_LEN)
matrix_first.empty_word = True
matrix_first.subwords[0][0] = 1
matrix_second = Matrix(WORD_LEN)
matrix_second.empty_word = False
matrix_second.subwords[1][1] = 1
matrix = merge(matrix_first, matrix_second)
self.assertEqual(matrix.empty_word, True)
self.assertEqual(matrix.subwords[0][0], 1)
self.assertEqual(matrix.subwords[1][1], 1)
self.assertEqual(matrix.subwords[0][1], 0)
def test_find_max_len_subword_in_subwords_matrix(self):
matrix = Matrix(WORD_LEN)
matrix.empty_word = True
self.assertEqual(find_max_len_subword_in_subwords_matrix(matrix), 0)