def test_inverse_2x2_matrix(self):
matrix = Matrix.make_from_list([[1, 2], [3, 4]])
result_matrix = MatrixOperations.inverse(matrix)
self.assertTrue(result_matrix.data_lines[0][0] == -2
and result_matrix.data_lines[0][1] == 1
and result_matrix.data_lines[1][0] == 1.5
and result_matrix.data_lines[1][1] == -0.5)
def test_inverse_matrix_with_zero_det(self):
matrix = Matrix.make_from_list([[1, 2], [2, 4]])
with self.assertRaises(MatrixError):
MatrixOperations.inverse(matrix)
def test_inverse_invalid_size_matrix(self):
matrix = Matrix.make_from_list([[1, 2, 2], [3, 4, 4]])
with self.assertRaises(MatrixError):
MatrixOperations.inverse(matrix)
def inverse2(self):
return MatrixOperations.inverse(self.matrix2).get_data_lines()
