def test_can_calculate_determinant_of_matrix6x6(self):
test_matrix = Matrix.make_from_list([[-1, 2, 3, 4, 5, 6],
[7, 0, 4, -1, 0, -3],
[0, 5, -6, 0, 0, 3],
[1, 0, 3, 4, 5, 6],
[0, 8, 0, 1, 2, 0],
[-4, 0, 6, 0, 0, -5]])
det = test_matrix.calculate_det()
self.assertEqual(det, -96)
def __init__(self):
self.matrix = Matrix.make_from_list([[0]*3]*3)
self.rows = 3
self.answer = ''
def update_matrix_content(self, content):
self.matrix = Matrix.make_from_list(content)
def test_get_data_line(self):
test_matrix = Matrix.make_from_list([[7, 0], [5, 8]])
self.assertEqual(test_matrix.get_data_lines(), [[7, 0], [5, 8]])
def test_check_constructor(self):
test_matrix = Matrix.make_from_list([[1, 1]])
self.assertTrue(test_matrix.cols == 2 and test_matrix.rows == 1 and test_matrix.data_lines[0][0] ==
test_matrix.data_lines[0][1] == 1)
def test_can_calculate_minor_0_1(self):
test_matrix = Matrix.delete_col_and_row(
Matrix.make_from_list([[1, 0, -3], [0, 0, 2], [-1, -2, 0]]), 0, 1)
det = test_matrix.calculate_det()
self.assertEqual(det, 2)
def test_delete_zero_row_and_zero_col_in_matrix(self):
test_matrix = Matrix.delete_col_and_row(
Matrix.make_from_list([[1, 3], [5, 7]]), 0, 0)
det = test_matrix.calculate_det()
self.assertEqual(det, 7)
def test_can_calculate_determinant_of_matrix3x3(self):
test_matrix = Matrix.make_from_list([[7, 2, 0], [5, 8, 7], [1, 2, 3]])
det = test_matrix.calculate_det()
self.assertEqual(det, 54)
def test_can_calculate_determinant_of_matrix2x2(self):
test_matrix = Matrix.make_from_list([[1, 3], [5, 7]])
det = test_matrix.calculate_det()
self.assertEqual(det, -8)
def test_can_not_delete_incorrect_col_or_row(self):
test_matrix = Matrix.make_from_list([[1, 3], [5, 7], [5, 7]])
with self.assertRaises(MatrixError):
Matrix.delete_col_and_row(test_matrix, -100, -500)
def test_check_exception(self):
with self.assertRaises(MatrixError):
test_matrix = Matrix.make_from_list([[1, 3]])
test_matrix.calculate_det()
def test_can_write_matrix_as_string(self):
test_matrix = Matrix.make_from_list([[1, 3], [5, 7]])
self.assertEqual(str(test_matrix), '1 3\n5 7\n')
def test_create_matrix_with_not_full_first_string(self):
with self.assertRaises(MatrixError):
Matrix.make_from_list([[1, 1], [1, 1, 1], [1, 2, 1]])
