def test_2d_matrix_minors(self):
self.mock_width.return_value = 2
matrix = Matrix([1, 2], [3, 4])
self.assertEqual(matrix.minor(0, 0), 4)
self.assertEqual(matrix.minor(0, 1), 3)
self.assertEqual(matrix.minor(1, 0), 2)
self.assertEqual(matrix.minor(1, 1), 1)
def test_3d_matrix_minors(self):
self.mock_width.return_value = 3
matrix = Matrix([1, 2, 3], [4, 5, 6], [7, 8, 9])
matrix_patch = patch("points.matrices.Matrix")
mock_matrix = matrix_patch.start()
try:
matrices2 = [Mock(), Mock(), Mock(), Mock(), Mock(), Mock()]
mock_matrix.side_effect = matrices2
for index, mat in enumerate(matrices2, start=1):
mat.determinant.return_value = index * 100
self.assertEqual(matrix.minor(0, 0), 100)
self.assertEqual(matrix.minor(0, 1), 200)
self.assertEqual(matrix.minor(1, 1), 300)
self.assertEqual(matrix.minor(1, 2), 400)
self.assertEqual(matrix.minor(2, 0), 500)
self.assertEqual(matrix.minor(2, 2), 600)
mock_matrix.assert_any_call([5, 6], [8, 9])
mock_matrix.assert_any_call([4, 6], [7, 9])
mock_matrix.assert_any_call([1, 3], [7, 9])
mock_matrix.assert_any_call([1, 2], [7, 8])
mock_matrix.assert_any_call([2, 3], [5, 6])
mock_matrix.assert_any_call([1, 2], [4, 5])
for mat in matrices2:
mat.determinant.assert_called_with()
finally:
matrix_patch.stop()
def test_matrix_must_be_square(self):
matrix = Matrix([1, 2], [3, 4])
self.mock_square.return_value = False
with self.assertRaises(ValueError):
matrix.minor(0, 0)
