Method test_vector_negative

Lib/test/test_turtle.py:265–268

(self)

        self.assertEqual(M * vec, f'M*{vec}')

    def test_vector_negative(self):
        vec = Vec2D(10, -10)
        expected = (-10, 10)
        self.assertVectorsAlmostEqual(-vec, expected)

    def test_distance(self):
        self.assertAlmostEqual(abs(Vec2D(6, 8)), 10)