def test_mul(self):
    ' Tests the multiplication operator.\n        '
    result1 = (self.v1 * 5)
    expected_result1 = Vector2D(0.0, 0.0)
    self.assertEqual(result1, expected_result1)
    result2 = (self.v1 * self.v2)
    expected_result2 = 0.0
    self.assertEqual(result2, expected_result2)
Tests the multiplication operator.
def test_mul(self):
    ' \n        '
    result1 = (self.v1 * 5)
    expected_result1 = Vector2D(0.0, 0.0)
    self.assertEqual(result1, expected_result1)
    result2 = (self.v1 * self.v2)
    expected_result2 = 0.0
    self.assertEqual(result2, expected_result2)