def METHOD_NAME(self):
    line_a = Line2d(1, 1, 2, 1)
    line_b = Line2d(1, 2, 2, 2)
    self.assertTrue(line_a != line_b)
    self.assertTrue(line_a == line_a)
    line_b.set(1, 1, 2, 1.1)
    self.assertFalse(line_a == line_b)
    line_b.set(1, 1, 2.1, 1)
    self.assertFalse(line_a == line_b)
    line_b.set(1, 1.1, 2, 1)
    self.assertFalse(line_a == line_b)
    line_b.set(1.1, 1, 2, 1)
    self.assertFalse(line_a == line_b)