def test_line_doesnt_self_intersect(self):
p1 = Position(0.0, 0.0)
p2 = Position(0.1, 0.1)
l1 = Line(p1, p2)
l2 = Line(p1, p2)
l3 = Line(p2, p1)
self.assertFalse(l1.intersects(l2))
self.assertFalse(l1.intersects(l3))
self.assertFalse(l3.intersects(l1))
def test_line_doesnt_intersect_at_end(self):
p1 = Position(0.0, 0.0)
p2 = Position(0.1, 0.1)
p3 = Position(0.1, 0.0)
l1 = Line(p1, p2)
l2 = Line(p1, p3)
l3 = Line(p3, p1)
l4 = Line(p3, p2)
self.assertFalse(l1.intersects(l2))
self.assertFalse(l1.intersects(l3))
self.assertFalse(l1.intersects(l4))
self.assertFalse(l2.intersects(l1))
self.assertFalse(l3.intersects(l1))
self.assertFalse(l3.intersects(l1))
self.assertFalse(l4.intersects(l1))
