def testLength(self):
p = Path()
p.addPoint(self.p0)
p.addPoint(self.p1)
l0 = Line(self.p0, self.p1)
l1 = Line(self.p1, self.p2)
self.assertEquals(p.length(), l0.length())
p.addPoint(self.p2)
self.assertEquals(p.length(), l0.length() + l1.length())
def testEmpty(self):
emptyPath = Path()
self.assertFalse(emptyPath.isConnected())
self.assertEquals(emptyPath.length(), 0)
