def test_distance(self):
self.assertEqual(TwoDPoint.distance(self.point1, self.point3), 5)
self.assertEqual(TwoDPoint.distance(self.point1, self.point4), 0)
def side_lengths(self):
"""Returns a tuple of four floats, each denoting the length of a side of this quadrilateral. The value must be
ordered clockwise, starting from the top left corner."""
v = self.vertices
return TwoDPoint.distance(v[1], v[0]), TwoDPoint.distance(v[0], v[3]),\
TwoDPoint.distance(v[3], v[2]), TwoDPoint.distance(v[2], v[1])