--- a/python/tests/moving.txt	Mon Jun 04 17:46:52 2018 -0400
+++ b/python/tests/moving.txt	Mon Jun 04 23:35:50 2018 -0400
@@ -200,8 +200,31 @@
 True
 
 >>> o1 = MovingObject.generate(1, Point(1., 2.), Point(1., 1.), TimeInterval(0,10))
+>>> o1.features = [o1]
 >>> o2 = MovingObject.generate(2, Point(14., 14.), Point(1., 0.), TimeInterval(14,20))
-
+>>> o2.features = [o2]
+>>> o3 = MovingObject.generate(3, Point(2., 2.), Point(1., 1.), TimeInterval(2,12))
+>>> o3.features = [o3]
+>>> o13 = MovingObject.concatenate(o1, o3, 4)
+>>> o13.getNum()
+4
+>>> o13.getTimeInterval() == TimeInterval(0,12)
+True
+>>> t=5
+>>> o13.getPositionAtInstant(t) == (o1.getPositionAtInstant(t)+o3.getPositionAtInstant(t)).divide(2)
+True
+>>> len(o13.getFeatures())
+2
+>>> o12 = MovingObject.concatenate(o1, o2, 5)
+>>> o12.getTimeInterval() == TimeInterval(o1.getFirstInstant(), o2.getLastInstant())
+True
+>>> v = o12.getVelocityAtInstant(12)
+>>> v == Point(3./4, 2./4)
+True
+>>> o12.getPositionAtInstant(11) == o1.getPositionAtInstant(10)+v
+True
+>>> len(o12.getFeatures())
+3
 
 >>> o1 = MovingObject.generate(1, Point(0., 2.), Point(0., 1.), TimeInterval(0,2))
 >>> o1.classifyUserTypeSpeedMotorized(0.5, np.median)