def test_track_2 (self) :
b, c = XML.xml_track([0, 5, 7, 9, 13])
self.assertTrue(b == 4)
self.assertTrue(c == [1, 2, 3, 4])
def test_track_3 (self) :
b, c = XML.xml_track([0])
self.assertTrue(b == 0)
self.assertTrue(c == [])
def test_track_1 (self) :
b, c = XML.xml_track([0, 1, 2])
self.assertTrue(b == 2)
self.assertTrue(c == [1, 2])
