def test_works_well(self):
''' Make sure that _sched_piece() works well '''
idx = (i for i in xrange(64))
sched = _sched_piece(idx, 19, 16, 8)
self.assertEquals(sched.next(), (0, 0, 8))
self.assertEquals(sched.next(), (0, 8, 8))
self.assertEquals(sched.next(), (1, 0, 3))
def test_checks_parameters(self):
''' Make sure it raises RuntimeError if passed invalid parameters '''
idx = (i for i in xrange(64))
sched = _sched_piece(idx, 19, 16, 81)
self.assertRaises(RuntimeError, sched.next)