def test_change_priority_for_non_existing_item_in_filled_q():
q = [[2, 'item']]
algorithm._change_priority(q, 2, 'item2')
eq_(q, [[2, 'item'], [2, 'item2']])
def test_change_priority_for_existing_item():
q = [[1, 'item']]
algorithm._change_priority(q, 2, 'item')
eq_(q, [[2, 'item']])
def test_change_priority_for_non_existing_item_in_empty_q():
q = []
algorithm._change_priority(q, 2, 'item')
eq_(q, [[2, 'item']])