def test_when_get_topics_form_contexts_that_not_have_topic():
r = VowsRunner(None, None)
assert_it([5, 3, 2], r.pop_topics([1, 2, 3, None, 5, None], num=3))
def test_when_should_get_a_specifc_num_of_topics():
r = VowsRunner(None, None)
assert_it([5, 4, 3], r.pop_topics([1, 2, 3, 4, 5], num=3))
def test_when_the_last_topic_is_none_return_the_parent_value():
r = VowsRunner(None, None)
assert_it([1], r.pop_topics([1, None, None, None]))
def test_when_have_2_old_topics():
r = VowsRunner(None, None)
assert_it([2], r.pop_topics([1, 2]))
def test_when_have_a_old_topic():
r = VowsRunner(None, None)
assert_it([1], r.pop_topics([1]))
def test_when_not_have_olders_topics():
r = VowsRunner(None, None)
assert_it([], r.pop_topics([]))
