def test_choose_zero_ideas():
assert choose_ideas(['a'], 0) == []
def test_choose_ideas_more_ideas_than_number():
result = choose_ideas(['a', 'b', 'c'], 2)
possible_results = [['a', 'b'], ['a', 'c'], ['b', 'c'],
['b', 'a'], ['c', 'a'], ['c', 'b']]
assert result in possible_results
def test_choose_ideas_same_ideas_as_number():
result = choose_ideas(['a', 'b'], 2)
assert result in [['a', 'b'], ['b', 'a']]
def test_choose_ideas_negative_number():
assert choose_ideas(['a'], -1) == ['a']
def test_choose_ideas_fewer_ideas_than_number():
assert choose_ideas(['a'], 2) == ['a']
def test_choose_ideas_no_ideas():
assert choose_ideas([], 3) == []
