def test_find_package_not_found():
    result = search_packages_info(['abcd3'])
    assert len(list(result)) == 0
`cond` takes as arguments a list of tuples (two-element lists, or "conses").
dataset/ETHPy150Open pypa/pip/tests/functional/test_show.py/test_find_package_not_found--crossover with--dataset/ETHPy150Open kvalle/diy-lisp/tests/test_8_final_touches.py/test_cond_returns_right_branch