def test_no_work_cover(self):
ed_w_cover = {'covers': [123]}
ed_wo_cover = {}
ed_w_neg_cover = {'covers': [-1]}
ed_w_posneg_cover = {'covers': [-1, 123]}
assert pick_cover_edition([ed_w_cover], None) == ed_w_cover
assert pick_cover_edition([ed_wo_cover], None) is None
assert pick_cover_edition([ed_w_neg_cover], None) is None
assert pick_cover_edition([ed_w_posneg_cover], None) == ed_w_posneg_cover
assert pick_cover_edition([ed_wo_cover, ed_w_cover], None) == ed_w_cover
assert pick_cover_edition([ed_w_neg_cover, ed_w_cover], None) == ed_w_cover
def test_prefers_anything(self):
ed = {'covers': [123]}
assert pick_cover_edition([ed], 456) == ed
def test_prefers_eng_covers(self):
ed_no_lang = {'covers': [123]}
ed_eng = {'covers': [456], 'languages': [{'key': '/languages/eng'}]}
ed_fra = {'covers': [789], 'languages': [{'key': '/languages/fra'}]}
assert pick_cover_edition([ed_no_lang, ed_fra, ed_eng], 456) == ed_eng
def test_prefers_work_cover(self):
ed_w_cover = {'covers': [123]}
ed_w_work_cover = {'covers': [456]}
assert pick_cover_edition([ed_w_cover, ed_w_work_cover],
456) == ed_w_work_cover
def test_no_editions(self):
assert pick_cover_edition([], 123) is None
assert pick_cover_edition([], None) is None
