def test_get_average_turns_to_find_cat():
owners_and_cats = [
{
'owner': [1, 5, 7],
'cat': [5, 4, 7]
},
{
'owner': [2, 5, 7, 12],
'cat': [5, 4, 5, 3]
},
{
'owner': [1, 2, 3, 4],
'cat': [6, 7, 3, 4]
}
]
assert metrics.get_average_turns_to_find_cat(owners_and_cats) == 3.5
def test_get_average_turns_to_find_cat_raises_exception_if_none_found():
owners_and_cats = []
with pytest.raises(ValueError):
metrics.get_average_turns_to_find_cat(owners_and_cats)
