def test_raises_when_too_many_reviews(self, num_students, num_reviews):
teams = list(constants.STUDENTS[:num_students])
with pytest.raises(ValueError) as exc_info:
genreviews.generate_review_allocations(teams, num_reviews)
assert "num_reviews must be less than len(teams)" in str(
exc_info.value)
def test_all_students_get_reviewed(self, num_students, num_reviews):
"""All students should get a review team."""
teams = list(constants.STUDENTS[:num_students])
expected_reviewed_teams = list(teams)
allocations = genreviews.generate_review_allocations(
teams, num_reviews)
assert sorted(expected_reviewed_teams) == sorted(
[alloc.reviewed_team for alloc in allocations])
def test_all_students_allocated_same_amount_of_times(
self, num_students, num_reviews):
"""All students should have to review precisely num_reviews repos."""
students = list(constants.STUDENTS[:num_students])
assert len(students) == num_students, "pre-test assert"
allocations = genreviews.generate_review_allocations(
students, num_reviews)
# flatten the peer review lists
peer_reviewers = list(
itertools.chain.from_iterable(alloc.review_team.members
for alloc in allocations))
counts = collections.Counter(peer_reviewers)
assert len(peer_reviewers) == num_reviews * num_students
assert all(map(lambda freq: freq == num_reviews, counts.values()))
def test_raises_when_too_few_reviews(self):
with pytest.raises(ValueError) as exc_info:
genreviews.generate_review_allocations(list(constants.STUDENTS), 0)
assert "num_reviews must be greater than 0" in str(exc_info.value)