Named annotation message filtering does not work correctly when no failure message is supplied

[chrispyles]

If no failure message is supplied but a success message is in a group of named annotations and one of the annotations is not satisfied, the success message is shown even though the reference registers as not being satisfied. In this case, no message should be shown.

Example:

max_ref = []
def maximum(l, track=False):
    m = max(l)
    if track:
        max_ref.append(pybryt.Value(m, name="list-maximum", success_message="Found the max!")
    return m

test_lists = [[1, 2, 3], [-1, 0, 1], [10, -4, 2, 0], [1]]
for test_list in test_lists:
    maximum(test_list, track=True)

max_ref = pybryt.ReferenceImplementation("maximum", max_ref)

def maximum(l):
    if len(l) % 2 == 0:
        m = min(l)
    else:
        m = max(l)
    return m

with pybryt.check(max_ref):
    for test_list in test_lists:
        maximum(test_list)