def test_set_user_attendance_updates_user(roster):
steve = User('1', 'Steve', '1', 'avatar1')
roster.set_user_attendance(steve, True)
steve2 = steve._replace(avatar='avatar2')
roster.set_user_attendance(steve2, True)
assert list(roster.attending_users()) == [steve2]
def test_update_users_preserves_attendance(roster):
bob = User('1', 'Bob', '1', 'avatar1')
roster.set_user_attendance(bob, True)
bob2 = bob._replace(avatar='avatar2')
roster.update_users([bob2])
assert list(roster.attending_users()) == [bob2]
roster.set_user_attendance(bob, False)
bob3 = bob2._replace(nick='Robert')
roster.update_users([bob3])
assert list(roster.attending_users()) == []