[participation2, participation1] = Participation.for_user(other_user)
assert Participation.get(participation2.id).read == false
assert Participation.get(participation1.id).read == false
[participation2, participation1] = Participation.for_user(other_user)
assert Participation.get(participation2.id).read == false
assert Participation.get(participation1.id).read == false