def test_old_ic_discard(instance_changes, tconf):
frm = "Node1"
view_no = 1
quorum = 2
time_provider = MockTimestamp(0)
instance_changes = InstanceChanges(tconf, time_provider)
msg = InstanceChange(view_no, Suspicions.PRIMARY_DEGRADED.code)
time_provider.value = 0
instance_changes.add_vote(msg, frm)
time_provider.value += tconf.OUTDATED_INSTANCE_CHANGES_CHECK_INTERVAL + 1
assert not instance_changes.has_view(view_no)
instance_changes.add_vote(msg, frm)
time_provider.value += tconf.OUTDATED_INSTANCE_CHANGES_CHECK_INTERVAL + 1
assert not instance_changes.has_inst_chng_from(view_no, frm)
instance_changes.add_vote(msg, frm)
time_provider.value += tconf.OUTDATED_INSTANCE_CHANGES_CHECK_INTERVAL + 1
assert not instance_changes.has_quorum(view_no, quorum)
def test_too_old_messages_dont_count_towards_quorum(instance_changes, tconf):
frm1 = "Node1"
frm2 = "Node2"
view_no = 1
quorum = 2
time_provider = MockTimestamp(0)
instance_changes = InstanceChanges(tconf, time_provider)
msg = InstanceChange(view_no, Suspicions.PRIMARY_DEGRADED.code)
instance_changes.add_vote(msg, frm1)
time_provider.value += (tconf.OUTDATED_INSTANCE_CHANGES_CHECK_INTERVAL/2)
instance_changes.add_vote(msg, frm2)
time_provider.value += (tconf.OUTDATED_INSTANCE_CHANGES_CHECK_INTERVAL/2) + 1
assert not instance_changes.has_quorum(view_no, quorum)
assert instance_changes.has_view(view_no)
assert instance_changes[view_no].msg == msg
assert not instance_changes.has_inst_chng_from(view_no, frm1)
assert instance_changes.has_inst_chng_from(view_no, frm2)