Example #1
0
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void candidateShouldWinElectionAndBecomeLeader() throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
        public virtual void CandidateShouldWinElectionAndBecomeLeader()
        {
            // given
            FakeClock    fakeClock = Clocks.fakeClock();
            TimerService timeouts  = new OnDemandTimerService(fakeClock);
            RaftMachine  raft      = (new RaftMachineBuilder(_myself, 3, RaftTestMemberSetBuilder.INSTANCE)).outbound(_outbound).timerService(timeouts).clock(fakeClock).build();

            raft.InstallCoreState(new RaftCoreState(new MembershipEntry(0, asSet(_myself, _member1, _member2))));
            raft.PostRecoveryActions();

            timeouts.Invoke(RaftMachine.Timeouts.ELECTION);

            // when
            raft.Handle(voteResponse().from(_member1).term(1).grant().build());
            raft.Handle(voteResponse().from(_member2).term(1).grant().build());

            // then
            assertEquals(1, raft.Term());
            assertEquals(LEADER, raft.CurrentRole());

            /*
             * We require atLeast here because RaftMachine has its own scheduled service, which can spuriously wake up and
             * send empty entries. These are fine and have no bearing on the correctness of this test, but can cause it
             * fail if we expect exactly 2 of these messages
             */
            verify(_outbound, atLeast(1)).send(eq(_member1), isA(typeof(Org.Neo4j.causalclustering.core.consensus.RaftMessages_AppendEntries_Request)));
            verify(_outbound, atLeast(1)).send(eq(_member2), isA(typeof(Org.Neo4j.causalclustering.core.consensus.RaftMessages_AppendEntries_Request)));
        }
Example #2
0
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void candidateShouldLoseElectionAndRemainCandidate() throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
        public virtual void CandidateShouldLoseElectionAndRemainCandidate()
        {
            // Note the etcd implementation seems to diverge from the paper here, since the paper suggests that it should
            // remain as a candidate

            // given
            FakeClock    fakeClock = Clocks.fakeClock();
            TimerService timeouts  = new OnDemandTimerService(fakeClock);
            RaftMachine  raft      = (new RaftMachineBuilder(_myself, 3, RaftTestMemberSetBuilder.INSTANCE)).outbound(_outbound).timerService(timeouts).clock(fakeClock).build();

            raft.InstallCoreState(new RaftCoreState(new MembershipEntry(0, asSet(_myself, _member1, _member2))));
            raft.PostRecoveryActions();

            timeouts.Invoke(RaftMachine.Timeouts.ELECTION);

            // when
            raft.Handle(voteResponse().from(_member1).term(1).deny().build());
            raft.Handle(voteResponse().from(_member2).term(1).deny().build());

            // then
            assertEquals(1, raft.Term());
            assertEquals(CANDIDATE, raft.CurrentRole());

            verify(_outbound, never()).send(eq(_member1), isA(typeof(Org.Neo4j.causalclustering.core.consensus.RaftMessages_AppendEntries_Request)));
            verify(_outbound, never()).send(eq(_member2), isA(typeof(Org.Neo4j.causalclustering.core.consensus.RaftMessages_AppendEntries_Request)));
        }
Example #3
0
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void candidateShouldVoteForTheSameCandidateInTheSameTerm() throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
        public virtual void CandidateShouldVoteForTheSameCandidateInTheSameTerm()
        {
            // given
            FakeClock    fakeClock = Clocks.fakeClock();
            TimerService timeouts  = new OnDemandTimerService(fakeClock);
            RaftMachine  raft      = (new RaftMachineBuilder(_myself, 3, RaftTestMemberSetBuilder.INSTANCE)).outbound(_outbound).timerService(timeouts).clock(fakeClock).build();

            raft.InstallCoreState(new RaftCoreState(new MembershipEntry(0, asSet(_myself, _member1, _member2))));

            // when
            raft.Handle(voteRequest().from(_member1).candidate(_member1).term(1).build());
            raft.Handle(voteRequest().from(_member1).candidate(_member1).term(1).build());

            // then
            verify(_outbound, times(2)).send(_member1, voteResponse().term(1).grant().build());
        }