Examples with FakeClock org.neo4j.time.FakeClock used on opensource projects

Example 56 with FakeClock

use of org.neo4j.time.FakeClock in project neo4j by neo4j.

the class TransportWriteThrottleTest method shouldThrowThrottleExceptionWhenMaxDurationIsReached.

@Test
void shouldThrowThrottleExceptionWhenMaxDurationIsReached() throws Exception {
    // given
    FakeClock clock = Clocks.fakeClock(1, TimeUnit.SECONDS);
    TransportThrottle throttle = newThrottleAndInstall(channel, new DefaultThrottleLock(), clock, Duration.ofSeconds(5));
    when(channel.isWritable()).thenReturn(false);
    // when
    Future<Void> future = otherThread.execute(() -> {
        throttle.acquire(channel);
        return null;
    });
    otherThread.get().waitUntilWaiting();
    clock.forward(6, TimeUnit.SECONDS);
    // expect
    assertThatExceptionOfType(ExecutionException.class).isThrownBy(() -> future.get(1, TimeUnit.MINUTES)).withCauseInstanceOf(TransportThrottleException.class).withMessageContaining("will be closed because the client did not consume outgoing buffers for");
}

Example 57 with FakeClock

use of org.neo4j.time.FakeClock in project neo4j by neo4j.

the class RaftMachineTest method shouldAppendNewLeaderBarrierAfterBecomingLeader.

@Test
public void shouldAppendNewLeaderBarrierAfterBecomingLeader() throws Exception {
    // Given
    FakeClock fakeClock = Clocks.fakeClock();
    ControlledRenewableTimeoutService timeouts = new ControlledRenewableTimeoutService(fakeClock);
    OutboundMessageCollector messages = new OutboundMessageCollector();
    InMemoryRaftLog raftLog = new InMemoryRaftLog();
    RaftMachine raft = new RaftMachineBuilder(myself, 3, RaftTestMemberSetBuilder.INSTANCE).timeoutService(timeouts).clock(fakeClock).outbound(messages).raftLog(raftLog).build();
    raft.installCoreState(new RaftCoreState(new MembershipEntry(0, asSet(myself, member1, member2))));
    raft.startTimers();
    // When
    timeouts.invokeTimeout(ELECTION);
    raft.handle(voteResponse().from(member1).term(1).grant().build());
    // Then
    assertEquals(new NewLeaderBarrier(), readLogEntry(raftLog, raftLog.appendIndex()).content());
}

Example 58 with FakeClock

use of org.neo4j.time.FakeClock in project neo4j by neo4j.

the class RaftMachineTest method shouldThrowExceptionIfReceivesClientRequestWithNoLeaderElected.

@Test
public void shouldThrowExceptionIfReceivesClientRequestWithNoLeaderElected() throws Exception {
    // Given
    FakeClock fakeClock = Clocks.fakeClock();
    ControlledRenewableTimeoutService timeouts = new ControlledRenewableTimeoutService(fakeClock);
    RaftMachine raft = new RaftMachineBuilder(myself, 3, RaftTestMemberSetBuilder.INSTANCE).timeoutService(timeouts).clock(fakeClock).build();
    raft.installCoreState(new RaftCoreState(new MembershipEntry(0, asSet(myself, member1, member2))));
    raft.startTimers();
    try {
        // When
        // There is no leader
        raft.getLeader();
        fail("Should have thrown exception");
    }// Then
     catch (NoLeaderFoundException e) {
    // expected
    }
}

Example 59 with FakeClock

use of org.neo4j.time.FakeClock in project neo4j by neo4j.

the class RaftMachineTest method shouldNotBecomeLeaderOnMultipleVotesFromSameMember.

@Test
public void shouldNotBecomeLeaderOnMultipleVotesFromSameMember() throws Exception {
    // Given
    FakeClock fakeClock = Clocks.fakeClock();
    ControlledRenewableTimeoutService timeouts = new ControlledRenewableTimeoutService(fakeClock);
    RaftMachine raft = new RaftMachineBuilder(myself, 3, RaftTestMemberSetBuilder.INSTANCE).timeoutService(timeouts).clock(fakeClock).build();
    raft.installCoreState(new RaftCoreState(new MembershipEntry(0, asSet(myself, member1, member2, member3, member4))));
    raft.startTimers();
    timeouts.invokeTimeout(ELECTION);
    // When
    raft.handle(voteResponse().from(member1).term(1).grant().build());
    raft.handle(voteResponse().from(member1).term(1).grant().build());
    // Then
    assertThat(raft.isLeader(), is(false));
}

Example 60 with FakeClock

use of org.neo4j.time.FakeClock in project neo4j by neo4j.

the class RaftMachineTest method shouldNotBecomeLeaderByVotesFromFutureTerm.

@Test
public void shouldNotBecomeLeaderByVotesFromFutureTerm() throws Exception {
    // Given
    FakeClock fakeClock = Clocks.fakeClock();
    ControlledRenewableTimeoutService timeouts = new ControlledRenewableTimeoutService(fakeClock);
    RaftMachine raft = new RaftMachineBuilder(myself, 3, RaftTestMemberSetBuilder.INSTANCE).timeoutService(timeouts).clock(fakeClock).build();
    raft.installCoreState(new RaftCoreState(new MembershipEntry(0, asSet(myself, member1, member2))));
    raft.startTimers();
    timeouts.invokeTimeout(ELECTION);
    // When
    raft.handle(voteResponse().from(member1).term(2).grant().build());
    raft.handle(voteResponse().from(member2).term(2).grant().build());
    assertThat(raft.isLeader(), is(false));
    assertEquals(raft.term(), 2L);
}