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more logging to make it easier to see what's happening in membership …
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Mark Needham
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Jan 25, 2017
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130 changes: 130 additions & 0 deletions
130
...ausal-clustering/src/test/java/org/neo4j/causalclustering/discovery/CoreTopologyTest.java
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| /* | ||
| * Copyright (c) 2002-2017 "Neo Technology," | ||
| * Network Engine for Objects in Lund AB [http://neotechnology.com] | ||
| * | ||
| * This file is part of Neo4j. | ||
| * | ||
| * Neo4j is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU Affero General Public License as | ||
| * published by the Free Software Foundation, either version 3 of the | ||
| * License, or (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Affero General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Affero General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| package org.neo4j.causalclustering.discovery; | ||
|
|
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| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import java.util.UUID; | ||
|
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| import org.hamcrest.Matchers; | ||
| import org.junit.Test; | ||
|
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| import org.neo4j.causalclustering.identity.ClusterId; | ||
| import org.neo4j.causalclustering.identity.MemberId; | ||
|
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| import static org.hamcrest.MatcherAssert.assertThat; | ||
| import static org.mockito.Mockito.mock; | ||
|
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| public class CoreTopologyTest | ||
| { | ||
| @Test | ||
| public void identicalTopologiesShouldHaveNoDifference() throws Exception | ||
| { | ||
| // given | ||
| UUID one = UUID.randomUUID(); | ||
| UUID two = UUID.randomUUID(); | ||
|
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| Map<MemberId, CoreAddresses> coreMembers = new HashMap<>(); | ||
| coreMembers.put( new MemberId( one ), mock(CoreAddresses.class) ); | ||
| coreMembers.put( new MemberId( two ), mock(CoreAddresses.class) ); | ||
|
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| CoreTopology topology = new CoreTopology( new ClusterId( UUID.randomUUID() ), true, coreMembers ); | ||
|
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| // when | ||
| CoreTopology.TopologyDifference diff = topology.difference(topology); | ||
|
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| // then | ||
| assertThat( diff.added().size(), Matchers.equalTo( 0 ) ); | ||
| assertThat( diff.removed().size(), Matchers.equalTo( 0 ) ); | ||
| } | ||
|
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| @Test | ||
| public void shouldDetectAddedMembers() throws Exception | ||
| { | ||
| // given | ||
| UUID one = UUID.randomUUID(); | ||
| UUID two = UUID.randomUUID(); | ||
|
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| Map<MemberId, CoreAddresses> initialMembers = new HashMap<>(); | ||
| initialMembers.put( new MemberId( one ), mock(CoreAddresses.class) ); | ||
| initialMembers.put( new MemberId( two ), mock(CoreAddresses.class) ); | ||
|
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| Map<MemberId, CoreAddresses> newMembers = new HashMap<>(); | ||
| newMembers.put( new MemberId( one ), mock(CoreAddresses.class) ); | ||
| newMembers.put( new MemberId( two ), mock(CoreAddresses.class) ); | ||
| newMembers.put( new MemberId( UUID.randomUUID() ), mock(CoreAddresses.class) ); | ||
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| CoreTopology topology = new CoreTopology( new ClusterId( UUID.randomUUID() ), true, initialMembers ); | ||
|
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| // when | ||
| CoreTopology.TopologyDifference diff = topology.difference(new CoreTopology( new ClusterId( UUID.randomUUID() ), true, newMembers )); | ||
|
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| // then | ||
| assertThat( diff.added().size(), Matchers.equalTo( 1 ) ); | ||
| assertThat( diff.removed().size(), Matchers.equalTo( 0 ) ); | ||
| } | ||
|
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| @Test | ||
| public void shouldDetectRemovedMembers() throws Exception | ||
| { | ||
| // given | ||
| UUID one = UUID.randomUUID(); | ||
| UUID two = UUID.randomUUID(); | ||
|
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| Map<MemberId, CoreAddresses> initialMembers = new HashMap<>(); | ||
| initialMembers.put( new MemberId( one ), mock(CoreAddresses.class) ); | ||
| initialMembers.put( new MemberId( two ), mock(CoreAddresses.class) ); | ||
|
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| Map<MemberId, CoreAddresses> newMembers = new HashMap<>(); | ||
| newMembers.put( new MemberId( two ), mock(CoreAddresses.class) ); | ||
|
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| CoreTopology topology = new CoreTopology( new ClusterId( UUID.randomUUID() ), true, initialMembers ); | ||
|
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| // when | ||
| CoreTopology.TopologyDifference diff = topology.difference(new CoreTopology( new ClusterId( UUID.randomUUID() ), true, newMembers )); | ||
|
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| // then | ||
| assertThat( diff.added().size(), Matchers.equalTo( 0 ) ); | ||
| assertThat( diff.removed().size(), Matchers.equalTo( 1 ) ); | ||
| } | ||
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| @Test | ||
| public void shouldDetectAddedAndRemovedMembers() throws Exception | ||
| { | ||
| // given | ||
|
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| Map<MemberId, CoreAddresses> initialMembers = new HashMap<>(); | ||
| initialMembers.put( new MemberId( UUID.randomUUID() ), mock(CoreAddresses.class) ); | ||
| initialMembers.put( new MemberId( UUID.randomUUID() ), mock(CoreAddresses.class) ); | ||
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| Map<MemberId, CoreAddresses> newMembers = new HashMap<>(); | ||
| newMembers.put( new MemberId( UUID.randomUUID() ), mock(CoreAddresses.class) ); | ||
| newMembers.put( new MemberId( UUID.randomUUID() ), mock(CoreAddresses.class) ); | ||
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| CoreTopology topology = new CoreTopology( new ClusterId( UUID.randomUUID() ), true, initialMembers ); | ||
|
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| // when | ||
| CoreTopology.TopologyDifference diff = topology.difference(new CoreTopology( new ClusterId( UUID.randomUUID() ), true, newMembers )); | ||
|
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| // then | ||
| assertThat( diff.added().size(), Matchers.equalTo( 2 ) ); | ||
| assertThat( diff.removed().size(), Matchers.equalTo( 2 ) ); | ||
| } | ||
| } |
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