Package org.waveprotocol.wave.concurrencycontrol.client

Source Code of org.waveprotocol.wave.concurrencycontrol.client.MergingSequenceTest

/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/

package org.waveprotocol.wave.concurrencycontrol.client;

import junit.framework.TestCase;

import org.waveprotocol.wave.model.document.operation.DocOp;
import org.waveprotocol.wave.model.document.operation.Nindo;
import org.waveprotocol.wave.model.document.operation.SuperSink;
import org.waveprotocol.wave.model.document.util.DocProviders;
import org.waveprotocol.wave.model.operation.OperationException;
import org.waveprotocol.wave.model.operation.wave.AddParticipant;
import org.waveprotocol.wave.model.operation.wave.BlipContentOperation;
import org.waveprotocol.wave.model.operation.wave.SubmitBlip;
import org.waveprotocol.wave.model.operation.wave.WaveletBlipOperation;
import org.waveprotocol.wave.model.operation.wave.WaveletOperation;
import org.waveprotocol.wave.model.operation.wave.WaveletOperationContext;
import org.waveprotocol.wave.model.wave.ParticipantId;

import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

/**
* Simple test case for the temporary simple merging logic
*
* @author danilatos@google.com (Daniel Danilatos)
*/
public class MergingSequenceTest extends TestCase {

  private Map<String, SuperSink> docs;

  @Override
  public void setUp() throws Exception {
    super.setUp();
    docs = new HashMap<String, SuperSink>();
  }

  public void testOptimiseEmptyDoesNothing() {
    MergingSequence delta = new MergingSequence();
    delta.optimise();
    assertEquals(0, delta.size());
  }

  public void testOptimisesDocumentOpsOnSameBlipWithLastTimestamp() throws OperationException {
    MergingSequence delta = new MergingSequence();

    delta.addAll(Arrays.asList(
        makeBlipContentOp("a", 1),
        makeBlipContentOp("a", 2),
        makeBlipContentOp("a", 3)
    ));

    delta.optimise();

    assertEquals(1, delta.size());
    assertTimestamp(3, delta);
  }

  public void testOptimisesOpsOnSeparateBlips1() throws OperationException {
    MergingSequence delta = new MergingSequence();

    delta.addAll(Arrays.asList(
        makeBlipContentOp("a", 1),
        makeBlipContentOp("a", 2),
        makeBlipContentOp("b", 3)
    ));

    delta.optimise();

    assertEquals(2, delta.size());
  }

  public void testOptimisesOpsOnSeparateBlips2() throws OperationException {
    MergingSequence delta = new MergingSequence();

    delta.addAll(Arrays.asList(
        makeBlipContentOp("a", 1),
        makeBlipContentOp("a", 2),
        makeBlipContentOp("b", 3),
        makeBlipContentOp("b", 4),
        makeBlipContentOp("b", 5),
        makeBlipContentOp("a", 6),
        makeBlipContentOp("a", 7)
    ));

    delta.optimise();

    assertEquals(3, delta.size());
  }

  public void testOptimisesDeltasWithNonDocOps() throws OperationException {
    MergingSequence delta = new MergingSequence();

    delta.addAll(Arrays.asList(
        makeBlipContentOp("a", 2),
        makeBlipContentOp("a", 1),
        makeOtherBlipOp("a", 3)
    ));

    delta.optimise();

    assertEquals(2, delta.size());
  }

  public void testOptimisesDeltasWithNonBlipOps1() throws OperationException {
    MergingSequence delta = new MergingSequence();
    ParticipantId jim = new ParticipantId("jim");
    delta.addAll(Arrays.asList(
        makeBlipContentOp("a", 1),
        makeBlipContentOp("a", 2),
        new AddParticipant(new WaveletOperationContext(jim, 5L, 1L), jim)
    ));

    delta.optimise();

    assertEquals(2, delta.size());
  }

  public void testOptimisesDeltasWithNonBlipOps2() throws OperationException {
    MergingSequence delta = new MergingSequence();
    ParticipantId jim = new ParticipantId("jim");
    delta.addAll(Arrays.asList(
        makeBlipContentOp("a", 1),
        makeBlipContentOp("a", 2),
        new AddParticipant(new WaveletOperationContext(jim, 5L, 1L), jim),
        makeBlipContentOp("a", 4),
        makeBlipContentOp("a", 5)
    ));

    delta.optimise();

    assertEquals(3, delta.size());
  }

  public void testOptimisesDeltasWithNonBlipOps3() throws OperationException {
    MergingSequence delta = new MergingSequence();
    ParticipantId jim = new ParticipantId("jim");
    delta.addAll(Arrays.asList(
        makeBlipContentOp("a", 1),
        makeBlipContentOp("a", 2),
        new AddParticipant(new WaveletOperationContext(jim, 5L, 1L), jim),
        makeBlipContentOp("b", 4),
        makeBlipContentOp("b", 5)
    ));

    delta.optimise();

    assertEquals(3, delta.size());
  }

  private static void assertTimestamp(long timestamp, MergingSequence delta) {
    assertEquals(timestamp,
        ((WaveletBlipOperation) delta.get(0)).getBlipOp().getContext().getTimestamp());
  }

  private WaveletOperation makeBlipContentOp(String id, long timestamp) throws OperationException {
    if (!docs.containsKey(id)) {
      docs.put(id, DocProviders.POJO.parse("<x></x>"));
    }
    Nindo nindo = Nindo.insertCharacters(1, "hi");
    DocOp op = docs.get(id).consumeAndReturnInvertible(nindo);
    return new WaveletBlipOperation(id, new BlipContentOperation(getContext(timestamp), op));
  }

  private WaveletOperation makeOtherBlipOp(String id, long timestamp) {
    return new WaveletBlipOperation(id, new SubmitBlip(getContext(timestamp)));
  }

  private WaveletOperationContext getContext(long timestamp) {
    return new WaveletOperationContext(new ParticipantId("blah"), timestamp, 1L);
  }
}
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