sentry-hdfs/sentry-hdfs-service/src/test/java/org/apache/sentry/hdfs/TestDeltaRetriever.java

/**
 * 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.apache.sentry.hdfs;

import org.apache.sentry.provider.db.service.model.MSentryPathChange;
import org.apache.sentry.provider.db.service.persistent.SentryStore;
import org.junit.Before;
import org.junit.Test;
import org.mockito.Mockito;

import java.util.Arrays;
import java.util.Collections;
import java.util.List;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

public class TestDeltaRetriever {
  SentryStore sentryStoreMock;

  @Before
  public void setUp() {
    sentryStoreMock = Mockito.mock(SentryStore.class);
  }

  @Test
  public void testEmptyPathUpdatesRetrieveWhenNotPathChangesArePersisted() throws Exception {
    Mockito.when(sentryStoreMock.getMSentryPathChanges(Mockito.anyLong()))
        .thenReturn(Collections.<MSentryPathChange>emptyList());

    PathDeltaRetriever deltaRetriever = new PathDeltaRetriever(sentryStoreMock);
    List<PathsUpdate> pathsUpdates = deltaRetriever.retrieveDelta(1, 1);

    assertTrue(pathsUpdates.isEmpty());
  }

  @Test
  public void testDeltaPathUpdatesRetrievedWhenNewPathChangesArePersisted() throws Exception {
    PathDeltaRetriever deltaRetriever;
    List<PathsUpdate> pathsUpdates;

    List<MSentryPathChange> deltaPathChanges = Arrays.asList(
        new MSentryPathChange(1, "u1", new PathsUpdate(1, true)),
        new MSentryPathChange(2, "u2", new PathsUpdate(2, false))
    );

    Mockito.when(sentryStoreMock.getMSentryPathChanges(Mockito.anyLong()))
        .thenReturn(deltaPathChanges);

    deltaRetriever = new PathDeltaRetriever(sentryStoreMock);
    pathsUpdates = deltaRetriever.retrieveDelta(1, 3);

    assertEquals(2, pathsUpdates.size());
    assertEquals(1, pathsUpdates.get(0).getSeqNum());
    assertEquals(true, pathsUpdates.get(0).hasFullImage());
    assertEquals(3, pathsUpdates.get(0).getImgNum());
    assertEquals(2, pathsUpdates.get(1).getSeqNum());
    assertEquals(false, pathsUpdates.get(1).hasFullImage());
    assertEquals(3, pathsUpdates.get(1).getImgNum());
  }
}