/*
 * 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.gobblin.data.management.retention;

import java.util.List;
import java.util.Properties;

import org.apache.hadoop.fs.Path;
import org.testng.Assert;
import org.testng.annotations.Test;

import com.google.common.collect.Lists;

import org.apache.gobblin.data.management.retention.policy.NewestKRetentionPolicy;
import org.apache.gobblin.data.management.retention.version.DatasetVersion;
import org.apache.gobblin.data.management.retention.version.StringDatasetVersion;


public class NewestKRetentionPolicyTest {

  @Test
  public void test() {

    Properties props = new Properties();

    NewestKRetentionPolicy policy = new NewestKRetentionPolicy(props);

    StringDatasetVersion datasetVersion1 = new StringDatasetVersion("000_newest", new Path("test"));
    StringDatasetVersion datasetVersion2 = new StringDatasetVersion("001_mid", new Path("test"));
    StringDatasetVersion datasetVersion3 = new StringDatasetVersion("002_oldest", new Path("test"));

    Assert.assertEquals(policy.versionClass(), org.apache.gobblin.data.management.version.DatasetVersion.class);

    List<DatasetVersion> versions = Lists.newArrayList();
    versions.add(datasetVersion1);
    versions.add(datasetVersion2);
    versions.add(datasetVersion3);
    List<DatasetVersion> deletableVersions = Lists.newArrayList(policy.listDeletableVersions(versions));
    Assert.assertEquals(deletableVersions.size(),1);
    Assert.assertEquals(((StringDatasetVersion) deletableVersions.get(0)).getVersion(), "002_oldest");

  }

}
