text: /**
   * 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.hadoop.yarn.server.timeline.security;
  
  import org.apache.hadoop.conf.Configuration;
  import org.apache.hadoop.security.UserGroupInformation;
  import org.apache.hadoop.yarn.api.records.timeline.TimelineEntity;
  import org.apache.hadoop.yarn.conf.YarnConfiguration;
  import org.apache.hadoop.yarn.exceptions.YarnException;
  import org.apache.hadoop.yarn.server.timeline.TimelineStore;
  import org.apache.hadoop.yarn.server.timeline.security.TimelineACLsManager;
  import org.junit.Assert;
  import org.junit.Test;
  
  public class TestTimelineACLsManager {
  
    @Test
    public void testYarnACLsNotEnabled() throws Exception {
      Configuration conf = new YarnConfiguration();
      conf.setBoolean(YarnConfiguration.YARN_ACL_ENABLE, false);
      TimelineACLsManager timelineACLsManager =
          new TimelineACLsManager(conf);
      TimelineEntity entity = new TimelineEntity();
      entity.addPrimaryFilter(
          TimelineStore.SystemFilter.ENTITY_OWNER
              .toString(), "owner");
      Assert.assertTrue(
          "Always true when ACLs are not enabled",
          timelineACLsManager.checkAccess(
              UserGroupInformation.createRemoteUser("user"), entity));
    }
  
    @Test
    public void testYarnACLsEnabled() throws Exception {
      Configuration conf = new YarnConfiguration();
      conf.setBoolean(YarnConfiguration.YARN_ACL_ENABLE, true);
      conf.set(YarnConfiguration.YARN_ADMIN_ACL, "admin");
      TimelineACLsManager timelineACLsManager =
          new TimelineACLsManager(conf);
      TimelineEntity entity = new TimelineEntity();
      entity.addPrimaryFilter(
          TimelineStore.SystemFilter.ENTITY_OWNER
              .toString(), "owner");
      Assert.assertTrue(
          "Owner should be allowed to access",
          timelineACLsManager.checkAccess(
              UserGroupInformation.createRemoteUser("owner"), entity));
      Assert.assertFalse(
          "Other shouldn't be allowed to access",
          timelineACLsManager.checkAccess(
              UserGroupInformation.createRemoteUser("other"), entity));
      Assert.assertTrue(
          "Admin should be allowed to access",
          timelineACLsManager.checkAccess(
              UserGroupInformation.createRemoteUser("admin"), entity));
    }
  
    @Test
    public void testCorruptedOwnerInfo() throws Exception {
      Configuration conf = new YarnConfiguration();
      conf.setBoolean(YarnConfiguration.YARN_ACL_ENABLE, true);
      conf.set(YarnConfiguration.YARN_ADMIN_ACL, "owner");
      TimelineACLsManager timelineACLsManager =
          new TimelineACLsManager(conf);
      TimelineEntity entity = new TimelineEntity();
      try {
        timelineACLsManager.checkAccess(
            UserGroupInformation.createRemoteUser("owner"), entity);
        Assert.fail("Exception is expected");
      } catch (YarnException e) {
        Assert.assertTrue("It's not the exact expected exception", e.getMessage()
            .contains("is corrupted."));
      }
    }
  
  }
  