content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio.client.fs;
  
  import static junit.framework.TestCase.assertTrue;
  
  import alluxio.AlluxioURI;
  import alluxio.client.file.FileSystem;
  import alluxio.client.file.FileSystemContext;
  import alluxio.conf.Configuration;
  import alluxio.conf.PropertyKey;
  import alluxio.exception.AccessControlException;
  import alluxio.master.file.FileSystemMaster;
  import alluxio.testutils.LocalAlluxioClusterResource;
  import alluxio.wire.MountPointInfo;
  
  import org.junit.Before;
  import org.junit.ClassRule;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.ExpectedException;
  
  import java.util.Map;
  
  /**
   * Test behavior of {@link FileSystemMaster}, when the paths are readonly.
   */
  public class FileSystemReadonlyIntegrationTest {
    @ClassRule
    public static LocalAlluxioClusterResource sLocalAlluxioClusterResource =
            new LocalAlluxioClusterResource.Builder()
                    .setProperty(PropertyKey.MASTER_MOUNT_TABLE_ROOT_READONLY, true)
                    .build();
    private FileSystem mFileSystem;
  
    @Rule
    public ExpectedException mThrown = ExpectedException.none();
  
    @Before
    public void before() throws Exception {
      FileSystemContext fsCtx = FileSystemContext.create(Configuration.global());
      fsCtx.getClientContext().loadConf(fsCtx.getMasterAddress(), true, true);
      mFileSystem = sLocalAlluxioClusterResource.get().getClient(fsCtx);
    }
  
    @Test
    public void rootMountIsReadonly() throws Exception {
      Map<String, MountPointInfo> mountTable = mFileSystem.getMountTable();
      MountPointInfo rootInfo = mountTable.get("/");
      assertTrue(rootInfo.getReadOnly());
    }
  
    @Test
    public void rootMountWriteDenied() throws Exception {
      // Write operation under a readonly path is not permitted
      mThrown.expect(AccessControlException.class);
      mFileSystem.createFile(new AlluxioURI("/test"));
    }
  }
  