hadoop-yarn-project/hadoop-yarn/hadoop-yarn-registry/src/test/java/org/apache/hadoop/registry/client/binding/TestRegistryOperationUtils.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.hadoop.registry.client.binding;

import org.apache.hadoop.security.UserGroupInformation;
import org.junit.Assert;
import org.junit.Test;

/**
 * Tests for the {@link RegistryUtils} class
 */
public class TestRegistryOperationUtils extends Assert {

  @Test
  public void testUsernameExtractionEnvVarOverrride() throws Throwable {
    String whoami = RegistryUtils.getCurrentUsernameUnencoded("drwho");
    assertEquals("drwho", whoami);

  }

  @Test
  public void testUsernameExtractionCurrentuser() throws Throwable {
    String whoami = RegistryUtils.getCurrentUsernameUnencoded("");
    String ugiUser = UserGroupInformation.getCurrentUser().getShortUserName();
    assertEquals(ugiUser, whoami);
  }

  @Test
  public void testShortenUsername() throws Throwable {
    assertEquals("hbase",
        RegistryUtils.convertUsername("hbase@HADOOP.APACHE.ORG"));
    assertEquals("hbase",
        RegistryUtils.convertUsername("hbase/localhost@HADOOP.APACHE.ORG"));
    assertEquals("hbase",
        RegistryUtils.convertUsername("hbase"));
    assertEquals("hbase user",
        RegistryUtils.convertUsername("hbase user"));
  }

}