TestGpgCLI.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.yarn.client.cli;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.junit.Before;
import org.junit.Test;

import java.io.ByteArrayOutputStream;
import java.io.PrintStream;

import static org.junit.Assert.assertEquals;

public class TestGpgCLI {
  private GpgCLI gpgCLI;

  @Before
  public void setup() throws Exception {
    Configuration config = new Configuration();
    config.setBoolean(YarnConfiguration.FEDERATION_ENABLED, true);
    gpgCLI = new GpgCLI(config);
  }

  @Test
  public void testHelp() throws Exception {
    PrintStream oldOutPrintStream = System.out;
    PrintStream oldErrPrintStream = System.err;
    ByteArrayOutputStream dataOut = new ByteArrayOutputStream();
    ByteArrayOutputStream dataErr = new ByteArrayOutputStream();
    System.setOut(new PrintStream(dataOut));
    System.setErr(new PrintStream(dataErr));

    String[] args = {"-help"};
    assertEquals(0, gpgCLI.run(args));
  }
}