package org.apache.maven.plugin.surefire.booterclient.lazytestprovider;
   
   /*
    * 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.
   */
  
  import org.apache.maven.surefire.shared.utils.cli.CommandLineException;
  import org.fest.assertions.Condition;
  import org.junit.Test;
  
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  
  import static org.apache.maven.surefire.shared.lang3.SystemUtils.IS_OS_WINDOWS;
  import static org.fest.assertions.Assertions.assertThat;
  import static org.mockito.Mockito.times;
  import static org.mockito.Mockito.verify;
  import static org.powermock.api.mockito.PowerMockito.mock;
  import static org.powermock.api.mockito.PowerMockito.verifyZeroInteractions;
  
  /**
   *
   */
  public class OutputStreamFlushableCommandlineTest
  {
  
      @Test
      public void shouldGetEnvironmentVariables()
      {
          OutputStreamFlushableCommandline cli = new OutputStreamFlushableCommandline();
          String[] env = cli.getEnvironmentVariables();
  
          assertThat( env )
                  .doesNotHaveDuplicates()
                  .satisfies( new ContainsAnyStartsWith( "JAVA_HOME=" ) );
  
          String[] excluded = { "JAVA_HOME" };
          cli = new OutputStreamFlushableCommandline( excluded );
          env = cli.getEnvironmentVariables();
  
          assertThat( env )
                  .doesNotHaveDuplicates()
                  .satisfies( new NotContainsAnyStartsWith( "JAVA_HOME=" ) );
      }
  
      @Test
      public void shouldExecute() throws CommandLineException
      {
          OutputStreamFlushableCommandline cli = new OutputStreamFlushableCommandline();
          cli.getShell().setWorkingDirectory( System.getProperty( "user.dir" ) );
          cli.getShell().setExecutable( IS_OS_WINDOWS ? "dir" : "ls" );
          assertThat( cli.getFlushReceiver() ).isNull();
          cli.execute();
          assertThat( cli.getFlushReceiver() ).isNotNull();
      }
  
      @Test
      public void shouldGetFlushReceiver()
      {
          OutputStreamFlushableCommandline cli = new OutputStreamFlushableCommandline();
          assertThat( cli.getFlushReceiver() ).isNull();
      }
  
      @Test
      public void shouldFlush() throws IOException
      {
          ByteArrayOutputStream os = mock( ByteArrayOutputStream.class );
          OutputStreamFlushReceiver flushReceiver = new OutputStreamFlushReceiver( os );
          verifyZeroInteractions( os );
          flushReceiver.flush();
          verify( os, times( 1 ) ).flush();
      }
  
      private static final class ContainsAnyStartsWith extends Condition<Object[]>
      {
          private final String expected;
  
          ContainsAnyStartsWith( String expected )
          {
              this.expected = expected;
          }
  
          @Override
          public boolean matches( Object[] values )
         {
             boolean matches = false;
             for ( Object value : values )
             {
                 assertThat( value ).isInstanceOf( String.class );
                 matches |= ( (String) value ).startsWith( expected );
             }
             return matches;
         }
     }
 
     private static final class NotContainsAnyStartsWith extends Condition<Object[]>
     {
         private final String expected;
 
         NotContainsAnyStartsWith( String expected )
         {
             this.expected = expected;
         }
 
         @Override
         public boolean matches( Object[] values )
         {
             boolean matches = false;
             for ( Object value : values )
             {
                 assertThat( value ).isInstanceOf( String.class );
                 matches |= ( (String) value ).startsWith( expected );
             }
             return !matches;
         }
     }
 }