/*
    * #%L
    * xcode-maven-plugin
    * %%
    * Copyright (C) 2012 SAP AG
    * %%
    * Licensed 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.
   * #L%
   */
  package com.sap.prd.mobile.ios.mios;
  
  import java.io.File;
  import java.io.IOException;
  import java.io.OutputStream;
  import java.io.PrintStream;
  
  import junit.framework.Assert;
  
  import org.apache.commons.io.output.ByteArrayOutputStream;
  import org.junit.Test;
  
  import com.sap.prd.mobile.ios.mios.Forker;
  
  public class ForkerTest
  {
  
    @Test
    public void testStraightForward() throws Exception
    {
  
      final ByteArrayOutputStream out = new ByteArrayOutputStream();
      final PrintStream log = new PrintStream(out, true);
  
      try {
  
        Forker.forkProcess(log, new File(".").getAbsoluteFile(), "echo", "Hello World");
  
      }
      finally {
        log.close();
      }
  
      Assert.assertEquals("Hello World\n", new String(out.toByteArray()));
    }
  
    @Test(expected = IllegalArgumentException.class)
    public void testMissingPrintStreamForLogging() throws Exception
    {
      Forker.forkProcess(null, new File(".").getAbsoluteFile(), "echo", "Hello World");
    }
  
    @Test(expected = IllegalArgumentException.class)
    public void testMissingArguments_1() throws Exception
    {
  
      final ByteArrayOutputStream out = new ByteArrayOutputStream();
      final PrintStream log = new PrintStream(out, true);
  
      try {
  
        Forker.forkProcess(log, new File(".").getAbsoluteFile(), (String[]) null);
  
      }
      finally {
        log.close();
      }
  
    }
  
    @Test(expected = IllegalArgumentException.class)
    public void testMissingArguments_2() throws Exception
    {
  
      final ByteArrayOutputStream out = new ByteArrayOutputStream();
      final PrintStream log = new PrintStream(out, true);
  
      try {
  
        Forker.forkProcess(log, new File(".").getAbsoluteFile(), new String[0]);
  
      }
      finally {
        log.close();
      }
    }
  
    @Test(expected = IllegalArgumentException.class)
    public void testMissingArguments_3() throws Exception
    {
 
     final ByteArrayOutputStream out = new ByteArrayOutputStream();
     final PrintStream log = new PrintStream(out, true);
 
     try {
 
       Forker.forkProcess(log, new File(".").getAbsoluteFile(), "echo", "", "Hello World");
 
     }
     finally {
       log.close();
     }
   }
 
   @Test(expected = IOException.class)
   public void damagedPrintStream() throws Exception
   {
 
     final ByteArrayOutputStream out = new ByteArrayOutputStream();
 
     class DamagedPrintStream extends PrintStream
     {
       public DamagedPrintStream(OutputStream out)
       {
         super(out);
         setError();
       }
     }
     final PrintStream log = new DamagedPrintStream(out);
 
     try {
 
       Forker.forkProcess(log, new File(".").getAbsoluteFile(), "echo", "Hello World");
 
     }
     finally {
       log.close();
     }
   }
 
 }