/*
    * 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.commons.collections.primitives.adapters.io;
  
  import java.io.ByteArrayInputStream;
  import java.io.IOException;
  import java.io.InputStream;
  
  import junit.framework.Test;
  import junit.framework.TestSuite;
  
  import org.apache.commons.collections.primitives.ByteIterator;
  import org.apache.commons.collections.primitives.TestByteIterator;
  
  /**
   * @version $Revision: 480451 $ $Date: 2006-11-29 02:45:08 -0500 (Wed, 29 Nov 2006) $
   * @author Rodney Waldhoff
   */
  public class TestInputStreamByteIterator extends TestByteIterator {
  
      // conventional
      // ------------------------------------------------------------------------
  
      public TestInputStreamByteIterator(String testName) {
          super(testName);
      }
  
      public static Test suite() {
          return new TestSuite(TestInputStreamByteIterator.class);
      }
  
      // ------------------------------------------------------------------------
      
      public boolean supportsRemove() {
          return false;
      }
  
      protected ByteIterator makeEmptyByteIterator() {
          return new InputStreamByteIterator(new ByteArrayInputStream(new byte[0]));
      }
  
      protected ByteIterator makeFullByteIterator() {
          return new InputStreamByteIterator(new ByteArrayInputStream(getFullElements()));
      }
  
      protected byte[] getFullElements() {
          byte[] bytes = new byte[256];
          for(int i=0; i < 256; i++) {
              bytes[i] = (byte)(i-128);
          }
          return bytes;
      }
  
  
      // ------------------------------------------------------------------------
      
      public void testErrorThrowingStream() {
          InputStream errStream = new InputStream() {
              public int read() throws IOException {
                  throw new IOException();
              }
          };
          
          ByteIterator iter = new InputStreamByteIterator(errStream);
          try {
              iter.hasNext();
              fail("Expected RuntimeException");
          } catch(RuntimeException e) {
              // expected
          } 
          try {
              iter.next();
              fail("Expected RuntimeException");
          } catch(RuntimeException e) {
              // expected
          } 
      }
      
      public void testAdaptNull() {
          assertNull(InputStreamByteIterator.adapt(null));
      }
  
      public void testAdaptNonNull() {
          assertNotNull(InputStreamByteIterator.adapt(new ByteArrayInputStream(new byte[0])));
      }
 }