/*
    * 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.io.output;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.junit.jupiter.api.Assertions.fail;
  
  import java.io.IOException;
  import java.io.OutputStream;
  import java.util.UUID;
  
  import org.apache.commons.io.TaggedIOException;
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link TaggedOutputStream}.
   */
  public class TaggedOutputStreamTest  {
  
      @Test
      public void testBrokenStream() {
          final IOException exception = new IOException("test exception");
          final TaggedOutputStream stream = new TaggedOutputStream(new BrokenOutputStream(exception));
  
          // Test the write() method
          try {
              stream.write('x');
              fail("Expected exception not thrown.");
          } catch (final IOException e) {
              assertTrue(stream.isCauseOf(e));
              try {
                  stream.throwIfCauseOf(e);
                  fail("Expected exception not thrown.");
              } catch (final IOException e2) {
                  assertEquals(exception, e2);
              }
          }
  
          // Test the flush() method
          try {
              stream.flush();
              fail("Expected exception not thrown.");
          } catch (final IOException e) {
              assertTrue(stream.isCauseOf(e));
              try {
                  stream.throwIfCauseOf(e);
                  fail("Expected exception not thrown.");
              } catch (final IOException e2) {
                  assertEquals(exception, e2);
              }
          }
  
          // Test the close() method
          try {
              stream.close();
              fail("Expected exception not thrown.");
          } catch (final IOException e) {
              assertTrue(stream.isCauseOf(e));
              try {
                  stream.throwIfCauseOf(e);
                  fail("Expected exception not thrown.");
              } catch (final IOException e2) {
                  assertEquals(exception, e2);
              }
          }
      }
  
      @Test
      public void testNormalStream() {
          try (ByteArrayOutputStream buffer = new ByteArrayOutputStream()) {
              try (OutputStream stream = new TaggedOutputStream(buffer)) {
                  stream.write('a');
                  stream.write(new byte[] { 'b' });
                  stream.write(new byte[] { 'c' }, 0, 1);
                  stream.flush();
              }
              assertEquals(3, buffer.size());
              assertEquals('a', buffer.toByteArray()[0]);
              assertEquals('b', buffer.toByteArray()[1]);
              assertEquals('c', buffer.toByteArray()[2]);
          } catch (final IOException e) {
              fail("Unexpected exception thrown");
          }
     }
 
     @Test
     public void testOtherException() throws Exception {
         final IOException exception = new IOException("test exception");
         try (TaggedOutputStream stream = new TaggedOutputStream(ClosedOutputStream.INSTANCE)) {
 
             assertFalse(stream.isCauseOf(exception));
             assertFalse(stream.isCauseOf(new TaggedIOException(exception, UUID.randomUUID())));
 
             try {
                 stream.throwIfCauseOf(exception);
             } catch (final IOException e) {
                 fail("Unexpected exception thrown");
             }
 
             try {
                 stream.throwIfCauseOf(new TaggedIOException(exception, UUID.randomUUID()));
             } catch (final IOException e) {
                 fail("Unexpected exception thrown");
             }
         }
     }
 
 }