/*
    * 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.input;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.io.IOException;
  import java.io.Reader;
  import java.io.StringReader;
  import java.util.UUID;
  
  import org.apache.commons.io.TaggedIOException;
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link TaggedReader}.
   */
  public class TaggedReaderTest {
  
      @Test
      public void testBrokenReader() {
          final IOException exception = new IOException("test exception");
          final TaggedReader reader = new TaggedReader(new BrokenReader(exception));
  
          // Test the ready() method
          final IOException readyException = assertThrows(IOException.class, reader::ready);
          assertTrue(reader.isCauseOf(readyException));
          final IOException rethrownReadyException = assertThrows(IOException.class, () -> reader.throwIfCauseOf(readyException));
          assertEquals(exception, rethrownReadyException);
  
          // Test the read() method
          final IOException readException = assertThrows(IOException.class, reader::read);
          assertTrue(reader.isCauseOf(readException));
          final IOException rethrownReadException = assertThrows(IOException.class, () -> reader.throwIfCauseOf(readException));
          assertEquals(exception, rethrownReadException);
  
          // Test the close() method
          final IOException closeException = assertThrows(IOException.class, reader::close);
          assertTrue(reader.isCauseOf(closeException));
          final IOException rethrownCloseException = assertThrows(IOException.class, () -> reader.throwIfCauseOf(closeException));
          assertEquals(exception, rethrownCloseException);
      }
  
      @Test
      public void testEmptyReader() throws IOException {
          try (Reader reader = new TaggedReader(ClosedReader.INSTANCE)) {
              assertFalse(reader.ready());
              assertEquals(-1, reader.read());
              assertEquals(-1, reader.read(new char[1]));
              assertEquals(-1, reader.read(new char[1], 0, 1));
          }
      }
  
      @Test
      public void testNormalReader() throws IOException {
          try (Reader reader = new TaggedReader(new StringReader("abc"))) {
              assertTrue(reader.ready());
              assertEquals('a', reader.read());
              final char[] buffer = new char[1];
              assertEquals(1, reader.read(buffer));
              assertEquals('b', buffer[0]);
              assertEquals(1, reader.read(buffer, 0, 1));
              assertEquals('c', buffer[0]);
              assertEquals(-1, reader.read());
          }
      }
  
      @Test
      public void testOtherException() throws Exception {
          final IOException exception = new IOException("test exception");
          try (TaggedReader reader = new TaggedReader(ClosedReader.INSTANCE)) {
  
              assertFalse(reader.isCauseOf(exception));
              assertFalse(reader.isCauseOf(new TaggedIOException(exception, UUID.randomUUID())));
  
              reader.throwIfCauseOf(exception);
  
              reader.throwIfCauseOf(new TaggedIOException(exception, UUID.randomUUID()));
          }
      }
  
  }