/*
    * 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.assertThrows;
  
  import java.io.BufferedInputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.UncheckedIOException;
  
  import org.apache.commons.io.IOUtils;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link UncheckedFilterInputStream}.
   */
  public class UncheckedFilterInputStreamTest {
  
      private UncheckedFilterInputStream stringInputStream;
      private UncheckedFilterInputStream brokenInputStream;
      private IOException exception = new IOException("test exception");
  
      @SuppressWarnings("resource")
      @BeforeEach
      public void beforeEach() {
          stringInputStream = UncheckedFilterInputStream.builder()
                  .setInputStream(new BufferedInputStream(CharSequenceInputStream.builder().setCharSequence("01").get())).get();
          exception = new IOException("test exception");
          brokenInputStream = UncheckedFilterInputStream.builder().setInputStream(new BrokenInputStream(exception)).get();
      }
  
      @Test
      public void testClose() {
          stringInputStream.close();
          assertThrows(UncheckedIOException.class, () -> brokenInputStream.read());
      }
  
      @Test
      public void testCloseThrows() {
          assertEquals(exception, assertThrows(UncheckedIOException.class, () -> brokenInputStream.close()).getCause());
      }
  
      @Test
      public void testMarkReset() {
          stringInputStream.mark(10);
          final int c = stringInputStream.read();
          stringInputStream.reset();
          assertEquals(c, stringInputStream.read());
      }
  
      @Test
      public void testRead() {
          final InputStream inputStream = stringInputStream;
          try (UncheckedFilterInputStream uncheckedReader = UncheckedFilterInputStream.builder().setInputStream(inputStream).get()) {
              assertEquals('0', uncheckedReader.read());
              assertEquals('1', uncheckedReader.read());
              assertEquals(IOUtils.EOF, uncheckedReader.read());
              assertEquals(IOUtils.EOF, uncheckedReader.read());
          }
      }
  
      @Test
      public void testReadByteArray() {
          final InputStream inputStream = stringInputStream;
          try (UncheckedFilterInputStream uncheckedReader = UncheckedFilterInputStream.builder().setInputStream(inputStream).get()) {
              final byte[] array = new byte[1];
              assertEquals(1, uncheckedReader.read(array));
              assertEquals('0', array[0]);
              array[0] = 0;
              assertEquals(1, uncheckedReader.read(array));
              assertEquals('1', array[0]);
              array[0] = 0;
              assertEquals(IOUtils.EOF, uncheckedReader.read(array));
              assertEquals(0, array[0]);
              assertEquals(IOUtils.EOF, uncheckedReader.read(array));
              assertEquals(0, array[0]);
          }
      }
  
      @Test
      public void testReadByteArrayIndexed() {
         final InputStream inputStream = stringInputStream;
         try (UncheckedFilterInputStream uncheckedReader = UncheckedFilterInputStream.builder().setInputStream(inputStream).get()) {
             final byte[] array = new byte[1];
             assertEquals(1, uncheckedReader.read(array, 0, 1));
             assertEquals('0', array[0]);
             array[0] = 0;
             assertEquals(1, uncheckedReader.read(array, 0, 1));
             assertEquals('1', array[0]);
             array[0] = 0;
             assertEquals(IOUtils.EOF, uncheckedReader.read(array, 0, 1));
             assertEquals(0, array[0]);
             assertEquals(IOUtils.EOF, uncheckedReader.read(array, 0, 1));
             assertEquals(0, array[0]);
         }
     }
 
     @Test
     public void testReadByteArrayIndexedThrows() {
         assertEquals(exception, assertThrows(UncheckedIOException.class, () -> brokenInputStream.read(new byte[1], 0, 1)).getCause());
     }
 
     @Test
     public void testReadByteArrayThrows() {
         assertEquals(exception, assertThrows(UncheckedIOException.class, () -> brokenInputStream.read(new byte[1])).getCause());
     }
 
     @Test
     public void testReadThrows() {
         assertEquals(exception, assertThrows(UncheckedIOException.class, () -> brokenInputStream.read()).getCause());
     }
 
     @Test
     public void testResetThrows() {
         try (UncheckedFilterInputStream closedReader = UncheckedFilterInputStream.builder().setInputStream(ClosedInputStream.INSTANCE).get()) {
             closedReader.close();
             assertThrows(UncheckedIOException.class, () -> brokenInputStream.reset());
         }
     }
 
     @Test
     public void testSkip() {
         assertEquals(1, stringInputStream.skip(1));
     }
 
     @Test
     public void testSkipThrows() {
         assertEquals(exception, assertThrows(UncheckedIOException.class, () -> brokenInputStream.skip(1)).getCause());
     }
 
 }