/*
    * 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
    *
    *      https://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.assertThrowsExactly;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.io.ByteArrayInputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.nio.charset.StandardCharsets;
  import java.util.concurrent.atomic.AtomicBoolean;
  
  import org.apache.commons.io.IOUtils;
  import org.apache.commons.io.test.CustomIOException;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link AutoCloseInputStream}.
   */
  class AutoCloseInputStreamTest {
  
      private byte[] data;
  
      private AutoCloseInputStream stream;
  
      @SuppressWarnings("deprecation")
      @BeforeEach
      public void setUp() {
          data = new byte[] { 'x', 'y', 'z' };
          stream = new AutoCloseInputStream(new ByteArrayInputStream(data));
      }
  
      @Test
      void testAfterReadConsumer() throws Exception {
          final byte[] hello = "Hello".getBytes(StandardCharsets.UTF_8);
          final AtomicBoolean boolRef = new AtomicBoolean();
          // @formatter:off
          try (InputStream bounded = AutoCloseInputStream.builder()
                  .setInputStream(new ByteArrayInputStream(hello))
                  .setAfterRead(i -> boolRef.set(true))
                  .get()) {
              IOUtils.consume(bounded);
          }
          // @formatter:on
          assertTrue(boolRef.get());
          // Throwing
          final String message = "test exception message";
          // @formatter:off
          try (InputStream bounded = AutoCloseInputStream.builder()
                  .setInputStream(new ByteArrayInputStream(hello))
                  .setAfterRead(i -> {
                      throw new CustomIOException(message);
                  })
                  .get()) {
              assertEquals(message, assertThrowsExactly(CustomIOException.class, () -> IOUtils.consume(bounded)).getMessage());
          }
          // @formatter:on
      }
  
      @Test
      void testAvailableAfterClose() throws IOException {
          final InputStream shadow;
          try (InputStream inputStream = new AutoCloseInputStream(new ByteArrayInputStream(data))) {
              assertEquals(3, inputStream.available());
              shadow = inputStream;
          }
          assertEquals(0, shadow.available());
      }
  
      @Test
      void testAvailableAll() throws IOException {
          try (InputStream inputStream = new AutoCloseInputStream(new ByteArrayInputStream(data))) {
              assertEquals(3, inputStream.available());
              IOUtils.toByteArray(inputStream);
              assertEquals(0, inputStream.available());
          }
      }
  
      @Test
      void testAvailableNull() throws IOException {
         try (InputStream inputStream = new AutoCloseInputStream(null)) {
             assertEquals(0, inputStream.available());
             assertEquals(0, inputStream.available());
         }
     }
 
     @Test
     void testBuilderGet() {
         // java.lang.IllegalStateException: origin == null
         assertThrows(IllegalStateException.class, () -> AutoCloseInputStream.builder().get());
     }
 
     @Test
     void testClose() throws IOException {
         stream.close();
         assertTrue(stream.isClosed(), "closed");
         assertEquals(-1, stream.read(), "read()");
         assertTrue(stream.isClosed(), "closed");
     }
 
     @Test
     void testCloseHandleIOException() throws IOException {
         ProxyInputStreamTest.testCloseHandleIOException(AutoCloseInputStream.builder());
     }
 
     @Test
     void testFinalize() throws Throwable {
         stream.finalize();
         assertTrue(stream.isClosed(), "closed");
         assertEquals(-1, stream.read(), "read()");
     }
 
     @Test
     void testRead() throws IOException {
         for (final byte element : data) {
             assertEquals(element, stream.read(), "read()");
             assertFalse(stream.isClosed(), "closed");
         }
         assertEquals(-1, stream.read(), "read()");
         assertTrue(stream.isClosed(), "closed");
     }
 
     @Test
     void testReadBuffer() throws IOException {
         final byte[] b = new byte[data.length * 2];
         int total = 0;
         for (int n = 0; n != -1; n = stream.read(b)) {
             assertFalse(stream.isClosed(), "closed");
             for (int i = 0; i < n; i++) {
                 assertEquals(data[total + i], b[i], "read(b)");
             }
             total += n;
         }
         assertEquals(data.length, total, "read(b)");
         assertTrue(stream.isClosed(), "closed");
         assertEquals(-1, stream.read(b), "read(b)");
     }
 
     @Test
     void testReadBufferOffsetLength() throws IOException {
         final byte[] b = new byte[data.length * 2];
         int total = 0;
         for (int n = 0; n != -1; n = stream.read(b, total, b.length - total)) {
             assertFalse(stream.isClosed(), "closed");
             total += n;
         }
         assertEquals(data.length, total, "read(b, off, len)");
         for (int i = 0; i < data.length; i++) {
             assertEquals(data[i], b[i], "read(b, off, len)");
         }
         assertTrue(stream.isClosed(), "closed");
         assertEquals(-1, stream.read(b, 0, b.length), "read(b, off, len)");
     }
 
     private void testResetBeforeEnd(final AutoCloseInputStream inputStream) throws IOException {
         inputStream.mark(1);
         assertEquals('1', inputStream.read());
         inputStream.reset();
         assertEquals('1', inputStream.read());
         assertEquals('2', inputStream.read());
         inputStream.reset();
         assertEquals('1', inputStream.read());
         assertEquals('2', inputStream.read());
         assertEquals('3', inputStream.read());
         inputStream.reset();
         assertEquals('1', inputStream.read());
         assertEquals('2', inputStream.read());
         assertEquals('3', inputStream.read());
         assertEquals('4', inputStream.read());
         inputStream.reset();
         assertEquals('1', inputStream.read());
     }
 
     @Test
     void testResetBeforeEndCtor() throws IOException {
         try (AutoCloseInputStream inputStream = new AutoCloseInputStream(new ByteArrayInputStream("1234".getBytes()))) {
             testResetBeforeEnd(inputStream);
         }
     }
 
     @Test
     void testResetBeforeEndSetByteArray() throws IOException {
         try (AutoCloseInputStream inputStream = AutoCloseInputStream.builder().setByteArray("1234".getBytes()).get()) {
             testResetBeforeEnd(inputStream);
         }
     }
 
     @Test
     void testResetBeforeEndSetCharSequence() throws IOException {
         try (AutoCloseInputStream inputStream = AutoCloseInputStream.builder().setCharSequence("1234").get()) {
             testResetBeforeEnd(inputStream);
         }
     }
 
     @Test
     void testResetBeforeEndSetInputStream() throws IOException {
         try (AutoCloseInputStream inputStream = AutoCloseInputStream.builder().setInputStream(new ByteArrayInputStream("1234".getBytes())).get()) {
             testResetBeforeEnd(inputStream);
         }
     }
 
     @Test
     void testrReadAfterClose() throws IOException {
         final InputStream shadow;
         try (InputStream inputStream = new AutoCloseInputStream(new ByteArrayInputStream(data))) {
             assertEquals(3, inputStream.available());
             shadow = inputStream;
         }
         assertEquals(IOUtils.EOF, shadow.read());
     }
 
 }