/*
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    * 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
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  package org.apache.hc.client5.http.impl.classic;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.net.SocketException;
  
  import org.apache.hc.client5.http.classic.ExecRuntime;
  import org.apache.hc.core5.http.HttpEntity;
  import org.apache.hc.core5.http.io.entity.EntityUtils;
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.mockito.Mockito;
  
  @SuppressWarnings("boxing") // test code
  public class TestResponseEntityWrapper {
  
      private InputStream inStream;
      private HttpEntity entity;
      private ExecRuntime execRuntime;
      private ResponseEntityProxy wrapper;
  
      @BeforeEach
      public void setup() throws Exception {
          inStream = Mockito.mock(InputStream.class);
          entity = Mockito.mock(HttpEntity.class);
          Mockito.when(entity.getContent()).thenReturn(inStream);
          execRuntime = Mockito.mock(ExecRuntime.class);
          wrapper = new ResponseEntityProxy(entity, execRuntime);
      }
  
      @Test
      public void testReusableEntityStreamClosed() throws Exception {
          Mockito.when(entity.isStreaming()).thenReturn(true);
          Mockito.when(execRuntime.isConnectionReusable()).thenReturn(true);
          EntityUtils.consume(wrapper);
  
          Mockito.verify(inStream, Mockito.times(1)).close();
          Mockito.verify(execRuntime).releaseEndpoint();
      }
  
      @Test
      public void testReusableEntityStreamClosedIOError() throws Exception {
          Mockito.when(entity.isStreaming()).thenReturn(true);
          Mockito.when(execRuntime.isConnectionReusable()).thenReturn(true);
          Mockito.doThrow(new IOException()).when(inStream).close();
          Assertions.assertThrows(IOException.class, () -> EntityUtils.consume(wrapper));
          Mockito.verify(execRuntime, Mockito.atLeast(1)).discardEndpoint();
      }
  
      @Test
      public void testEntityStreamClosedIOErrorAlreadyReleased() throws Exception {
          Mockito.when(entity.isStreaming()).thenReturn(true);
          Mockito.when(execRuntime.isConnectionReusable()).thenReturn(true);
          Mockito.when(execRuntime.isEndpointAcquired()).thenReturn(false);
          Mockito.doThrow(new SocketException()).when(inStream).close();
          EntityUtils.consume(wrapper);
          Mockito.verify(execRuntime).discardEndpoint();
      }
  
      @Test
      public void testReusableEntityWriteTo() throws Exception {
          final OutputStream outStream = Mockito.mock(OutputStream.class);
          Mockito.when(entity.isStreaming()).thenReturn(true);
          Mockito.when(execRuntime.isConnectionReusable()).thenReturn(true);
          wrapper.writeTo(outStream);
          Mockito.verify(execRuntime).releaseEndpoint();
      }
  
      @Test
      public void testReusableEntityWriteToIOError() throws Exception {
          final OutputStream outStream = Mockito.mock(OutputStream.class);
         Mockito.when(entity.isStreaming()).thenReturn(true);
         Mockito.when(execRuntime.isConnectionReusable()).thenReturn(true);
         Mockito.doThrow(new IOException()).when(entity).writeTo(outStream);
         Assertions.assertThrows(IOException.class, () -> wrapper.writeTo(outStream));
         Mockito.verify(execRuntime, Mockito.never()).releaseEndpoint();
         Mockito.verify(execRuntime, Mockito.atLeast(1)).discardEndpoint();
     }
 
     @Test
     public void testReusableEntityEndOfStream() throws Exception {
         Mockito.when(inStream.read()).thenReturn(-1);
         Mockito.when(entity.isStreaming()).thenReturn(true);
         Mockito.when(execRuntime.isConnectionReusable()).thenReturn(true);
         final InputStream content = wrapper.getContent();
         Assertions.assertEquals(-1, content.read());
         Mockito.verify(inStream).close();
         Mockito.verify(execRuntime).releaseEndpoint();
     }
 
     @Test
     public void testReusableEntityEndOfStreamIOError() throws Exception {
         Mockito.when(inStream.read()).thenReturn(-1);
         Mockito.when(entity.isStreaming()).thenReturn(true);
         Mockito.when(execRuntime.isConnectionReusable()).thenReturn(true);
         Mockito.doThrow(new IOException()).when(inStream).close();
         final InputStream content = wrapper.getContent();
         Assertions.assertThrows(IOException.class, () -> content.read());
         Mockito.verify(execRuntime, Mockito.atLeast(1)).discardEndpoint();
     }
 
 }