content: /*
   * 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.camel.dataformat.deflater;
  
  import java.io.ByteArrayInputStream;
  import java.io.InputStream;
  import java.nio.charset.StandardCharsets;
  import java.util.zip.GZIPInputStream;
  
  import org.apache.camel.builder.RouteBuilder;
  import org.apache.camel.component.mock.MockEndpoint;
  import org.apache.camel.converter.IOConverter;
  import org.apache.camel.test.junit5.CamelTestSupport;
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  /**
   * Unit test of the gzip data format.
   */
  public class GzipDataFormatTest extends CamelTestSupport {
      private static final String TEXT = "Hamlet by William Shakespeare\n"
                                         + "To be, or not to be: that is the question:\n"
                                         + "Whether 'tis nobler in the mind to suffer\n"
                                         + "The slings and arrows of outrageous fortune,\n"
                                         + "Or to take arms against a sea of troubles,\n"
                                         + "And by opposing end them? To die: to sleep;";
  
      @Override
      public boolean isUseRouteBuilder() {
          return false;
      }
  
      private byte[] sendText() {
          return template.requestBody("direct:start", TEXT.getBytes(StandardCharsets.UTF_8), byte[].class);
      }
  
      @Test
      public void testMarshalTextToGZip() throws Exception {
          context.addRoutes(new RouteBuilder() {
              public void configure() {
                  from("direct:start").marshal().gzipDeflater();
              }
          });
          context.start();
  
          byte[] output = sendText();
  
          GZIPInputStream stream = new GZIPInputStream(new ByteArrayInputStream(output));
          String result = IOConverter.toString(stream, null);
          assertEquals(TEXT, result, "Uncompressed something different than compressed");
      }
  
      @Test
      public void testUnMarshalTextToGzip() throws Exception {
          context.addRoutes(new RouteBuilder() {
              public void configure() {
                  from("direct:start").marshal().gzipDeflater().unmarshal().gzipDeflater().to("mock:result");
              }
          });
          context.start();
  
          MockEndpoint result = context.getEndpoint("mock:result", MockEndpoint.class);
          result.expectedBodiesReceived(TEXT.getBytes(StandardCharsets.UTF_8));
  
          sendText();
  
          result.assertIsSatisfied();
      }
  
      /* gzip file with two members, one containing the first 4 bytes of the uncompressed document
       * and one containing the final 6 bytes of the payload.
       * According to the RFC (https://www.rfc-editor.org/rfc/rfc1952#section-2.2) this is allowed.
       */
      @Test
      public void testUnmarshalConcatenatedCompressedFiles() throws Exception {
          context.addRoutes(new RouteBuilder() {
              public void configure() {
                  from("direct:start")
                          .unmarshal().gzipDeflater()
                          .to("mock:result");
              }
          });
          context.start();
  
          byte[] gzBytes;
          try (InputStream gzInput = getClass().getClassLoader().getResourceAsStream("concatenatedZippedFiles.gz")) {
              assert gzInput != null : "concatenatedZippedFiles.gz not found in classpath";
              gzBytes = gzInput.readAllBytes();
          }
  
          MockEndpoint result = context.getEndpoint("mock:result", MockEndpoint.class);
          result.expectedMessageCount(1);
          result.expectedBodiesReceived("foo\nfoobar\n".getBytes(StandardCharsets.UTF_8));
  
          template.sendBody("direct:start", gzBytes);
  
          result.assertIsSatisfied();
      }
  }
  