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.component.stream;
  
  import java.io.OutputStream;
  
  import org.apache.camel.builder.RouteBuilder;
  import org.apache.camel.test.junit5.CamelTestSupport;
  import org.junit.jupiter.api.Test;
  
  import static org.apache.camel.component.stream.StreamGroupLinesTest.LS;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  /**
   * Unit test when using custom output stream.
   */
  public class StreamHeaderTest extends CamelTestSupport {
  
      // START SNIPPET: e1
      private OutputStream mystream = new MyOutputStream();
      private StringBuilder sb = new StringBuilder();
  
      @Test
      public void testStringContent() {
          template.sendBody("direct:in", "Hello");
          // StreamProducer appends \n in text mode
          assertEquals("Hello" + LS, sb.toString());
      }
  
      @Test
      public void testBinaryContent() {
          template.sendBody("direct:in", "Hello".getBytes());
          // StreamProducer is in binary mode so no \n is appended
          assertEquals("Hello" + LS, sb.toString());
      }
  
      @Override
      protected RouteBuilder createRouteBuilder() {
          return new RouteBuilder() {
              public void configure() {
                  from("direct:in").setHeader("stream", constant(mystream)).to("stream:header");
              }
          };
      }
  
      private class MyOutputStream extends OutputStream {
  
          @Override
          public void write(int b) {
              sb.append((char) b);
          }
      }
      // END SNIPPET: e1
  
  }
  