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.File;
  import java.io.FileOutputStream;
  import java.util.List;
  
  import org.apache.camel.builder.RouteBuilder;
  import org.apache.camel.component.mock.MockEndpoint;
  import org.apache.camel.test.junit5.CamelTestSupport;
  import org.junit.jupiter.api.Test;
  
  import static org.apache.camel.test.junit5.TestSupport.createDirectory;
  import static org.apache.camel.test.junit5.TestSupport.deleteDirectory;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  public class StreamGroupLinesTest extends CamelTestSupport {
  
      public static final String LS = System.lineSeparator();
  
      private FileOutputStream fos;
  
      @Override
      public void doPreSetup() throws Exception {
          deleteDirectory("target/stream");
          createDirectory("target/stream");
  
          File file = new File("target/stream/streamfile.txt");
          file.createNewFile();
  
          fos = new FileOutputStream(file);
          fos.write("A\n".getBytes());
          fos.write("B\n".getBytes());
          fos.write("C\n".getBytes());
          fos.write("D\n".getBytes());
          fos.write("E\n".getBytes());
          fos.write("F\n".getBytes());
  
          fos.close();
      }
  
      @Test
      public void testGroupLines() throws Exception {
          MockEndpoint mock = getMockEndpoint("mock:result");
          mock.expectedMessageCount(2);
          mock.setAssertPeriod(1000);
          mock.message(0).header(StreamConstants.STREAM_INDEX).isEqualTo(0);
          mock.message(0).header(StreamConstants.STREAM_COMPLETE).isEqualTo(false);
          mock.message(1).header(StreamConstants.STREAM_INDEX).isEqualTo(1);
          mock.message(1).header(StreamConstants.STREAM_COMPLETE).isEqualTo(true);
  
          MockEndpoint.assertIsSatisfied(context);
  
          List<?> list = mock.getExchanges().get(0).getIn().getBody(List.class);
          assertEquals(3, list.size());
          assertEquals("A", list.get(0));
          assertEquals("B", list.get(1));
          assertEquals("C", list.get(2));
  
          List<?> list2 = mock.getExchanges().get(1).getIn().getBody(List.class);
          assertEquals(3, list2.size());
          assertEquals("D", list2.get(0));
          assertEquals("E", list2.get(1));
          assertEquals("F", list2.get(2));
      }
  
      @Override
      protected RouteBuilder createRouteBuilder() {
          return new RouteBuilder() {
              @Override
              public void configure() {
                  from("stream:file?fileName=target/stream/streamfile.txt&groupLines=3").to("mock:result");
              }
          };
      }
  }
  