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.mustache;
  
  import org.apache.camel.EndpointInject;
  import org.apache.camel.Exchange;
  import org.apache.camel.Produce;
  import org.apache.camel.ProducerTemplate;
  import org.apache.camel.builder.RouteBuilder;
  import org.apache.camel.component.mock.MockEndpoint;
  import org.apache.camel.test.junit5.CamelTestSupport;
  import org.apache.camel.util.StopWatch;
  import org.junit.jupiter.api.Test;
  import org.slf4j.LoggerFactory;
  
  /**
   * Unit test for {@link MustacheComponent} and {@link MustacheEndpoint}
   */
  public class MustacheComponentTest extends CamelTestSupport {
  
      @EndpointInject("mock:endSimple")
      protected MockEndpoint endSimpleMock;
  
      @Produce("direct:startSimple")
      protected ProducerTemplate startSimpleProducerTemplate;
  
      /**
       * Main test
       */
      @Test
      public void testMustache() throws Exception {
          // Prepare
          endSimpleMock.expectedMessageCount(1);
          endSimpleMock.expectedBodiesReceived("\nMessage with body 'The Body' and some header 'Some Header'");
          // Act
          startSimpleProducerTemplate.sendBodyAndHeader("The Body", "someHeader", "Some Header");
          // Verify
          MockEndpoint.assertIsSatisfied(context);
      }
  
      /**
       * Test using code Template header
       */
      @Test
      public void testMustacheWithTemplateHeader() throws Exception {
          // Prepare
          Exchange exchange = createExchangeWithBody("The Body");
          exchange.getIn().setHeader("someHeader", "Some Header");
          exchange.getIn().setHeader(MustacheConstants.MUSTACHE_TEMPLATE, "Body='{{body}}'|SomeHeader='{{headers.someHeader}}'");
          endSimpleMock.expectedMessageCount(1);
          endSimpleMock.expectedBodiesReceived("Body='The Body'|SomeHeader='Some Header'");
          // Act
          startSimpleProducerTemplate.send(exchange);
          // Verify
          MockEndpoint.assertIsSatisfied(context);
      }
  
      /**
       * Test using Resource URI header
       */
      @Test
      public void testMustacheWithResourceUriHeader() throws Exception {
          // Prepare
          Exchange exchange = createExchangeWithBody("The Body");
          exchange.getIn().setHeader("someHeader", "Some Header");
          exchange.getIn().setHeader(MustacheConstants.MUSTACHE_RESOURCE_URI, "/another.mustache");
          endSimpleMock.expectedMessageCount(1);
          endSimpleMock.message(0).body().contains("The Body");
          endSimpleMock.message(0).body().contains("Some Header");
          // Act
          startSimpleProducerTemplate.send(exchange);
          // Verify
          MockEndpoint.assertIsSatisfied(context);
      }
  
      @Test
      public void testMustacheWithInheritance() throws Exception {
          // Prepare
          Exchange exchange = createExchangeWithBody("The Body");
          exchange.getIn().setHeader(MustacheConstants.MUSTACHE_RESOURCE_URI, "/child.mustache");
          endSimpleMock.expectedMessageCount(1);
          endSimpleMock.message(0).body().contains("Content 1: Child 1");
          endSimpleMock.message(0).body().contains("Middle");
          endSimpleMock.message(0).body().contains("Content 2: Child 2");
          // Act
          startSimpleProducerTemplate.send(exchange);
          // Verify
          MockEndpoint.assertIsSatisfied(context);
      }
  
      @Test
      public void testMustacheWithPartials() throws Exception {
          // Prepare
          Exchange exchange = createExchangeWithBody("The Body");
          exchange.getIn().setHeader(MustacheConstants.MUSTACHE_RESOURCE_URI, "/includer.mustache");
          endSimpleMock.expectedMessageCount(1);
          endSimpleMock.message(0).body().contains("Start");
          endSimpleMock.message(0).body().contains("Included");
          endSimpleMock.message(0).body().contains("End");
          // Act
          startSimpleProducerTemplate.send(exchange);
          // Verify
          MockEndpoint.assertIsSatisfied(context);
      }
  
      /**
       * Main test
       */
      @Test
      public void testMustachePerformance() throws Exception {
          int messageCount = 10000;
          endSimpleMock.expectedMessageCount(messageCount);
          StopWatch stopwatch = new StopWatch(true);
          for (int i = 0; i < messageCount; i++) {
              startSimpleProducerTemplate.sendBodyAndHeader("The Body", "someHeader", "Some Header");
          }
          MockEndpoint.assertIsSatisfied(context);
          LoggerFactory.getLogger(getClass())
                  .info("Mustache performance: " + stopwatch.taken() + "ms for " + messageCount + " messages");
      }
  
      @Override
      protected RouteBuilder createRouteBuilder() {
          return new RouteBuilder() {
              @Override
              public void configure() {
                  MustacheComponent mc = context.getComponent("mustache", MustacheComponent.class);
                  mc.setAllowTemplateFromHeader(true);
  
                  from("direct:startSimple")
                          .to("mustache://simple.mustache")
                          .to("mock:endSimple");
              }
          };
      }
  }
  