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.language.groovy;
  
  import org.apache.camel.Exchange;
  import org.apache.camel.impl.DefaultCamelContext;
  import org.apache.camel.support.DefaultExchange;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import static org.apache.camel.test.junit5.TestSupport.assertExpression;
  import static org.apache.camel.test.junit5.TestSupport.assertInMessageHeader;
  import static org.apache.camel.test.junit5.TestSupport.assertPredicate;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.junit.jupiter.api.Assertions.fail;
  
  public class GroovyExpressionTest {
      private static final Logger LOG = LoggerFactory.getLogger(GroovyExpressionTest.class);
  
      protected Exchange exchange;
  
      @Test
      public void testExpressionReturnsTheCorrectValue() {
          assertExpression(GroovyLanguage.groovy("exchange.in.headers['foo.bar']"), exchange, "cheese");
          assertExpression(GroovyLanguage.groovy("exchange.in.headers.name"), exchange, "James");
          assertExpression(GroovyLanguage.groovy("exchange.in.headers['doesNotExist']"), exchange, null);
  
          assertExpression(GroovyLanguage.groovy("header['foo.bar']"), exchange, "cheese");
          assertExpression(GroovyLanguage.groovy("header.name"), exchange, "James");
          assertExpression(GroovyLanguage.groovy("header['doesNotExist']"), exchange, null);
  
          assertExpression(GroovyLanguage.groovy("variable['cheese']"), exchange, "gauda");
          assertExpression(GroovyLanguage.groovy("variable.cheese"), exchange, "gauda");
          assertExpression(GroovyLanguage.groovy("variable['doesNotExist']"), exchange, null);
          assertExpression(GroovyLanguage.groovy("variables['cheese']"), exchange, "gauda");
          assertExpression(GroovyLanguage.groovy("variables.cheese"), exchange, "gauda");
          assertExpression(GroovyLanguage.groovy("variables['doesNotExist']"), exchange, null);
      }
  
      @Test
      public void testPredicateEvaluation() {
          assertPredicate(GroovyLanguage.groovy("exchange.in.headers.name == 'James'"), exchange, true);
          assertPredicate(GroovyLanguage.groovy("header.name == 'James'"), exchange, true);
          assertPredicate(GroovyLanguage.groovy("exchange.in.headers.name == 'Hiram'"), exchange, false);
          assertPredicate(GroovyLanguage.groovy("header.name == 'Hiram'"), exchange, false);
  
          assertPredicate(GroovyLanguage.groovy("request.headers.name == 'James'"), exchange, true);
          assertPredicate(GroovyLanguage.groovy("header.name == 'James'"), exchange, true);
  
          assertPredicate(GroovyLanguage.groovy("variable.cheese == 'gauda'"), exchange, true);
          assertPredicate(GroovyLanguage.groovy("variables.cheese == 'gauda'"), exchange, true);
          assertPredicate(GroovyLanguage.groovy("variables['cheese'] == 'gauda'"), exchange, true);
      }
  
      @Test
      public void testVariableHeaders() {
          exchange.removeVariable("cheese");
          exchange.setVariable("header:myKey.foo", "abc");
          exchange.setVariable("header:myKey.bar", 123);
          exchange.setVariable("myOtherKey", "Hello Again");
  
          assertEquals("Hello Again", GroovyLanguage.groovy("variables['myOtherKey']").evaluate(exchange));
          assertEquals("abc", GroovyLanguage.groovy("variables['header:myKey.foo']").evaluate(exchange));
          assertEquals(123, GroovyLanguage.groovy("variables['header:myKey.bar']").evaluate(exchange));
      }
  
      @Test
      public void testException() {
          Exception e = new IllegalArgumentException("Forced");
  
          exchange.setException(e);
          assertExpression(GroovyLanguage.groovy("exception"), exchange, e);
  
          exchange.setException(null);
          assertExpression(GroovyLanguage.groovy("exception"), exchange, null);
  
          exchange.setProperty(Exchange.EXCEPTION_CAUGHT, e);
          assertExpression(GroovyLanguage.groovy("exception"), exchange, e);
      }
  
      @Test
      public void testProcessorMutatesTheExchange() {
          GroovyLanguage.groovy("request.headers.myNewHeader = 'ABC'").evaluate(exchange);
  
          assertInMessageHeader(exchange, "myNewHeader", "ABC");
      }
  
      @Test
      public void testInvalidExpressionFailsWithMeaningfulException() {
          try {
              GroovyLanguage.groovy("exchange.doesNotExist").evaluate(exchange);
              fail("This test case should have thrown an exception!");
          } catch (Exception e) {
              LOG.debug("Caught expected exception: {}", e.getMessage(), e);
              String message = e.getMessage();
              assertTrue(message.contains("doesNotExist"), "The message should include 'doesNotExist' but was: " + message);
          }
      }
  
      @BeforeEach
      public void setUp() {
          exchange = new DefaultExchange(new DefaultCamelContext());
          exchange.getIn().setHeader("foo.bar", "cheese");
          exchange.getIn().setHeader("name", "James");
          exchange.setVariable("cheese", "gauda");
      }
  }
  