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1. Add dependencies on Camel-Spring, and the Spring test JAR (which will automatically bring in JUnit 3.8.x) to your POM:

   Code Block
   xml xml
   <dependency> <artifactId>camel-spring</artifactId> <groupId>org.apache.camel</groupId> <version>1.4.0</version> </dependency> <dependency> <artifactId>spring-test</artifactId> <groupId>org.springframework</groupId> <version>2.5.5</version> <scope>test</scope> </dependency>

2. Create a new unit test class in src/test/java/your-package-here, perhaps called XMLInputTest.java
3. Make the test extend Spring's AbstractJUnit38SpringContextTests class.
4. Create a Spring context configuration file in src/test/resources, perhaps called XMLInputTest-context.xml
5. In the unit test class, use the class-level @ContextConfiguration annotation to indicate that a Spring context should be loaded
   • By default, this looks for a Context configuration file called TestClassName-context.xml in a subdirectory corresponding to the package of the test class. For instance, if your test class was org.apache.camel.tutorial.XMLInputTest, it would look for org/apache/camel/tutorial/XMLInputTest-context.xml
   • To override this default, use the locations attribute on the @ContextConfiguration annotation to provide specific context file locations (starting each path with a / if you don't want it to be relative to the package directory)
6. Add a CamelContext instance variable to the test class, with the @Autowired annotation
7. Put in an empty test method just for the moment
8. Add the Spring <beans> element (including the Camel Namespace) with an empty <camelContext> element to the Spring context, like this:

   Code Block
   xml xml
   <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://activemq.apache.org/camel/schema/spring http://activemq.apache.org/camel/schema/spring/camel-spring-1.3.0.xsd"> <camelContext id="camel" xmlns="http://activemq.apache.org/camel/schema/spring"> </camelContext> </beans>

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Test it by running mvn install and make sure there are no build errors. So far it doesn't test much; just that your project and test and source files are all organized correctly.

Flesh Out the Unit Test

So now we're going to write a Camel route that applies the XSLT to the sample Customer 1 input file, and makes sure that some XML output comes out:

1. Save the input-customer1.xml file to src/test/resources
2. Save your XSLT file (created in the previous step) to src/main/resources
3. Write a Camel Route, either right in the Spring XML, or using the Java DSL (in another class under src/test/java somewhere). This route should:
   1. Start from the endpoint direct:start (which lets the test conveniently pass messages into the route)
   2. Call the endpoint xslt:YourXSLTFile.xsl to transform the message
   3. Send the result to the endpoint mock:finish (which lets the test verify the route output)
4. Add a test method to the unit test class that:
   1. Get a reference to the Mock endpoint mock:finish using code like this:

      Code Block
      java java
      MockEndpoint finish = MockEndpoint.resolve(camelContext, "mock:finish");

   2. Set the expectedMessageCount on that endpoint to 1
   3. Get a reference to the Customer 1 input file, using code like this:

      Code Block
      java java
      InputStream in = XMLInputTest.class.getResourceAsStream("/input-partner1.xml"); assertNotNull(in);

   4. Send that InputStream as a message to the direct:start endpoint, perhaps using code like this:

      Code Block
      java java
      sendMessage"direct:start", in); ... /** * Sends a message to the given endpoint URI with the body value and specified headers * * @param endpointUri the URI of the endpoint to send to * @param body the body for the message */ protected void sendMessage(String endpointUri, final Object body) { template.send(endpointUri, new Processor() { public void process(Exchange exchange) { Message in = exchange.getIn(); in.setBody(body); } }); }

   5. Ensure that the message made it through the route to the final endpoint, by testing all configured Mock endpoints like this:

      Code Block
      java java
      MockEndpoint.assertIsSatisfied(camelContext);

   6. If you like, inspect the final message body using some code like finish.getExchanges().get(0).getIn().getBody().
      • If you do this, you'll need to know what format that body is – String, byte array, InputStream, etc.
5. Run your test with mvn install and make sure the build completes successfully.

Initial Work on Customer 2 Input (CSV over HTTP)

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