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Chapter 5. To Test a Route with JUnit

Abstract

This tutorial walks you through the process of using the New Camel Test Case wizard to create a test case for your route and using it test the route.

Overview
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The New Camel JUnit Test Case wizard generates a boilerplate JUnit test case. This means that when you create or modify a route (for example, adding more processors to it), you'll need to modify the generated test case to add expectations and assertions specific to the new route you've created, so the test is valid for the route.

Goals
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In this tutorial you will:
  • create a Apache Camel test case
  • run the route with the test case
  • observe the output

Prerequisites
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To complete this tutorial you will need:

Creating the test case
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To create a new test case:
  1. In Project Explorer, select src/test/java.
  2. Right-click it to open the context menu, and then select New Camel Test Case to open the New Camel JUnit Test Case wizard, as shown in Figure 5.1, “New Camel JUnit Test Case wizard”.

    Figure 5.1. New Camel JUnit Test Case wizard

    new JUnit test case wizard page one
    View larger image
    new JUnit test case wizard page one
  3. Make sure the Source folder field contains simple-route/src/test/java.
    Note
    If needed, you can click browse button to find the proper folder.
  4. The Package field defaults to tutorial.simple-route. To include the test case in a different package, enter the name of the package.
  5. In the Camel XML file under test field, enter src/main/resources/META-INF/spring/camelContext.xml, or use browse button to open a file explorer, configured to screen for XML files, to locate the file.
    Note
    The Name field defaults to CamelContextXmlTest for the name of the test file.
  6. Click Next> to open the Test Endpoints page, shown in Figure 5.2, “Test Endpoints page”.

    Figure 5.2. Test Endpoints page

    new JUnit test case wizard page two
    View larger image
    new JUnit test case wizard page two
  7. By default, all endpoints are selected and will be included in the test case. You can select or deselect all endpoints by clicking the Select All or Deselect All button, or you can select and deselect individual endpoints by clicking the check box next to each.
  8. Click Finish.
    Note
    If prompted, add JUnit to the build path.
The artifacts for the test are added to your project, and the class implementing the test case opens in the Java editor.

Running the test
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To run the test:
  1. Select the project root, simple-route, in the Project Explorer.
  2. Open the context menu.
  3. Select Run As JUnit Test.
    The JUnit view, shown in Figure 5.3, “JUnit view”, opens in the Eclipse sidebar.

    Figure 5.3. JUnit view

    JUnit view
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    JUnit view
  4. Examine the output and take action to resolve any test failures.
    Note
    You may have to run this boilerplate test twice before it runs without a failure.

Further reading
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