Tapestry has a powerful tool to unit test your pages and services, but how to deal with it when your pages and services use Spring beans ?

Tapestry PageTester can be extended like the TapestryFilter to provide your own ServiceModuleDef classes.  The tapestry-spring contribution already provides the one needed to load a Spring application context. Then, loading Spring for your unit tests will be as simple as extended the existing PageTester and provide the Tapestry Spring Module Definition class.

Also, because this module definition uses the servlet application context to get the configuration files location, we will have to mock it. Let’s use Spring MockServletContext for this.

• Update your maven dependencies to add spring web mock objects

  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-test</artifactId>
    <version>${spring-version}</version>
  </dependency>

• Extend Tapestry PageTester, adapt the code below to your needs if you want to provide mock versions of your spring beans or make it more configurable

public class WookiPageTester extends PageTester
{

 private MockServletContext servletContext;

 public WookiPageTester(String appPackage, String appName, String contextPath,
 Class... moduleClasses)
 {
   super(appPackage, appName, contextPath, moduleClasses);
   Registry registry = this.getRegistry();
   // Set Tapestry registry in mock servlet context
   servletContext.setAttribute(TapestryFilter.REGISTRY_CONTEXT_NAME, registry);
 }

 public WookiPageTester(String appPackage, String appName)
 {
   super(appPackage, appName);
 }

 @Override
 protected ModuleDef[] provideExtraModuleDefs()
 {
   // Set spring configuration files location
   servletContext = new MockServletContext();
   servletContext.addInitParameter("contextConfigLocation", "classpath*:mock-applicationContext.xml");
   return new ModuleDef[] { new SpringModuleDef(servletContext) };
 }

}

Thanks for reading !