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POUnit Testing gwt-dispatch
 

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    <p>I'm trying to write some unit tests for a gwt-dispatch service with JUnit. I'm getting the following error when stepping through the test with my debugger:</p> <blockquote> <p>Error in custom provider, com.google.inject.OutOfScopeException: Cannot access scoped object. Either we are not currently inside an HTTP Servlet request, or you may have forgotten to apply com.google.inject.servlet.GuiceFilter as a servlet filter for this request.</p> </blockquote> <p>I'm going to simplify the code a bit here -- hopefully I'm not stripping out anything necessary.</p> <pre><code>import junit.framework.TestCase; import net.customware.gwt.dispatch.client.standard.StandardDispatchService; import com.google.inject.Guice; import com.google.inject.Injector; import com.google.inject.servlet.ServletModule; ... public class LoggedInServiceTest extends TestCase { Injector i; StandardDispatchService service; protected com.google.inject.Injector getInjector() { return Guice.createInjector(new ServletModule(), new TestServletModule(), new ActionsHandlerModule(), new TestDispatchModule(), new OpenIdGuiceModule()); } public void setUp() throws Exception { i = getInjector(); service = i.getInstance(StandardDispatchService.class); } public void testNotLoggedIn() { try { GetProjectsResult result = (GetProjectsResult) service.execute(new GetProjectsAction()); result.getSizeOfResult(); } catch (Exception e) { fail(); } } } </code></pre> <p>The service request is indeed supposed to be going through a GuiceFilter, and it looks like that filter is not being set.</p> <p>Any ideas on what other setup needs to be done to register the filter?</p>
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    1. COSome stylistic suggestions in your test. 1. setUp should be protected and call `super.setUp()` before doing anything (`TestCase.setUp()` does nothing, but if you change the base class, you could have problems). 2. Instead of catching Exception in your test and calling `fail()`, change your test method to declare that it throws `Exception`. If a test throws an exception, it automatically fails.
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    2. COThanks. The test is actually supposed to verify that the proper exception is thrown -- but you're right that the simplified code I posted isn't exactly pretty.
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