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java.lang.NullPointerException at org.apache.struts.util.RequestUtils.getModuleName(RequestUtils.java:1806) at org.apache.struts.util.RequestUtils.getModuleName(RequestUtils.java:1788) at org.apache.struts.util.RequestUtils.selectModule(RequestUtils.java:1768) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1481) at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525) at servletunit.struts.MockStrutsTestCase.actionPerform(MockStrutsTestCase.java:331) at examples.TestLoginAction.testFailedLogin(TestLoginAction.java:49) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at junit.framework.TestCase.runTest(TestCase.java:166) at junit.framework.TestCase.runBare(TestCase.java:140) at junit.framework.TestResult$1.protect(TestResult.java:106) at junit.framework.TestResult.runProtected(TestResult.java:124) at junit.framework.TestResult.run(TestResult.java:109) at junit.framework.TestCase.run(TestCase.java:131) at junit.framework.TestSuite.runTest(TestSuite.java:173) at junit.framework.TestSuite.run(TestSuite.java:168) at junit.textui.TestRunner.doRun(TestRunner.java:74) at junit.textui.TestRunner.run(TestRunner.java:200) at junit.textui.TestRunner.run(TestRunner.java:186) at examples.TestLoginAction.main(TestLoginAction.java:58)