actionPerform() NullPointerException

[Bernd Schatz]

I got a NullPointerException whenever i execute actionPerform()

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servletunit.struts.ExceptionDuringTestError: A NullPointerException was thrown. 
This may indicate an error in your ActionForm, or it may indicate that the Struts ActionServlet was unable to find struts config file. 
TestCase is running from /home/user/workspace/APP directory. 
Context directory is /home/user/workspace/APP. 
struts config file must be found under the context directory, the directory the test case is running from, or in the classpath.
at servletunit.struts.MockStrutsTestCase.actionPerform(MockStrutsTestCase.java:407)
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The ContextDirectory and config files seems to be fine,
if  i use wrong paths i got other errors.

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setContextDirectory(new File("/home/user/workspace/APP"));
setConfigFile("WEB-INF/struts-config.xml");
setServletConfigFile("WEB-INF/web.xml");
*********

I have found many of this error reports on google, but no solutions.
any ideas ?

[Patrick]

You shouldn't have to use setServletConfigFile("WEB-INF/web.xml");
So try removing it.

setContextDirectory should find the web.xml on it's own e.g. it takes the Dir specified by setContextDirectory and looks for web.xml at WEB-INF/web.xml
So is /home/user/workspace/APP/WEB-INF/web.xml a valid location?

[Bernd Schatz]

Hi,

If i change it to  setServletConfigFile("WEB-INF/web2.xml");

i got this error:

junit.framework.AssertionFailedError: Invalid pathname: WEB-INF/web2.xml
at servletunit.struts.MockStrutsTestCase.setServletConfigFile(MockStrutsTestCase.java:602)

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So i  think the path with "WEB-INF/web.xml" is valid.

If i remove setServletConfigFile("WEB-INF/web.xml");

I got the same error as described:

servletunit.struts.ExceptionDuringTestError: A NullPointerException was thrown.  This may indicate an error in your ActionForm, or it may indicate that the Struts ActionServlet was unable to find struts config file.  TestCase is running from /home/bschatz/workspace/UMA directory.  Context directory is /home/bschatz/workspace/UMA.  struts config file must be found under the context directory, the directory the test case is running from, or in the classpath.
at servletunit.struts.MockStrutsTestCase.actionPerform(MockStrutsTestCase.java:407)

---

Root Cause:

java.lang.NullPointerException
at servletunit.struts.MockStrutsTestCase.getActionServlet(MockStrutsTestCase.java:331)
at servletunit.struts.MockStrutsTestCase.actionPerform(MockStrutsTestCase.java:394)

[Patrick]

Can you check to see if getActionServlet(); is returning null?

e.g. In your test case before calling actionPerform(); call assertNotNull(getActionServlet());

Is your Action class in your classpath when running the test?

Perhaps if I could see your struts-config.xml and testCase (along with anything in the setUp method) I would have better insight.

[Mohammed Nabih]

I have this problem , getActionServlet() returns null , actionPerform() and tearDown() throw null pointer exception because of this null object