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Subject: RE: invoking a private method of a servlet
Date: Mon, 17 Nov 2003 13:42:37 +0200
Message-ID: <2F3A41C96079844B9D3B375B1DC9535E098453@appsrvr.itworx.com>
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Thread-Topic: invoking a private method of a servlet
Thread-Index: AcOs/uVqjvYzX1JuQnq9tH1wKAeuEgAAIN/g
From: "Tarek M. Nabil" <Tarek.Nabil@itworx.com>
To: "Cactus Users List" <cactus-user@jakarta.apache.org>
X-Spam-Rating: daedalus.apache.org 1.6.2 0/1000/N

Hi Ajay,

I'm not an expert on Unit Testing, but I've been doing so much reading =
about it lately. This is, really, the first time I've seen this =
technique used. I would think this is too much work and I really doubt =
if this is the idea behind testing. I think your problem would be better =
solved by using mock objects.

Thanks,
Tarek Nabil

-----Original Message-----
From: Ajay Kumar [mailto:ajaykumar1712@hotmail.com]
Sent: Monday, November 17, 2003 1:35 PM
To: cactus-user@jakarta.apache.org
Subject: invoking a private method of a servlet


Hi All,

I have a controller servlet with many private methods and want to write =
a=20
testcase for these methods. I tried using reflection for invoking these=20
methods, but got the following report:

<testsuites>
-
<testsuite name=3D"TestMainServlet" tests=3D"2" failures=3D"0" =
errors=3D"1"=20
time=3D"1.254">
<testcase name=3D"testServletContext" time=3D"0.734"/>
-
<testcase name=3D"testGetEmailTemplates" time=3D"0.119">
-
<error message=3D"null"=20
type=3D"org.apache.cactus.client.ServletExceptionWrapper">
java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at=20
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java=
:39)
	at=20
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorI=
mpl.java:25)
	at TestMainServlet.testGetEmailTemplates(TestMainServlet.java:52)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at=20
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java=
:39)
	at=20
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorI=
mpl.java:25)
	at=20
org.apache.cactus.server.AbstractWebTestCaller.doTest(AbstractWebTestCall=
er.java:156)
	at=20
org.apache.cactus.server.AbstractWebTestController.handleRequest_aroundBo=
dy0(AbstractWebTestController.java:130)
	at=20
org.apache.cactus.server.AbstractWebTestController.handleRequest_aroundBo=
dy1$advice(AbstractWebTestController.java:158)
	at=20
org.apache.cactus.server.AbstractWebTestController.handleRequest(Abstract=
WebTestController.java)
	at=20
org.apache.cactus.server.ServletTestRedirector.doPost_aroundBody2(Servlet=
TestRedirector.java:138)
	at=20
org.apache.cactus.server.ServletTestRedirector.doPost_aroundBody3$advice(=
ServletTestRedirector.java:158)
	at=20
org.apache.cactus.server.ServletTestRedirector.doPost(ServletTestRedirect=
or.java)
	at=20
org.apache.cactus.server.ServletTestRedirector.doGet_aroundBody0(ServletT=
estRedirector.java:109)
	at=20
org.apache.cactus.server.ServletTestRedirector.doGet_aroundBody1$advice(S=
ervletTestRedirector.java:158)
	at=20
org.apache.cactus.server.ServletTestRedirector.doGet(ServletTestRedirecto=
r.java)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at=20
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applicat=
ionFilterChain.java:247)
	at=20
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilte=
rChain.java:193)
	at=20
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve=
.java:256)
	at=20
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.in=
vokeNext(StandardPipeline.java:643)
	at=20
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:48=
0)
	at =
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
	at=20
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve=
.java:191)
	at=20
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.in=
vokeNext(StandardPipeline.java:643)
	at=20
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:48=
0)
	at =
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
	at=20
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2417=
)
	at=20
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:=
180)
	at=20
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.in=
vokeNext(StandardPipeline.java:643)
	at=20
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherVal=
ve.java:171)
	at=20
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.in=
vokeNext(StandardPipeline.java:641)
	at=20
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:=
172)
	at=20
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.in=
vokeNext(StandardPipeline.java:641)
	at=20
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:48=
0)
	at =
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
	at=20
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.j=
ava:174)
	at=20
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.in=
vokeNext(StandardPipeline.java:643)
	at=20
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:48=
0)
	at =
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
	at =
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:193)
	at=20
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:781=
)
	at=20
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processCo=
nnection(Http11Protocol.java:549)
	at org.a
pache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:589)
	at=20
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.=
java:666)
	at java.lang.Thread.run(Thread.java:536)
Caused by: java.lang.NullPointerException
	at=20
com.appnetix.mainprospecting.control.MainServlet.getEmailTemplates(MainSe=
rvlet.java:226)
	... 54 more
</error>
</testcase>
</testsuite>
</testsuites

Is there any approach to solve this problem?

Thanks,
Ajay.

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