Re: NPE in verifyPdfText

Dierk König <[email protected]>
Newsgroups gmane.comp.web.canoo.webtest
Message-ID <[email protected]> 
Hi Lisa,

always good to hear from you ;-)

The issue appears to be connected to the Acrobat version that created the PDF, see
http://markmail.org/message/64ls3daphdh3pxzo

cheers
Dierk

Am 02.12.2010 um 22:09 schrieb Lisa Crispin:

> We got a new version of a pdf that we've had for years and years, a page was added to it is all. Now all our tests  that verify this document are failing with an NPE. The traceback is below. There must be something wrong with the PDF, but we can't see it. Anyone have any suggestions how we can debug this? I can see the PDF and the actual page in question in the test result output, and it has the right text on it and everything.
> 
> The step that's failing is:
>   <pdfVerifyText description="verify first page content"
>     startPage="1"
>     endPage="1"
>     text="SUMMARY PLAN DESCRIPTION"/>   
> 
> Here is the traceback:
> /var/hudson/workspace/WebTest-NonTradeTests-Build/trunk/src/web_test/modules/verifySPD40.xml:8: Unexpected exception caught: java.lang.NullPointerException
>     at com.canoo.webtest.steps.StepUtil.handleException(StepUtil.java:120)
>     at com.canoo.webtest.steps.Step.handleException(Step.java:387)
>     at com.canoo.webtest.steps.Step.execute(Step.java:118)
>     at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
>     at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>     at java.lang.reflect.Method.invoke(Method.java:597)
>     at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
>     at org.apache.tools.ant.Task.perform(Task.java:348)
>     at com.canoo.webtest.ant.TestStepSequence.executeSteps(TestStepSequence.java:43)
>     at com.canoo.webtest.ant.TestStepSequence.doExecute(TestStepSequence.java:31)
>     at com.canoo.webtest.steps.Step.execute(Step.java:103)
>     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:597)
>     at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
>     at org.apache.tools.ant.Task.perform(Task.java:348)
>     at com.canoo.webtest.ant.WebtestTask.executeSteps(WebtestTask.java:236)
>     at com.canoo.webtest.ant.WebtestTask.execute(WebtestTask.java:208)
>     at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
>     at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>     at java.lang.reflect.Method.invoke(Method.java:597)
>     at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
>     at org.apache.tools.ant.Task.perform(Task.java:348)
>     at org.apache.tools.ant.Target.execute(Target.java:357)
>     at org.apache.tools.ant.Target.performTasks(Target.java:385)
>     at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
>     at org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:38)
>     at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
>     at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:416)
>     at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
>     at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>     at java.lang.reflect.Method.invoke(Method.java:597)
>     at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
>     at org.apache.tools.ant.Task.perform(Task.java:348)
>     at org.apache.tools.ant.Target.execute(Target.java:357)
>     at org.apache.tools.ant.Target.performTasks(Target.java:385)
>     at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
>     at org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:38)
>     at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
>     at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:416)
>     at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
>     at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>     at java.lang.reflect.Method.invoke(Method.java:597)
>     at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
>     at org.apache.tools.ant.Task.perform(Task.java:348)
>     at org.apache.tools.ant.Target.execute(Target.java:357)
>     at org.apache.tools.ant.Target.performTasks(Target.java:385)
>     at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
>     at org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:38)
>     at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
>     at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:416)
>     at org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:105)
>     at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
>     at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>     at java.lang.reflect.Method.invoke(Method.java:597)
>     at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
>     at org.apache.tools.ant.Task.perform(Task.java:348)
>     at org.apache.tools.ant.Target.execute(Target.java:357)
>     at org.apache.tools.ant.Target.performTasks(Target.java:385)
>     at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
>     at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
>     at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
>     at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
>     at org.apache.tools.ant.Main.runBuild(Main.java:698)
>     at org.apache.tools.ant.Main.startAnt(Main.java:199)
>     at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
>     at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)
> Caused by: java.lang.NullPointerException
>     at org.pdfbox.pdmodel.PDPageNode.getAllKids(PDPageNode.java:194)
>     at org.pdfbox.pdmodel.PDPageNode.getAllKids(PDPageNode.java:182)
>     at org.pdfbox.pdmodel.PDDocumentCatalog.getAllPages(PDDocumentCatalog.java:226)
>     at org.pdfbox.util.PDFTextStripper.writeText(PDFTextStripper.java:216)
>     at org.pdfbox.util.PDFTextStripper.getText(PDFTextStripper.java:149)
>     at com.canoo.webtest.plugins.pdftest.htmlunit.pdfbox.PdfBoxPDFPage.getTextInternal(PdfBoxPDFPage.java:204)
>     at com.canoo.webtest.plugins.pdftest.htmlunit.pdfbox.PdfBoxPDFPage.getText(PdfBoxPDFPage.java:196)
>     at com.canoo.webtest.plugins.pdftest.PdfVerifyTextStep.verifyPdf(PdfVerifyTextStep.java:87)
>     at com.canoo.webtest.plugins.pdftest.AbstractVerifyPdfStep.doExecute(AbstractVerifyPdfStep.java:22)
>     at com.canoo.webtest.steps.Step.execute(Step.java:103)
>     ... 70 more
> --- Nested Exception ---
> java.lang.NullPointerException
>     at org.pdfbox.pdmodel.PDPageNode.getAllKids(PDPageNode.java:194)
>     at org.pdfbox.pdmodel.PDPageNode.getAllKids(PDPageNode.java:182)
>     at org.pdfbox.pdmodel.PDDocumentCatalog.getAllPages(PDDocumentCatalog.java:226)
>     at org.pdfbox.util.PDFTextStripper.writeText(PDFTextStripper.java:216)
>     at org.pdfbox.util.PDFTextStripper.getText(PDFTextStripper.java:149)
>     at com.canoo.webtest.plugins.pdftest.htmlunit.pdfbox.PdfBoxPDFPage.getTextInternal(PdfBoxPDFPage.java:204)
>     at com.canoo.webtest.plugins.pdftest.htmlunit.pdfbox.PdfBoxPDFPage.getText(PdfBoxPDFPage.java:196)
>     at com.canoo.webtest.plugins.pdftest.PdfVerifyTextStep.verifyPdf(PdfVerifyTextStep.java:87)
>     at com.canoo.webtest.plugins.pdftest.AbstractVerifyPdfStep.doExecute(AbstractVerifyPdfStep.java:22)
>     at com.canoo.webtest.steps.Step.execute(Step.java:103)
>     at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
>     at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>     at java.lang.reflect.Method.invoke(Method.java:597)
>     at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
>     at org.apache.tools.ant.Task.perform(Task.java:348)
>     at com.canoo.webtest.ant.TestStepSequence.executeSteps(TestStepSequence.java:43)
>     at com.canoo.webtest.ant.TestStepSequence.doExecute(TestStepSequence.java:31)
>     at com.canoo.webtest.steps.Step.execute(Step.java:103)
>     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:597)
>     at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
>     at org.apache.tools.ant.Task.perform(Task.java:348)
>     at com.canoo.webtest.ant.WebtestTask.executeSteps(WebtestTask.java:236)
>     at com.canoo.webtest.ant.WebtestTask.execute(WebtestTask.java:208)
>     at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
>     at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>     at java.lang.reflect.Method.invoke(Method.java:597)
>     at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
>     at org.apache.tools.ant.Task.perform(Task.java:348)
>     at org.apache.tools.ant.Target.execute(Target.java:357)
>     at org.apache.tools.ant.Target.performTasks(Target.java:385)
>     at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
>     at org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:38)
>     at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
>     at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:416)
>     at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
>     at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>     at java.lang.reflect.Method.invoke(Method.java:597)
>     at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
>     at org.apache.tools.ant.Task.perform(Task.java:348)
>     at org.apache.tools.ant.Target.execute(Target.java:357)
>     at org.apache.tools.ant.Target.performTasks(Target.java:385)
>     at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
>     at org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:38)
>     at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
>     at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:416)
>     at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
>     at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>     at java.lang.reflect.Method.invoke(Method.java:597)
>     at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
>     at org.apache.tools.ant.Task.perform(Task.java:348)
>     at org.apache.tools.ant.Target.execute(Target.java:357)
>     at org.apache.tools.ant.Target.performTasks(Target.java:385)
>     at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
>     at org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:38)
>     at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
>     at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:416)
>     at org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:105)
>     at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
>     at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>     at java.lang.reflect.Method.invoke(Method.java:597)
>     at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
>     at org.apache.tools.ant.Task.perform(Task.java:348)
>     at org.apache.tools.ant.Target.execute(Target.java:357)
>     at org.apache.tools.ant.Target.performTasks(Target.java:385)
>     at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
>     at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
>     at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
>     at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
>     at org.apache.tools.ant.Main.runBuild(Main.java:698)
>     at org.apache.tools.ant.Main.startAnt(Main.java:199)
>     at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
>     at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)
> 
> -- 
> Lisa Crispin
> Co-author with Janet Gregory, _Agile Testing: A Practical Guide for Testers and Agile Teams_ (Addison-Wesley 2009)
> Contributor to _Beautiful Testing_ (O'Reilly 2009)
> http://lisacrispin.com
> @lisacrispin on Twitter
>
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