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https://issues.apache.org/jira/browse/MYFACES-2748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Leonardo Uribe resolved MYFACES-2748.
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Assignee: Leonardo Uribe
Fix Version/s: 2.0.1
Resolution: Fixed
The problem with this issue is that IE 6 create this node hierarchy:
table -> tbody -> td ->content
but htmlunit does not (which is right). The solution proposed by Werner is
calculate how far the algorithm should go into the nodes before replace, to
prevent the problem with htmlunit or other browsers that are non w3c compliant.
Thanks to Werner for its help in solve this one.
> NPE in htmlunit when testing ajax rendering
> -------------------------------------------
>
> Key: MYFACES-2748
> URL: https://issues.apache.org/jira/browse/MYFACES-2748
> Project: MyFaces Core
> Issue Type: Bug
> Components: JSR-314
> Affects Versions: 2.0.1-SNAPSHOT
> Reporter: Michael Concini
> Assignee: Leonardo Uribe
> Fix For: 2.0.1
>
>
> When attempting to run some simple ajax tests using htmlunit, we're seeing
> some NPEs when running in the default (IE) client mode. As before with
> MYFACES-2745 this looks like its a bug in htmlunit, however these test cases
> had been passing on the MyFaces 2.0.0 release so something that is going on
> with the new javascript must be triggering the bug. I've validated in IE8,
> Firefox 3.6 and Chrome that this is being rendered properly in a live browser
> session as well as that it works if you initialize the htmlunit with new
> WebClient(BrowserVersion.FIREFOX_3).
> Here's a simple example of a failing case. Its just executes an increment
> action on a counter var and uses f:ajax to re-render an outputText field.
> <h:form id="form1" prependId="false">
> <h:outputText id="out1" value="#{incrementdecrement.value}"/>
> <br/>
> <h:commandButton id="button1" value="Count"
> action="#{incrementdecrement.increment}" >
> <f:ajax render="out1" disabled="false" />
> </h:commandButton>
> <br/>
> </h:form>
> After doing some debugging, htmlunit doesn't seem to be handling the partial
> page update. Instead of updating the span value for "out1", it is actually
> removing it from the idMap for the page. So if you try to validate the value
> of "out1" has been incremented, you'll get an NPE since the element is no
> longer on the idMap.
> WebClient webClient = new WebClient();
> HtmlPage page = (HtmlPage) webClient.getPage
> ("http://localhost:8080/JSF20AJAXTag/DisabledFalse.jsf";);
> String buttonId = "button1";
> doClick(page,buttonId);
>
> Assert.assertEquals( "1", page.getElementById
> ("out1").getTextContent());
> The NPE is coming from trying to execute getTextContent() when
> page.getElementById("out1") is returning null.
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