Cannot set property "_mfProto" of null to "null" error with new javascript
--------------------------------------------------------------------------
Key: MYFACES-2745
URL: https://issues.apache.org/jira/browse/MYFACES-2745
Project: MyFaces Core
Issue Type: Bug
Components: JSR-314
Affects Versions: 2.0.1
Reporter: Michael Concini
The javascript changes from 5/25 have caused a regression when using htmlunit
against even the simplest JSF page as long as it loads the jsf.js script.
The exception occurs simply executing getPage() on the webClient.
WebClient webClient = new WebClient();
HtmlPage page =
webClient.getPage("http://localhost:8080/JSF20AJAXTag/DisabledFalse.jsf";);
It can be recreated by a page with nothing but this form in the body:
<h:form id="form1" prependId="false">
<h:outputText id="out1" value="This is broken"/>
<h:outputScript name="jsf.js" library="javax.faces" target="head" />
</h:form>
Attached is the exception trace from a run this morning which includes Werner's
changes from MYFACES-2742 this morning so we are up to date in our sandbox.
======= EXCEPTION START ========
EcmaError: lineNumber=[51] column=[0] lineSource=[<no source>] name=[TypeError]
sourceName=[http://localhost:8080/JSF20AJAXTag/javax.faces.resource/jsf.js.jsf?ln=javax.faces]
message=[TypeError: Cannot set property "_mfProto" of null to "null"
(http://localhost:8080/JSF20AJAXTag/javax.faces.resource/jsf.js.jsf?ln=javax.faces#51)]
com.gargoylesoftware.htmlunit.ScriptException: TypeError: Cannot set property
"_mfProto" of null to "null"
(http://localhost:8080/JSF20AJAXTag/javax.faces.resource/jsf.js.jsf?ln=javax.faces#51)
at
com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:527)
at
net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:537)
at
net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:538)
at
com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.execute(JavaScriptEngine.java:425)
at
com.gargoylesoftware.htmlunit.html.HtmlPage.loadExternalJavaScriptFile(HtmlPage.java:980)
at
com.gargoylesoftware.htmlunit.html.HtmlScript.executeScriptIfNeeded(HtmlScript.java:353)
at
com.gargoylesoftware.htmlunit.html.HtmlScript$1.execute(HtmlScript.java:215)
at
com.gargoylesoftware.htmlunit.html.HtmlScript.onAllChildrenAddedToPage(HtmlScript.java:235)
at
com.gargoylesoftware.htmlunit.html.HTMLParser$HtmlUnitDOMBuilder.endElement(HTMLParser.java:718)
at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown
Source)
at
com.gargoylesoftware.htmlunit.html.HTMLParser$HtmlUnitDOMBuilder.endElement(HTMLParser.java:676)
at
org.cyberneko.html.HTMLTagBalancer.callEndElement(HTMLTagBalancer.java:1136)
at
org.cyberneko.html.HTMLTagBalancer.endElement(HTMLTagBalancer.java:1038)
at
org.cyberneko.html.filters.DefaultFilter.endElement(DefaultFilter.java:206)
at
org.cyberneko.html.filters.NamespaceBinder.endElement(NamespaceBinder.java:329)
at
org.cyberneko.html.HTMLScanner$ContentScanner.scanEndElement(HTMLScanner.java:2999)
at
org.cyberneko.html.HTMLScanner$ContentScanner.scan(HTMLScanner.java:1991)
at org.cyberneko.html.HTMLScanner.scanDocument(HTMLScanner.java:895)
at
org.cyberneko.html.HTMLConfiguration.parse(HTMLConfiguration.java:499)
at
org.cyberneko.html.HTMLConfiguration.parse(HTMLConfiguration.java:452)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at
com.gargoylesoftware.htmlunit.html.HTMLParser$HtmlUnitDOMBuilder.parse(HTMLParser.java:896)
at
com.gargoylesoftware.htmlunit.html.HTMLParser.parse(HTMLParser.java:350)
at
com.gargoylesoftware.htmlunit.html.HTMLParser.parseHtml(HTMLParser.java:304)
at
com.gargoylesoftware.htmlunit.DefaultPageCreator.createHtmlPage(DefaultPageCreator.java:134)
at
com.gargoylesoftware.htmlunit.DefaultPageCreator.createPage(DefaultPageCreator.java:101)
at
com.gargoylesoftware.htmlunit.WebClient.loadWebResponseInto(WebClient.java:420)
at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:303)
at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:360)
at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:345)
at com.ibm.mike.TestJS.homePage(TestJS.java:19)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
at java.lang.reflect.Method.invoke(Method.java:600)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
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:118)
at
org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: net.sourceforge.htmlunit.corejs.javascript.EcmaError: TypeError:
Cannot set property "_mfProto" of null to "null"
(http://localhost:8080/JSF20AJAXTag/javax.faces.resource/jsf.js.jsf?ln=javax.faces#51)
at
net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3753)
at
net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3731)
at
net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.typeError(ScriptRuntime.java:3759)
at
net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.typeError3(ScriptRuntime.java:3785)
at
net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.undefWriteError(ScriptRuntime.java:3807)
at
net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.setObjectElem(ScriptRuntime.java:1578)
at
net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpretLoop(Interpreter.java:1450)
at
net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpret(Interpreter.java:845)
at
net.sourceforge.htmlunit.corejs.javascript.InterpretedFunction.call(InterpretedFunction.java:164)
at
net.sourceforge.htmlunit.corejs.javascript.ContextFactory.doTopCall(ContextFactory.java:429)
at
com.gargoylesoftware.htmlunit.javascript.HtmlUnitContextFactory.doTopCall(HtmlUnitContextFactory.java:264)
at
net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3157)
at
net.sourceforge.htmlunit.corejs.javascript.InterpretedFunction.exec(InterpretedFunction.java:175)
at
com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$3.doRun(JavaScriptEngine.java:416)
at
com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:521)
... 46 more
Enclosed exception:
net.sourceforge.htmlunit.corejs.javascript.EcmaError: TypeError: Cannot set
property "_mfProto" of null to "null"
(http://localhost:8080/JSF20AJAXTag/javax.faces.resource/jsf.js.jsf?ln=javax.faces#51)
at
net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3753)
at
net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3731)
at
net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.typeError(ScriptRuntime.java:3759)
at
net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.typeError3(ScriptRuntime.java:3785)
at
net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.undefWriteError(ScriptRuntime.java:3807)
at
net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.setObjectElem(ScriptRuntime.java:1578)
at
net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpretLoop(Interpreter.java:1450)
at
script(http://localhost:8080/JSF20AJAXTag/javax.faces.resource/jsf.js.jsf?ln=javax.faces:51)
at
script(http://localhost:8080/JSF20AJAXTag/javax.faces.resource/jsf.js.jsf?ln=javax.faces:48)
at
script(http://localhost:8080/JSF20AJAXTag/javax.faces.resource/jsf.js.jsf?ln=javax.faces:65)
at
net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpret(Interpreter.java:845)
at
net.sourceforge.htmlunit.corejs.javascript.InterpretedFunction.call(InterpretedFunction.java:164)
at
net.sourceforge.htmlunit.corejs.javascript.ContextFactory.doTopCall(ContextFactory.java:429)
at
com.gargoylesoftware.htmlunit.javascript.HtmlUnitContextFactory.doTopCall(HtmlUnitContextFactory.java:264)
at
net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3157)
at
net.sourceforge.htmlunit.corejs.javascript.InterpretedFunction.exec(InterpretedFunction.java:175)
at
com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$3.doRun(JavaScriptEngine.java:416)
at
com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:521)
at
net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:537)
at
net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:538)
at
com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.execute(JavaScriptEngine.java:425)
at
com.gargoylesoftware.htmlunit.html.HtmlPage.loadExternalJavaScriptFile(HtmlPage.java:980)
at
com.gargoylesoftware.htmlunit.html.HtmlScript.executeScriptIfNeeded(HtmlScript.java:353)
at
com.gargoylesoftware.htmlunit.html.HtmlScript$1.execute(HtmlScript.java:215)
at
com.gargoylesoftware.htmlunit.html.HtmlScript.onAllChildrenAddedToPage(HtmlScript.java:235)
at
com.gargoylesoftware.htmlunit.html.HTMLParser$HtmlUnitDOMBuilder.endElement(HTMLParser.java:718)
at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown
Source)
at
com.gargoylesoftware.htmlunit.html.HTMLParser$HtmlUnitDOMBuilder.endElement(HTMLParser.java:676)
at
org.cyberneko.html.HTMLTagBalancer.callEndElement(HTMLTagBalancer.java:1136)
at
org.cyberneko.html.HTMLTagBalancer.endElement(HTMLTagBalancer.java:1038)
at
org.cyberneko.html.filters.DefaultFilter.endElement(DefaultFilter.java:206)
at
org.cyberneko.html.filters.NamespaceBinder.endElement(NamespaceBinder.java:329)
at
org.cyberneko.html.HTMLScanner$ContentScanner.scanEndElement(HTMLScanner.java:2999)
at
org.cyberneko.html.HTMLScanner$ContentScanner.scan(HTMLScanner.java:1991)
at org.cyberneko.html.HTMLScanner.scanDocument(HTMLScanner.java:895)
at
org.cyberneko.html.HTMLConfiguration.parse(HTMLConfiguration.java:499)
at
org.cyberneko.html.HTMLConfiguration.parse(HTMLConfiguration.java:452)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at
com.gargoylesoftware.htmlunit.html.HTMLParser$HtmlUnitDOMBuilder.parse(HTMLParser.java:896)
at
com.gargoylesoftware.htmlunit.html.HTMLParser.parse(HTMLParser.java:350)
at
com.gargoylesoftware.htmlunit.html.HTMLParser.parseHtml(HTMLParser.java:304)
at
com.gargoylesoftware.htmlunit.DefaultPageCreator.createHtmlPage(DefaultPageCreator.java:134)
at
com.gargoylesoftware.htmlunit.DefaultPageCreator.createPage(DefaultPageCreator.java:101)
at
com.gargoylesoftware.htmlunit.WebClient.loadWebResponseInto(WebClient.java:420)
at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:303)
at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:360)
at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:345)
at com.ibm.mike.TestJS.homePage(TestJS.java:19)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
at java.lang.reflect.Method.invoke(Method.java:600)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
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:118)
at
org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
======= EXCEPTION END ========
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