Subj : JavaScript problems with HttpUnit and JSF
To   : netscape.public.mozilla.jseng
From : Michael Borgwardt
Date : Wed Nov 24 2004 05:04 pm

Hi!

I'm currently tring to use HttpUnit for writing system tests for a JSF (java ServerFaces)
application, and failing miserably. HttpUnit uses Rhino 1.5R4.1 for executing JavaScript,
and JSF uses JavaScript for navigation.

The result is invariably the same, see below. The Javascript function looks OK to me,
and the form and elements are definitely present in the page. Is this a bug in Rhino
or in HttpUnit?



java.lang.NullPointerException
	at com.meterware.httpunit.TextFormControl$Scriptable.set(FormControl.java:793)
	at com.meterware.httpunit.javascript.JavaScript$JavaScriptEngine.put(JavaScript.java:275)
	at org.mozilla.javascript.ScriptRuntime.setProp(ScriptRuntime.java:832)
	at org.mozilla.javascript.gen.c1.call(httpunit:2)
	at org.mozilla.javascript.optimizer.OptRuntime.callSimple(OptRuntime.java:281)
	at org.mozilla.javascript.gen.c2.call(httpunit:5)
	at org.mozilla.javascript.gen.c2.exec(httpunit)
	at org.mozilla.javascript.Context.evaluateReader(Context.java:773)
	at org.mozilla.javascript.Context.evaluateString(Context.java:737)
	at 
com.meterware.httpunit.javascript.JavaScript$JavaScriptEngine.executeScript(JavaScript.java:132)
	at com.meterware.httpunit.scripting.ScriptableDelegate.runScript(ScriptableDelegate.java:65)
	at com.meterware.httpunit.parsing.ScriptFilter.getTranslatedScript(ScriptFilter.java:151)
	at com.meterware.httpunit.parsing.ScriptFilter.endElement(ScriptFilter.java:131)
	at org.cyberneko.html.filters.DefaultFilter.endElement(Unknown Source)
	at org.cyberneko.html.filters.NamespaceBinder.endElement(Unknown Source)
	at org.cyberneko.html.HTMLTagBalancer.callEndElement(Unknown Source)
	at org.cyberneko.html.HTMLTagBalancer.endElement(Unknown Source)
	at org.cyberneko.html.HTMLScanner$SpecialScanner.scan(Unknown Source)
	at org.cyberneko.html.HTMLScanner.scanDocument(Unknown Source)
	at org.cyberneko.html.HTMLConfiguration.parse(Unknown Source)
	at org.cyberneko.html.HTMLConfiguration.parse(Unknown Source)
	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
	at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
	at com.meterware.httpunit.parsing.NekoHTMLParser.parse(NekoHTMLParser.java:41)
	at com.meterware.httpunit.HTMLPage.parse(HTMLPage.java:255)
	at com.meterware.httpunit.WebResponse.getReceivedPage(WebResponse.java:1126)
	at com.meterware.httpunit.WebResponse$Scriptable.load(WebResponse.java:688)
	at com.meterware.httpunit.javascript.JavaScript.load(JavaScript.java:89)
	at 
com.meterware.httpunit.javascript.JavaScriptEngineFactory.load(JavaScriptEngineFactory.java:58)
	at com.meterware.httpunit.RequestContext.runScripts(RequestContext.java:44)
	at com.meterware.httpunit.WebWindow.getResponse(WebWindow.java:122)
	at com.meterware.httpunit.WebWindow.updateWindow(WebWindow.java:144)
	at com.meterware.httpunit.WebWindow.getSubframeResponse(WebWindow.java:130)
	at com.meterware.httpunit.WebWindow.getResponse(WebWindow.java:121)
	at com.meterware.httpunit.WebClient.getResponse(WebClient.java:113)
	at de.ovsag.cool.HttpTest.testHttpUnit(HttpTest.java:42)
	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:585)
	at junit.framework.TestCase.runTest(TestCase.java:154)
	at junit.framework.TestCase.runBare(TestCase.java:127)
	at junit.framework.TestResult$1.protect(TestResult.java:106)
	at junit.framework.TestResult.runProtected(TestResult.java:124)
	at junit.framework.TestResult.run(TestResult.java:109)
	at junit.framework.TestCase.run(TestCase.java:118)
	at junit.framework.TestSuite.runTest(TestSuite.java:208)
	at junit.framework.TestSuite.run(TestSuite.java:203)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:421)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:305)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:186)
java.lang.RuntimeException: Script 'function clear_linkDummyForm() {
   var f = document.forms['linkDummyForm'];
   f.elements['linkDummyForm:_link_hidden_'].value=null;
   f.target='';
}
clear_linkDummyForm();
//' failed: java.lang.NullPointerException
	at 
com.meterware.httpunit.javascript.JavaScript$JavaScriptEngine.handleScriptException(JavaScript.java:199)
	at 
com.meterware.httpunit.javascript.JavaScript$JavaScriptEngine.executeScript(JavaScript.java:136)
	at com.meterware.httpunit.scripting.ScriptableDelegate.runScript(ScriptableDelegate.java:65)
	at com.meterware.httpunit.parsing.ScriptFilter.getTranslatedScript(ScriptFilter.java:151)
	at com.meterware.httpunit.parsing.ScriptFilter.endElement(ScriptFilter.java:131)
	at org.cyberneko.html.filters.DefaultFilter.endElement(Unknown Source)
	at org.cyberneko.html.filters.NamespaceBinder.endElement(Unknown Source)
	at org.cyberneko.html.HTMLTagBalancer.callEndElement(Unknown Source)
	at org.cyberneko.html.HTMLTagBalancer.endElement(Unknown Source)
	at org.cyberneko.html.HTMLScanner$SpecialScanner.scan(Unknown Source)
	at org.cyberneko.html.HTMLScanner.scanDocument(Unknown Source)
	at org.cyberneko.html.HTMLConfiguration.parse(Unknown Source)
	at org.cyberneko.html.HTMLConfiguration.parse(Unknown Source)
	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
	at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
	at com.meterware.httpunit.parsing.NekoHTMLParser.parse(NekoHTMLParser.java:41)
	at com.meterware.httpunit.HTMLPage.parse(HTMLPage.java:255)
	at com.meterware.httpunit.WebResponse.getReceivedPage(WebResponse.java:1126)
	at com.meterware.httpunit.WebResponse$Scriptable.load(WebResponse.java:688)
	at com.meterware.httpunit.javascript.JavaScript.load(JavaScript.java:89)
	at 
com.meterware.httpunit.javascript.JavaScriptEngineFactory.load(JavaScriptEngineFactory.java:58)
	at com.meterware.httpunit.RequestContext.runScripts(RequestContext.java:44)
	at com.meterware.httpunit.WebWindow.getResponse(WebWindow.java:122)
	at com.meterware.httpunit.WebWindow.updateWindow(WebWindow.java:144)
	at com.meterware.httpunit.WebWindow.getSubframeResponse(WebWindow.java:130)
	at com.meterware.httpunit.WebWindow.getResponse(WebWindow.java:121)
	at com.meterware.httpunit.WebClient.getResponse(WebClient.java:113)
	at de.ovsag.cool.HttpTest.testHttpUnit(HttpTest.java:42)
	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:585)
	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 junit.framework.TestSuite.runTest(TestSuite.java:208)
	at junit.framework.TestSuite.run(TestSuite.java:203)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:421)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:305)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:186)

.