Try to avoid the use of GWTTestCase.
I spend hours in it and it's very fragile and unfriendly.
Try to develop your code such that you can unit test it without GWT
like explained here:
See the links (especially the last one) in issue 6113:
http://code.google.com/p/google-web-toolkit/issues/detail?id=6113
I hope it helps
- Ed
On Oct 28, 6:50 pm, laredotornado <laredotorn...@zipmail.com> wrote:
> Hi,
>
> I'm using GWT 2.4 with JUnit 4.8.1. I want to simulate clicking on a
> button on my page. When I run the app normally, I can easily click on
> the button. Here's how I reference it in my module EntryPoint
> class ...
>
> public void onModuleLoad() {
> final com.google.gwt.dom.client.Element submitElement =
> Document.get().getElementById(SUBMIT_BUTTON_ID);
> final Button submitButton = Button.wrap(submitElement);
>
> However, when I run my GWTTestCase, the "submitElement" field above is
> null. Any ideas how I can change my test case to set this up
> correctly? Right now my test case consists of ...
>
> public class GetHtmlTest extends GWTTestCase {
>
> ...
>
> @Override
> public String getModuleName() {
> return "com.myco.clearing.productplus.Productplus_gwt";
> }
>
> public void prepareTests() {
> productPlusModule = new Productplus_gwt();
> productPlusModule.onModuleLoad();
> nameField =
> TextBox.wrap(Document.get().getElementById(Productplus_gwt.NAME_FIELD_ID));
> submitButton =
> Button.wrap(Document.get().getElementById(Productplus_gwt.SUBMIT_BUTTON_ID) );
>
> } // prepareTests
>
> @Test
> public void testSuccessEvent() {
> prepareTests();
>
> Here's the exact exception and stack trace. I have this GWT project
> set up in Eclipse Indigo, and run it by click-clicking my test case
> and select "Run As" -> "GWT Junit Test".
>
> java.lang.RuntimeException: Remote test failed at 10.40.70.197 /
> Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.19) Gecko/
> 2010031422 Firefox/3.0.19
> at com.google.gwt.junit.JUnitShell.processTestResult(JUnitShell.java:
> 1288)
> at com.google.gwt.junit.JUnitShell.runTestImpl(JUnitShell.java:1408)
> at com.google.gwt.junit.JUnitShell.runTestImpl(JUnitShell.java:1309)
> at com.google.gwt.junit.JUnitShell.runTest(JUnitShell.java:653)
> at com.google.gwt.junit.client.GWTTestCase.runTest(GWTTestCase.java:
> 441)
> at junit.framework.TestCase.runBare(TestCase.java:134)
> at junit.framework.TestResult$1.protect(TestResult.java:110)
> at junit.framework.TestResult.runProtected(TestResult.java:128)
> at junit.framework.TestResult.run(TestResult.java:113)
> at junit.framework.TestCase.run(TestCase.java:124)
> at com.google.gwt.junit.client.GWTTestCase.run(GWTTestCase.java:296)
> at junit.framework.TestSuite.runTest(TestSuite.java:232)
> at junit.framework.TestSuite.run(TestSuite.java:227)
> at
> org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:
> 83)
> at
> org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestRe
> ference.java:
> 50)
> at
> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:
> 38)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestR
> unner.java:
> 467)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestR
> unner.java:
> 683)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner
> .java:
> 390)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunne
> r.java:
> 197)
> Caused by: java.lang.AssertionError: Child cannot be null
> at com.google.gwt.dom.client.Node$.isOrHasChild$(Node.java:278)
> at com.google.gwt.user.client.ui.Button.wrap(Button.java:55)
> at
> com.myco.clearing.productplus.client.Productplus_gwt.onModuleLoad(Productpl
> us_gwt.java:
> 35)
> at
> com.myco.clearing.productplus.client.GetHtmlTest.prepareTests(GetHtmlTest.j
> ava:
> 33)
> at
> com.myco.clearing.productplus.client.GetHtmlTest.testSuccessEvent(GetHtmlTe
> st.java:
> 43)
> at
> com.myco.clearing.productplus.client.__GetHtmlTest_unitTestImpl.doRunTest(_
> _GetHtmlTest_unitTestImpl.java:
> 7)
> at junit.framework.TestCase.runTest(TestCase.java:62)
> at com.google.gwt.junit.client.GWTTestCase.runBare(GWTTestCase.java:
> 188)
> at
> com.google.gwt.junit.client.GWTTestCase.__doRunTest(GWTTestCase.java:
> 129)
> at com.google.gwt.junit.client.impl.GWTRunner.runTest(GWTRunner.java:
> 389)
> at
> com.google.gwt.junit.client.impl.GWTRunner.doRunTest(GWTRunner.java:
> 318)
> at com.google.gwt.junit.client.impl.GWTRunner.access$9(GWTRunner.java:
> 312)
> at com.google.gwt.junit.client.impl.GWTRunner
> $TestBlockListener.onSuccess(GWTRunner.java:107)
> at com.google.gwt.junit.client.impl.GWTRunner
> $InitialResponseListener.onSuccess(GWTRunner.java:63)
> at com.google.gwt.junit.client.impl.GWTRunner
> $InitialResponseListener.onSuccess(GWTRunner.java:1)
> at
> com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.onResponseReceiv
> ed(RequestCallbackAdapter.java:
> 232)
> at
> com.google.gwt.http.client.Request.fireOnResponseReceived(Request.java:
> 287)
> at com.google.gwt.http.client.RequestBuilder
> $1.onReadyStateChange(RequestBuilder.java:395)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
> 39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImp
> l.java:
> 25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:
> 103)
> at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:
> 71)
> at
> com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.jav a:
> 172)
> at
> com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingFo
> rReturn(BrowserChannelServer.java:
> 337)
> at
> com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChann
> elServer.java:
> 218)
> at
> com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:
> 136)
> at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:
> 561)
> at
> com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:
> 269)
> at
> com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.j
> ava:
> 91)
> at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
> at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:220)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
> 39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImp
> l.java:
> 25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:
> 103)
> at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:
> 71)
> at
> com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.jav a:
> 172)
> at
> com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChanne
> lServer.java:
> 292)
> at
> com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChan
> nelServer.java:
> 546)
> at
> com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java :
> 363)
> at java.lang.Thread.run(Thread.java:662)
>
> Thanks, - Dave
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