Bug 11689 NPE creating a test case in empty workbench
If you create a project and then a JUnit TestCase when there are no other classes in the image you will get a NullPointerException when you select the browse button on the Test Class entry. STEPS 1) Create a ConfigurableProject 2) Create a JUnit Test class. In the creation dialog select the 3rd browse button. Walkback: java.lang.NullPointerException at org.eclipse.jdt.junit.wizards.NewTestCaseCreationWizardPage.chooseClassToTestTyp e(NewTestCaseCreationWizardPage.java:318) at org.eclipse.jdt.junit.wizards.NewTestCaseCreationWizardPage.classToTestButtonPre ssed(NewTestCaseCreationWizardPage.java:293) at org.eclipse.jdt.junit.wizards.NewTestCaseCreationWizardPage.access$0 (NewTestCaseCreationWizardPage.java:292) at org.eclipse.jdt.junit.wizards.NewTestCaseCreationWizardPage$3.widgetSelected (NewTestCaseCreationWizardPage.java:279) at org.eclipse.swt.widgets.TypedListener.handleEvent (TypedListener.java:85) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java (Compiled Code)) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java(Compiled Code)) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java (Compiled Code)) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java (Compiled Code)) at org.eclipse.jface.window.Window.runEventLoop(Window.java(Compiled Code)) at org.eclipse.jface.window.Window.open(Window.java:525) at org.eclipse.ui.actions.NewWizardAction.run(NewWizardAction.java:74) at org.eclipse.jface.action.Action.runWithEvent(Action.java:473) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection (ActionContributionItem.java:407) at org.eclipse.jface.action.ActionContributionItem.handleWidgetEvent (ActionContributionItem.java:361) at org.eclipse.jface.action.ActionContributionItem.access$0 (ActionContributionItem.java:352) at org.eclipse.jface.action.ActionContributionItem$ActionListener.handleEvent (ActionContributionItem.java:47) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java (Compiled Code)) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java(Compiled Code)) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java (Compiled Code)) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java (Compiled Code)) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java (Compiled Code)) at org.eclipse.ui.internal.Workbench.run(Workbench.java:698) at org.eclipse.core.internal.boot.InternalBootLoader.run (InternalBootLoader.java:777) at org.eclipse.core.boot.BootLoader.run(BootLoader.java:319) at java.lang.reflect.Method.invoke(Native Method) at org.eclipse.core.launcher.Main.basicRun(Main.java:196) at org.eclipse.core.launcher.Main.run(Main.java:555) at org.eclipse.core.launcher.Main.main(Main.java:396)
org.eclipse.jdt.junit/src/org/eclipse/jdt/junit/wizards/NewTestCaseCreationWizardPage.java
gd.grabExcessHorizontalSpace= false;
		gd.horizontalSpan= 1;
		gd.heightHint = SWTUtil.getButtonHeigthHint(fClassToTestButton);
		gd.widthHint = SWTUtil.getButtonWidthHint(fClassToTestButton);		
		fClassToTestButton.setLayoutData(gd);
	}
	private void classToTestButtonPressed() {
		IType type= chooseClassToTestType();
		if (type != null) {
			fClassToTestText.setText(JavaModelUtil.getFullyQualifiedName(type));
			handleFieldChanged(CLASS_TO_TEST);
		}
	}
	private IType chooseClassToTestType() {
		IPackageFragmentRoot root= getPackageFragmentRoot();
		if (root == null) 
			return null;
		IJavaElement[] elements= new IJavaElement[] { root.getJavaProject() };
		IJavaSearchScope scope= SearchEngine.createJavaSearchScope(elements);
		
		IType type= null;
		try {
			SelectionDialog dialog= JavaUI.createTypeDialog(getShell(), getWizard().getContainer(), scope, IJavaElementSearchConstants.CONSIDER_CLASSES, false, null);
			dialog.setTitle(Messages.getString("NewTestClassWizPage.class_to_test.dialog.title")); 
			dialog.setMessage(Messages.getString("NewTestClassWizPage.class_to_test.dialog.message")); 
			dialog.open();
			if (dialog.getReturnCode() != SelectionDialog.OK)
				return type;
			else {
				Object[] resultArray= dialog.getResult();