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
return status;
		}
		IStatus val= JavaConventions.validateJavaTypeName(classToTestName);
		if (val.getSeverity() == IStatus.ERROR) {
			status.setError(Messages.getString("NewTestClassWizPage.error.class_to_test.not_valid")); 
			return status;
		}
		
		if (root != null) {
			try {		
				IType type= NewTestCaseCreationWizardPage.resolveClassNameToType(root.getJavaProject(), pack, classToTestName);
				
				if (type == null) {
					
					status.setError(Messages.getString("NewTestClassWizPage.error.class_to_test.not_exist")); 
					return status;
				} else {
					if (type.isInterface()) {
						status.setWarning(Messages.getFormattedString("NewTestClassWizPage.warning.class_to_test.is_interface",classToTestName)); 
					}
					if (pack != null && !JavaModelUtil.isVisible(type, pack)) {
						status.setWarning(Messages.getFormattedString("NewTestClassWizPage.warning.class_to_test.not_visible", new String[] {(type.isInterface())?Messages.getString("Interface"):Messages.getString("Class") , classToTestName})); 
					}
				}
				fClassToTest= type;
			} catch (JavaModelException e) {
				status.setError(Messages.getString("NewTestClassWizPage.error.class_to_test.not_valid")); 
			}							
		} else {
			status.setError("");