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/NewTestSuiteCreationWizardPage.java
JUnitPlugin.log(e);
		}
	}
	public boolean hasUpdatedExistingClass() {
		return fUpdatedExistingClassButton;
	}
	
	private IStatus classesInSuiteChanged() {
		JUnitStatus status= new JUnitStatus();
		if (fClassesInSuiteTable.getCheckedElements().length <= 0)
			status.setWarning(Messages.getString("NewTestSuiteWizPage.classes_in_suite.error.no_testclasses_selected")); 
		return status;
	}
	
	private void updateSelectedClassesLabel() {
		int noOfClassesChecked= fClassesInSuiteTable.getCheckedElements().length;
			fSelectedClassesLabel.setText(noOfClassesChecked+((noOfClassesChecked==1)?SELECTED_CLASSES_LABEL_TEXT_ONE:SELECTED_CLASSES_LABEL_TEXT_MANY));
	}
	protected void createSuiteNameControl(Composite composite, int nColumns) {
		fSuiteNameLabel= new Label(composite, SWT.LEFT | SWT.WRAP);
		fSuiteNameLabel.setFont(composite.getFont());
		fSuiteNameLabel.setText(Messages.getString("NewTestSuiteWizPage.suiteName.text")); 
		GridData gd= new GridData();
		gd.horizontalSpan= 1;
		fSuiteNameLabel.setLayoutData(gd);
		fSuiteNameText= new Text(composite, SWT.SINGLE | SWT.BORDER);
		
		fSuiteNameText.setEnabled(true);
		fSuiteNameText.setFont(composite.getFont());
		fSuiteNameText.addModifyListener(new ModifyListener() {