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
for (int i = 0; i < methods.length; i++) {
				String elementName= methods[i].getElementName();
				StringBuffer methodName= new StringBuffer(NewTestCaseCreationWizardPage2.PREFIX+Character.toUpperCase(elementName.charAt(0))+elementName.substring(1));
				StringBuffer newMethod= new StringBuffer();
	
				if (overloadedMethods.contains(methods[i])) {
					IMethod method= methods[i];
					newMethod.append("/*\n * Test for "+Signature.toString(method.getReturnType())+" "+method.getElementName()+"("); 
					String[] paramTypes= method.getParameterTypes();
					if (paramTypes.length > 0) {
						if (paramTypes.length > 1) {
							for (int j= 0; j < paramTypes.length-1; j++) {
								newMethod.append(Signature.toString(paramTypes[j])+", "); 
							}
						}
						newMethod.append(Signature.toString(paramTypes[paramTypes.length-1]));
					}
					newMethod.append(")\n */\n"); 
					String[] params= methods[i].getParameterTypes();
					for (int j= 0; j < params.length; j++) {
						String param= params[j];
						int start= 0, end= param.length();
						
						
						if (param.startsWith( (new Character(Signature.C_ARRAY)).toString() ))
							start= 1;
						
						if (param.endsWith((new Character(Signature.C_NAME_END)).toString() ))
							end--;