Bug 25014 JUnit TestCase Wizard accepts empty string as test case name[junit]
Version: 2.0 Build id: 200210161553 The JUnit TestCase wizard accepts empty string as the test case name when there is no Java class currently selected. Steps for reproducing the error: 1 - Ensure there is no class currently selected in the Package Explorer (e.g. select a package or project); 2 - Activate New JUnit TestCase wizard; 3 - There will be no test case name selected. The "Finish" button will be disabled. Then erase the "Superclass" field content. The "Finish" button will be enabled. This opens a dialog with a message "Creation of element failed. Reason: Invalid name specified: .java" and a new entry is added to the error log. The stack trace will be attached.
org.eclipse.jdt.junit/src/org/eclipse/jdt/internal/junit/wizards/NewTestCaseCreationWizardPage.java
if (cu != null) 
					classToTest= cu.findPrimaryType();
				else {
					if (element instanceof IClassFile) {
						try {
							IClassFile cf= (IClassFile) element;
							if (cf.isStructureKnown())
								classToTest= cf.getType();
						} catch(JavaModelException e) {
							JUnitPlugin.log(e);
						}
					}					
				}
			}
			if (classToTest != null) {
				try {
					if (!TestSearchEngine.isTestImplementor(classToTest)) {
						fDefaultClassToTest= classToTest.getFullyQualifiedName();
					}
				} catch (JavaModelException e) {
					JUnitPlugin.log(e);
				}
			}
		}
		fMethodStubsButtons.setSelection(0, false); 
		fMethodStubsButtons.setSelection(1, false); 
		fMethodStubsButtons.setEnabled(1, false); 
		fMethodStubsButtons.setSelection(2, false); 
		fMethodStubsButtons.setSelection(3, false); 
	}