Bug 96926 [quick fix] Change method return type quick fix gives invalid proposal for wildcard types
Against I20050527-0010: Code: void a() { ArrayList<? extends Number> b = null; return b.get(0); } Ask for a quick fix on the compile error. Three things happen: 1) BAD: The quick fix is entitled "Change method return type to '? extends Number'". 2) GOOD: The correct return type, Number, is shown originally. 3) BAD: However, the top completion proposal, and the one chosen if the user simply hits return, is "? extends Number", which creates a compile error.
org.eclipse.jdt.ui.tests/ui/org/eclipse/jdt/ui/tests/quickfix/QuickFixTest.java
return proposals;
	}
	
	public static void assertStatusOk(IStatus status) throws CoreException {
		if (!status.isOK()) {
			if (status.getException() == null) {  
				IStatus[] children= status.getChildren();
				for (int i= 0; i < children.length; i++) {
					IStatus child= children[i];
					if (child.getException() != null) {
						throw new CoreException(child);
					}
				}
			}
		}
	}
	
	
	protected static final ArrayList collectAssists(IInvocationContext context, Class[] filteredTypes) throws CoreException {
		ArrayList proposals= new ArrayList();
		IStatus status= JavaCorrectionProcessor.collectAssists(context, new IProblemLocation[0], proposals);
		assertStatusOk(status);
		
		if (!proposals.isEmpty()) {
			assertTrue("should be marked as 'has assist'", JavaCorrectionProcessor.hasAssists(context));
		}
		
		
		if (filteredTypes != null && filteredTypes.length > 0) {
			for (Iterator iter= proposals.iterator(); iter.hasNext(); ) {