add unit test for CPMenu user interface validation

Tests/AppKit/CPMenuValidatedUserInterfaceItemTest.j

@@ -0,0 +1,52 @@
+@implementation CPMenuValidatedUserInterfaceItemTest : OJTestCase
+{
+    CPMenu                          _menu @accessors(property=menu);
+}
+
+- (void)setUp
+{
+    [[CPApplication sharedApplication] setDelegate:[[MenuTarget alloc] init]];
+
+    _menu = [[CPMenu alloc] init];
+
+    [_menu addItem:[[CPMenuItem alloc] initWithTitle:@"implemented" action:@selector(implementedAction:) keyEquivalent:nil]];
+    [_menu addItem:[[CPMenuItem alloc] initWithTitle:@"disabled" action:@selector(disabledAction:) keyEquivalent:nil]];
+    [_menu addItem:[[CPMenuItem alloc] initWithTitle:@"unimplemented" action:@selector(unimplementedAction:) keyEquivalent:nil]];
+}
+
+- (void)testAutoenable
+{
+    // Update is what actually performs the autoenabling so we need to call it manually.
+    // It's normally called automatically just before a menu becomes visible.
+    [[self menu] update];
+
+    [self assertTrue:[[[self menu] itemWithTitle:@"implemented"] isEnabled] message:@"The implemented action should be enabled"];
+    [self assertFalse:[[[self menu] itemWithTitle:@"disabled"] isEnabled] message:@"The disbabled action should be disabled"];
+    [self assertFalse:[[[self menu] itemWithTitle:@"unimplemented"] isEnabled] message:@"The unimplemented action should be disabled"];
+}
+
+@end
+
+@implementation MenuTarget : CPObject
+{
+}
+
+- (BOOL)validateMenuItem:(CPMenuItem)theMenuItem
+{
+    if ([theMenuItem action] === @selector(disabledAction:))
+        return NO;
+
+    return YES;
+}
+
+- (@action)implementedAction:(id)theSender
+{
+
+}
+
+- (@action)disabledAction:(id)theSender
+{
+
+}
+
+@end