libs-base/Testing/nsundomanager.m

#include <Foundation/Foundation.h>

@interface	UndoObject: NSObject
{
  int	state;
}
- (void) setState: (int)aState;
- (int) state;
@end
@implementation	UndoObject
- (void) setState: (int)aState
{
  state = aState;
}
- (int) state
{
  return state;
}
@end

int
main ()
{
  CREATE_AUTORELEASE_POOL(arp);
  NSUndoManager	*u = [NSUndoManager new];
  UndoObject	*o = [UndoObject new];
  BOOL		failed = NO;

  [u registerUndoWithTarget: o selector: @selector(setState:) object: (id)1];
  [u undo];
  if ([o state] != 1)
    {
      NSLog(@"Failed undo");
      failed = YES;
    }
  RELEASE(arp);
  if (failed == NO)
    {
      NSLog(@"Test passed");
    }
  exit (0);
}