I'm happy to announce the release of my new tool called IBAnalyzer. Its aim is to allow you to catch common xib and storyboard-related issues without running an app or writing unit tests.
With IBAnalyzer, you're currently able to:
Find unimplemented outlets & actions in classes. Avoid crashes caused by exceptions, like a dreadful:
*** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: ' [<Sample.TwitterViewController 0x7fa84630a370> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key twitterImageView.'
@IBActions defined in code but not connected to from nibs. No more:
All that thanks to its output, an example of which you can see below:
$ ./ibanalyzer ~/code/Sample/ TwitterViewController doesn't implement a required @IBAction named: loginButtonPressed: TwitterViewController doesn't implement a required @IBOutlet named: twitterImageView LoginViewController contains unused @IBAction named: onePasswordButtonTapped: MessageCell contains unused @IBOutlet named: unreadIndicatorView MessagesViewController contains unused @IBAction named: infoButtonPressed
IBAnalyzer is in an early stage of life but I hope it will continue to get new types of warnings and become a useful tool for developers relying on Interface Builder. You should give it a go. Its source is available on GitHub.