Overview

PivotalCoreKit is split along framework lines, with separate Xcode projects for the Foundation, UIKit, and CoreLocation frameworks. Each project is then separated again out into sub-sections: Core, SpecHelper, and SpecHelperStubs.

Core methods are meant to be used anywhere they're useful, whether in specs or in the primary application.
SpecHelper extends built-in classes to make testing easier and more seamless.
SpecHelperStubs stub out (and replace) a class's functionality to allow a developer to more easily inspect its state.

Here is a (hopefully exhaustive but inevitably out of date) list of PivotalCoreKit functionality, separated by framework/section:

• Foundation
  • Core
    • Convert NSString into a SHA1 hash (as NSData)
    • Convert NSData into a hexadecimal string
    • Method redirection on NSObjects (also commonly called Swizzling)
    • Convert an NSString ("Hello world I am doing great today") into camel case ("HelloWorldIAmDoingGreatToday")
    • Check if an NSString is blank
    • Check if an NSString is a valid email address
    • Percent escape encode an NSString including characters the build-in percent escaping doesn't include.
    • Map an NSArray into another NSArray by collecting items through a block
    • Convert an NSDictionary into a string of query parameters
    • NSURLConnectionDelegate based networking service (PCKHTTPConnection and PCKHTTPInterface)
    • An event-driven XML parser (PCKParser)
  • SpecHelper
    • Break out query parameters of an NSURL into an NSDictionary
    • Fake out NSURLConnection to keep it from actually accessing network and fire success/failure responses on demand
    • Return the body of an NSURLRequest as a string
    • Fake out +[NSUUID UUID] to return consistent results
    • Fake out NSOperationQueue to execute blocks on demand
• UIKit
  • Core
    • Produce a UIBarButtonItem from a UIButton
    • Load nib-based views from other nibs with bindings and layout constraints intact
    • Resize a UIImage with aspect fill or aspect fit
    • Crop a UIImage or add rounded corners
    • Translating UIViews by deltas
    • Resizing UIViews with corner pinning
    • Calculate height from NSString and NSAttributedString drawing
  • SpecHelper
    • Simulate a tap on
      • UIButton
      • UITableViewCell
      • UICollectionViewCell
      • UIBarButtonItem
      • UITabBarController item
    • Simulate a tap, swipe, or pinch on a UIView (triggers attached gesture recognizers)
    • Simulate a new value for a UISlider
    • Simulate recognition of specific gesture recognizer
    • Compare UIImages for equality
    • Query a UIWindow for the first responder
  • SpecHelperStubs
    • Query, inspect, and simulate taps on the current UIActionSheet
    • Query, inspect, and simulate taps on the current UIAlertView
    • Query, inspect, present and dismiss a UIPopoverController
    • Simulate availability states of UIImagePickerController (camera available/not available, et cetera)
    • Inspect arguments (duration, delay, options) on last UIView animation
    • Fake out UIWebView to inspect requests, simulate back/forward state, and simulate web loads
• CoreLocation
  • SpecHelper
    • Simulate Geocoding success or failure

PivotalCoreKit is test-driven and includes Specs in each project.