don't use NSSelectorFromString - Apple seems to be rejecting apps that use it, even legitimately

Author: Igor Makarov

Sources/UIViewController+AnyPromise.m

@@ -56,7 +56,7 @@ - (AnyPromise *)promiseViewController:(UIViewController *)vc animated:(BOOL)anim
     }
 
     if (!promise) {
-        if (![vc respondsToSelector:NSSelectorFromString(@"promise")]) {
+        if (![vc respondsToSelector:@selector(promise)]) {
             id userInfo = @{NSLocalizedDescriptionKey: @"ViewController is not promisable"};
             id err = [NSError errorWithDomain:PMKErrorDomain code:PMKInvalidUsageError userInfo:userInfo];
             return [AnyPromise promiseWithValue:err];

Tests/TestUIViewController.swift

@@ -93,7 +93,7 @@ private class MockViewController: UIViewController, Promisable {
 
     var appeared = false
 
-    private override func viewDidAppear(_ animated: Bool) {
+    fileprivate override func viewDidAppear(_ animated: Bool) {
         appeared = true
     }
 }