fix(alert): re-expose AlertController

- Re-expose `AlertController` with deprecation message

Closes #4525

Author: wesleycho

src/alert/alert.js

@@ -32,9 +32,20 @@ angular.module('ui.bootstrap.alert')
 
   .value('$alertSuppressWarning', false)
 
+  .controller('AlertController', ['$scope', '$attrs', '$controller', '$log', '$alertSuppressWarning', function($scope, $attrs, $controller, $log, $alertSuppressWarning) {
+    if (!$alertSuppressWarning) {
+      $log.warn('AlertController is now deprecated. Use UibAlertController instead.');
+    }
+
+    angular.extend(this, $controller('UibAlertController', {
+      $scope: $scope,
+      $attrs: $attrs
+    }));
+  }])
+
   .directive('alert', ['$log', '$alertSuppressWarning', function($log, $alertSuppressWarning) {
     return {
-      controller: 'UibAlertController',
+      controller: 'AlertController',
       controllerAs: 'alert',
       templateUrl: function(element, attrs) {
         return attrs.templateUrl || 'template/alert/alert.html';

src/alert/test/alert.spec.js

@@ -166,7 +166,8 @@ describe('alert deprecation', function() {
     element = $compile(element)($rootScope);
     $rootScope.$digest();
 
-    expect($log.warn.calls.count()).toBe(1);
-    expect($log.warn.calls.argsFor(0)).toEqual(['alert is now deprecated. Use uib-alert instead.']);
+    expect($log.warn.calls.count()).toBe(2);
+    expect($log.warn.calls.argsFor(0)).toEqual(['AlertController is now deprecated. Use UibAlertController instead.']);
+    expect($log.warn.calls.argsFor(1)).toEqual(['alert is now deprecated. Use uib-alert instead.']);
   }));
 });