test(jQuery): test not firing $destroy on jQuery.cleanData with jQuery UI

So far it wasn't tested that Angular's logic for skipping it triggering
the $destroy event on jQuery.cleanData in the replaceWith internal function
works correctly when Angular is not the last one to patch the cleanData method
(e.g. if jQuery UI does the patching later). This commits adds the relevant
test.

Ref angular#8486

Author: mgol

test/ng/compileSpec.js

@@ -1553,17 +1553,47 @@ describe('$compile', function() {
         ));
 
 
-        it('should work when directive is in a repeater', inject(
-          function($compile, $httpBackend, $rootScope) {
-            $httpBackend.expect('GET', 'hello.html').
+        describe('when directive is in a repeater', function() {
+          var is;
+          beforeEach(function () {
+            is = [1, 2];
+          });
+
+          function runTest() {
+            inject(function ($compile, $httpBackend, $rootScope) {
+              $httpBackend.expect('GET', 'hello.html').
                 respond('<span>i=<span ng-transclude></span>;</span>');
-            element = jqLite('<div><b class=hello ng-repeat="i in [1,2]">{{i}}</b></div>');
-            $compile(element)($rootScope);
+              element = jqLite('<div><b class=hello ng-repeat="i in [' + is + ']">{{i}}</b></div>');
+              $compile(element)($rootScope);
 
-            $httpBackend.flush();
-            expect(element.text()).toEqual('i=1;i=2;');
+              $httpBackend.flush();
+              expect(element.text()).toEqual('i=' + is.join(';i=') + ';');
+            });
           }
-        ));
+
+          it('should work in jqLite and jQuery with jQuery.cleanData last patched by Angular', runTest);
+
+          it('should work with another library patching jQuery.cleanData after Angular', function() {
+            var cleanedCount = 0;
+            var currentCleanData = jQuery.cleanData;
+            jQuery.cleanData = function (elems) {
+              cleanedCount += elems.length;
+              // Don't return the output and expicitly pass only the first parameter
+              // so that we're sure we're not relying on either of them. jQuery UI patch
+              // behaves in this way.
+              currentCleanData(elems);
+            };
+
+            runTest();
+
+            // The initial ng-repeat div is dumped after parsing hence we expect cleanData
+            // count to be one larger than size of the iterated array.
+            expect(cleanedCount).toBe(is.length + 1);
+
+            // Restore the previous jQuery.cleanData.
+            jQuery.cleanData = currentCleanData;
+          });
+        });
 
 
         it("should fail if replacing and template doesn't have a single root element", function() {