test(ngAnimate): ensure the preparation class is added

Author: Narretz

test/ngAnimate/animationSpec.js

@@ -513,6 +513,25 @@ describe('$$animation', function() {
         expect(captureLog[1].element).toBe(child);
         expect(captureLog[2].element).toBe(grandchild);
       }));
+
+
+      they('should add the preparation class before the $prop-animation is pushed to the queue',
+        ['enter', 'leave', 'move'], function(animationType) {
+        inject(function($$animation, $rootScope, $animate) {
+          var runner = $$animation(element, animationType);
+          expect(element).toHaveClass('ng-' + animationType + '-prepare');
+        });
+      });
+
+
+      they('should remove the preparation class before the $prop-animation starts',
+        ['enter', 'leave', 'move'], function(animationType) {
+        inject(function($$animation, $rootScope, $$rAF) {
+          var runner = $$animation(element, animationType);
+          $rootScope.$digest();
+          expect(element).not.toHaveClass('ng-' + animationType + '-prepare');
+        });
+      });
     });
 
     describe("grouped", function() {

test/ngAnimate/integrationSpec.js

@@ -268,6 +268,36 @@ describe('ngAnimate integration tests', function() {
       });
     });
 
+    it('should add the preparation class for a structural animation before a parent animation is applied', function() {
+      module('ngAnimateMock');
+      inject(function($animate, $compile, $rootScope, $rootElement, $document, $$rAF) {
+        element = jqLite(
+          '<div ng-class="{parent:exp}">' +
+            '<div ng-if="exp">' +
+            '</div>' +
+          '</div>'
+        );
+
+        $rootElement.append(element);
+        jqLite($document[0].body).append($rootElement);
+
+        $compile(element)($rootScope);
+        $rootScope.exp = true;
+        $rootScope.$digest();
+
+        var outer = element;
+        var inner = element.find('div');
+
+        expect(outer).not.toHaveClass('parent');
+        expect(inner).toHaveClass('ng-enter-prepare');
+
+        $$rAF.flush();
+        expect(outer).toHaveClass('parent');
+        expect(inner).not.toHaveClass('ng-enter-prepare');
+      });
+    });
+
+
     it('should pack level elements into their own RAF flush', function() {
       module('ngAnimateMock');
       inject(function($animate, $compile, $rootScope, $rootElement, $document) {