fix memory leak caused by leftbehind $invalidWidgets references

- ng:switch should not clean up $invalidWidgets
- $invalidWidgets should be clean up after each eval
- add missing docs

1 files changed, 9 insertions, 4 deletions

diff --git a/test/servicesSpec.js b/test/servicesSpec.js
index 04aebce7..c0101098 100644
--- a/test/servicesSpec.js
+++ b/test/servicesSpec.js
@@ -150,22 +150,27 @@ describe("service", function(){
 
   describe("$invalidWidgets", function(){
     it("should count number of invalid widgets", function(){
-      var scope = compile('<input name="price" ng:required ng:validate="number"></input>').$init();
+      var scope = compile('<input name="price" ng:required ng:validate="number"></input>');
+      jqLite(document.body).append(scope.$element);
+      scope.$init();
       expect(scope.$invalidWidgets.length).toEqual(1);
+
       scope.price = 123;
       scope.$eval();
       expect(scope.$invalidWidgets.length).toEqual(0);
+
       scope.$element.remove();
       scope.price = 'abc';
       scope.$eval();
-      expect(scope.$invalidWidgets.length).toEqual(1);
+      expect(scope.$invalidWidgets.length).toEqual(0);
 
       jqLite(document.body).append(scope.$element);
-      scope.$invalidWidgets.clearOrphans();
+      scope.price = 'abcd'; //force revalidation, maybe this should be done automatically?
+      scope.$eval();
       expect(scope.$invalidWidgets.length).toEqual(1);
 
       jqLite(document.body).html('');
-      scope.$invalidWidgets.clearOrphans();
+      scope.$eval();
       expect(scope.$invalidWidgets.length).toEqual(0);
     });
   });