fix(filterFilter): test for pull request

fix(filterFilter): solve issue angular#10991 with null property value when using objects with filter : test

Author: ElephantRose

test/ng/filter/filterSpec.js

@@ -428,6 +428,32 @@ describe('Filter: filter', function() {
   });
 
 
+  it ('should not throw an error if property is null when comparing object', function() {
+      var items = [
+          { office:1, people: {name:'john'}},
+          { office:2, people: {name:'jane'}},
+          { office:3, people: null}
+      ];
+      var f = { };
+      expect(filter(items, f).length).toBe(3);
+      
+      f = { people:null };
+      expect(filter(items, f).length).toBe(3);
+      
+      //should throw an error in 1.3.12
+      f = { people:{ name:'john' }};
+      expect(filter(items, f).length).toBe(1);
+      
+      //should throw an error in 1.3.12
+      f = { people:{ name:'j' }};
+      expect(filter(items, f).length).toBe(2);
+      
+      //should throw an error in 1.3.12
+      f = { people:{ name: '' }};
+      expect(filter(items, f).length).toBe(2);
+      
+  });
+
   describe('should support comparator', function() {
 
     it('not consider `object === "[object Object]"` in non-strict comparison', function() {