add tests for two-way binding with paths

Author: yyx990803

test/unit/specs/directives/prop_spec.js

@@ -46,39 +46,44 @@ if (_.inBrowser) {
             a: 'A'
           }
         },
-        template: '<test testt="{{@test}}" bb="{{@b}}" v-ref="child"></test>',
+        template: '<test testt="{{@test}}" bb="{{@b}}" a="{{@ test.a }}" v-ref="child"></test>',
         components: {
           test: {
-            props: ['testt', 'bb'],
-            template: '{{testt.a}} {{bb}}'
+            props: ['testt', 'bb', 'a'],
+            template: '{{testt.a}} {{bb}} {{a}}'
           }
         }
       })
-      expect(el.firstChild.textContent).toBe('A B')
+      expect(el.firstChild.textContent).toBe('A B A')
       vm.test.a = 'AA'
       vm.b = 'BB'
       _.nextTick(function () {
-        expect(el.firstChild.textContent).toBe('AA BB')
+        expect(el.firstChild.textContent).toBe('AA BB AA')
         vm.test = { a: 'AAA' }
         _.nextTick(function () {
-          expect(el.firstChild.textContent).toBe('AAA BB')
+          expect(el.firstChild.textContent).toBe('AAA BB AAA')
           vm.$data = {
             b: 'BBB',
             test: {
               a: 'AAAA'
             }
           }
           _.nextTick(function () {
-            expect(el.firstChild.textContent).toBe('AAAA BBB')
+            expect(el.firstChild.textContent).toBe('AAAA BBB AAAA')
             // test two-way
             vm.$.child.bb = 'B'
             vm.$.child.testt = { a: 'A' }
             _.nextTick(function () {
-              expect(el.firstChild.textContent).toBe('A B')
+              expect(el.firstChild.textContent).toBe('A B A')
               expect(vm.test.a).toBe('A')
               expect(vm.test).toBe(vm.$.child.testt)
               expect(vm.b).toBe('B')
-              done()
+              vm.$.child.a = 'Oops'
+              _.nextTick(function () {
+                expect(el.firstChild.textContent).toBe('Oops B Oops')
+                expect(vm.test.a).toBe('Oops')
+                done()
+              })
             })
           })
         })