fix(view): fixed hydrator to pass the right element index when attaching an event listener

modules/angular2/src/core/compiler/element_injector.js

@@ -1,4 +1,5 @@
 import {isPresent, isBlank, Type, int, BaseException} from 'angular2/src/facade/lang';
+import {EventEmitter, ObservableWrapper} from 'angular2/src/facade/async';
 import {Math} from 'angular2/src/facade/math';
 import {List, ListWrapper, MapWrapper} from 'angular2/src/facade/collection';
 import {Injector, Key, Dependency, bind, Binding, ResolvedBinding, NoBindingError,
@@ -318,6 +319,12 @@ class EventEmitterAccessor {
     this.eventName = eventName;
     this.getter = getter;
   }
+
+  subscribe(view:viewModule.AppView, boundElementIndex:number, directive:Object) {
+    var eventEmitter = this.getter(directive);
+    return ObservableWrapper.subscribe(eventEmitter,
+        eventObj => view.triggerEventHandlers(this.eventName, eventObj, boundElementIndex));
+  }
 }
 
 /**

modules/angular2/src/core/compiler/view_hydrator.js

@@ -2,7 +2,6 @@ import {Injectable, Inject, OpaqueToken, Injector} from 'angular2/di';
 import {ListWrapper, MapWrapper, Map, StringMapWrapper, List} from 'angular2/src/facade/collection';
 import * as eli from './element_injector';
 import {isPresent, isBlank, BaseException} from 'angular2/src/facade/lang';
-import {ObservableWrapper} from 'angular2/src/facade/async';
 import * as vcModule from './view_container';
 import * as viewModule from './view';
 import {BindingPropagationConfig, Locals} from 'angular2/change_detection';
@@ -160,7 +159,7 @@ export class AppViewHydrator {
       var elementInjector = view.elementInjectors[i];
       if (isPresent(elementInjector)) {
         elementInjector.instantiateDirectives(appInjector, hostElementInjector, shadowDomAppInjector, view.preBuiltObjects[i]);
-        this._setUpEventEmitters(view, elementInjector);
+        this._setUpEventEmitters(view, elementInjector, i);
 
         // The exporting of $implicit is a special case. Since multiple elements will all export
         // the different values as $implicit, directly assign $implicit bindings to the variable
@@ -190,7 +189,7 @@ export class AppViewHydrator {
     return renderComponentIndex;
   }
 
-  _setUpEventEmitters(view:viewModule.AppView, elementInjector:eli.ElementInjector) {
+  _setUpEventEmitters(view:viewModule.AppView, elementInjector:eli.ElementInjector, boundElementIndex:number) {
     var emitters = elementInjector.getEventEmitterAccessors();
     for(var directiveIndex = 0; directiveIndex < emitters.length; ++directiveIndex) {
       var directiveEmitters = emitters[directiveIndex];
@@ -198,17 +197,11 @@ export class AppViewHydrator {
 
       for (var eventIndex = 0; eventIndex < directiveEmitters.length; ++eventIndex) {
         var eventEmitterAccessor = directiveEmitters[eventIndex];
-        this._setUpSubscription(view, directive, directiveIndex, eventEmitterAccessor);
+        eventEmitterAccessor.subscribe(view, boundElementIndex, directive);
       }
     }
   }
 
-  _setUpSubscription(view:viewModule.AppView, directive:Object, directiveIndex:number, eventEmitterAccessor) {
-    var eventEmitter = eventEmitterAccessor.getter(directive);
-    ObservableWrapper.subscribe(eventEmitter,
-        eventObj => view.triggerEventHandlers(eventEmitterAccessor.eventName, eventObj, directiveIndex));
-  }
-
   /**
    * This should only be called by View or ViewContainer.
    */

modules/angular2/src/facade/collection.dart

@@ -77,7 +77,9 @@ class StringMapWrapper {
   }
   static Map merge(Map a, Map b) {
     var m = new Map.from(a);
+    if (b != null) {
       b.forEach((k, v) => m[k] = v);
+    }
     return m;
   }
   static bool isEmpty(Map m) => m.isEmpty;

modules/angular2/src/test_lib/test_lib.dart

@@ -1,7 +1,7 @@
 library test_lib.test_lib;
 
 import 'package:guinness/guinness.dart' as gns;
-export 'package:guinness/guinness.dart' hide Expect, expect, NotExpect, beforeEach, it, iit, xit, SpyObject;
+export 'package:guinness/guinness.dart' hide Expect, expect, NotExpect, beforeEach, it, iit, xit;
 import 'package:unittest/unittest.dart' hide expect;
 
 import 'dart:async';
@@ -13,6 +13,7 @@ import 'package:angular2/src/reflection/reflection_capabilities.dart';
 
 import 'package:angular2/src/di/binding.dart' show bind;
 import 'package:angular2/src/di/injector.dart' show Injector;
+import 'package:angular2/src/facade/collection.dart' show StringMapWrapper;
 
 import './test_injector.dart';
 export './test_injector.dart' show inject;
@@ -149,13 +150,40 @@ xit(name, fn) {
   _it(gns.xit, name, fn);
 }
 
-class SpyObject extends gns.SpyObject {
-  // Need to take an optional type as this is required by
-  // the JS SpyObject.
-  SpyObject([type = null]) {
+class SpyFunction extends gns.SpyFunction {
+  SpyFunction(name): super(name);
+
+  // TODO: vsavkin move to guinness
+  andReturn(value) {
+    return andCallFake(([a0, a1, a2, a3, a4, a5]) => value);
   }
 }
 
+class SpyObject extends gns.SpyObject {
+  final Map<String, SpyFunction> _spyFuncs = {};
+
+  SpyObject([arg]){}
+
+  SpyFunction spy(String funcName) =>
+    _spyFuncs.putIfAbsent(funcName, () => new SpyFunction(funcName));
+
+  static stub([object = null, config = null, overrides = null]) {
+    if (object is! SpyObject) {
+      overrides = config;
+      config = object;
+      object = new SpyObject();
+    }
+
+    var m = StringMapWrapper.merge(config, overrides);
+    StringMapWrapper.forEach(m, (value, key){
+      object.spy(key).andReturn(value);
+    });
+    return object;
+  }
+}
+
+
+
 String elementText(n) {
   hasNodes(n) {
     var children = DOM.childNodes(n);

modules/angular2/src/test_lib/test_lib.es6

@@ -1,4 +1,5 @@
 import {DOM} from 'angular2/src/dom/dom_adapter';
+import {StringMapWrapper} from 'angular2/src/facade/collection';
 
 import {bind} from 'angular2/di';
 
@@ -289,6 +290,20 @@ export class SpyObject {
     return this[name];
   }
 
+  static stub(object = null, config = null, overrides = null) {
+    if (!(object instanceof SpyObject)) {
+      overrides = config;
+      config = object;
+      object = new SpyObject();
+    }
+
+    var m = StringMapWrapper.merge(config, overrides);
+    StringMapWrapper.forEach(m, (value, key) => {
+      object.spy(key).andReturn(value);
+    });
+    return object;
+  }
+
   rttsAssert(value) {
     return true;
   }
@@ -296,6 +311,7 @@ export class SpyObject {
   _createGuinnessCompatibleSpy(){
     var newSpy = jasmine.createSpy();
     newSpy.andCallFake = newSpy.and.callFake;
+    newSpy.andReturn = newSpy.and.returnValue;
     // return null by default to satisfy our rtts asserts
     newSpy.and.returnValue(null);
     return newSpy;

modules/angular2/test/core/compiler/view_hydrator_spec.js

@@ -14,8 +14,8 @@ import {
   xit,
   SpyObject, proxy
 } from 'angular2/test_lib';
-import {IMPLEMENTS, isBlank} from 'angular2/src/facade/lang';
-import {MapWrapper, ListWrapper} from 'angular2/src/facade/collection';
+import {IMPLEMENTS, isBlank, isPresent} from 'angular2/src/facade/lang';
+import {MapWrapper, ListWrapper, StringMapWrapper} from 'angular2/src/facade/collection';
 
 import {AppProtoView, AppView} from 'angular2/src/core/compiler/view';
 import {Renderer, ViewRef} from 'angular2/src/render/api';
@@ -43,12 +43,13 @@ export function main() {
       return DirectiveBinding.createFromType(meta.type, meta.annotation);
     }
 
-    function createElementInjector() {
-      var res = new SpyElementInjector();
-      res.spy('isExportingComponent').andCallFake( () => false );
-      res.spy('isExportingElement').andCallFake( () => false );
-      res.spy('getEventEmitterAccessors').andCallFake( () => [] );
-      return res;
+    function createElementInjector(overrides) {
+      return SpyObject.stub(new SpyElementInjector(), {
+        'isExportingComponent' : false,
+        'isExportingElement' : false,
+        'getEventEmitterAccessors' : [],
+        'getComponent' : null
+      }, overrides);
     }
 
     function createEmptyElBinder() {
@@ -86,13 +87,18 @@ export function main() {
       return view;
     }
 
-    function createHostView(pv, shadowView, componentInstance) {
+    function createHostView(pv, shadowView, componentInstance, elementInjectors = null) {
       var view = new AppView(renderer, null, null, pv, MapWrapper.create());
       var changeDetector = new SpyChangeDetector();
-      var eij = createElementInjector();
-      eij.spy('getComponent').andCallFake( () => componentInstance );
-      view.init(changeDetector, [eij], [eij],
-          [null], [shadowView]);
+
+      var eis;
+      if (isPresent(elementInjectors)) {
+        eis = elementInjectors;
+      } else {
+        eis = [createElementInjector({'getComponent': componentInstance})];
+      }
+
+      view.init(changeDetector, eis, eis, ListWrapper.createFixedSize(eis.length), [shadowView]);
       return view;
     }
 
@@ -128,9 +134,7 @@ export function main() {
         var pv = createHostProtoView(null);
         var shadowView = createEmptyView();
         var view = createHostView(pv, null, null);
-        renderer.spy('createDynamicComponentView').andCallFake( (a,b,c) => {
-          return [new ViewRef(), new ViewRef()];
-        });
+        renderer.spy('createDynamicComponentView').andReturn([new ViewRef(), new ViewRef()]);
         hydrator.hydrateDynamicComponentView(view, 0, shadowView, createDirectiveBinding(SomeComponent), null);
         expect(
           () => hydrator.hydrateDynamicComponentView(view, 0, shadowView, null, null)
@@ -143,7 +147,7 @@ export function main() {
 
       it('should hydrate existing child components', () => {
         var hostPv = createHostProtoView(createProtoView());
-        var componentInstance = {};
+        var componentInstance = new Object();
         var shadowView = createEmptyView();
         var hostView = createHostView(hostPv, shadowView, componentInstance);
         renderer.spy('createInPlaceHostView').andCallFake( (a,b,c) => {
@@ -155,6 +159,35 @@ export function main() {
         expect(shadowView.hydrated()).toBe(true);
       });
 
+      it("should set up event listeners", () => {
+        var dir = new Object();
+
+        var hostPv = createProtoView([
+          createComponentElBinder(createDirectiveBinding(SomeComponent)),
+          createEmptyElBinder()
+        ]);
+
+        var spyEventAccessor1 = SpyObject.stub({"subscribe" : null});
+        var ei1 = createElementInjector({
+          'getEventEmitterAccessors': [[spyEventAccessor1]],
+          'getDirectiveAtIndex': dir
+        });
+
+        var spyEventAccessor2 = SpyObject.stub({"subscribe" : null});
+        var ei2 = createElementInjector({
+          'getEventEmitterAccessors': [[spyEventAccessor2]],
+          'getDirectiveAtIndex': dir
+        });
+
+        var shadowView = createEmptyView();
+        var hostView = createHostView(hostPv, shadowView, null, [ei1, ei2]);
+        renderer.spy('createInPlaceHostView').andReturn([new ViewRef(), new ViewRef()]);
+
+        hydrate(hostView);
+
+        expect(spyEventAccessor1.spy('subscribe')).toHaveBeenCalledWith(hostView, 0, dir);
+        expect(spyEventAccessor2.spy('subscribe')).toHaveBeenCalledWith(hostView, 1, dir);
+      });
     });
 
     describe('dehydrate... shared functionality', () => {
@@ -162,13 +195,11 @@ export function main() {
       var shadowView;
 
       function createAndHydrate(nestedProtoView) {
-        var componentInstance = {};
+        var componentInstance = new Object();
         shadowView = createEmptyView();
         var hostPv = createHostProtoView(nestedProtoView);
         hostView = createHostView(hostPv, shadowView, componentInstance);
-        renderer.spy('createInPlaceHostView').andCallFake( (a,b,c) => {
-          return [new ViewRef(), new ViewRef()];
-        });
+        renderer.spy('createInPlaceHostView').andReturn([new ViewRef(), new ViewRef()]);
 
         hydrate(hostView);
       }

modules/angular2/test/test_lib/test_lib_spec.js

@@ -80,6 +80,13 @@ export function main() {
         expect(spyObj.spy("someFunc")).toHaveBeenCalledWith(1,2);
       });
 
+      it("should support stubs", () => {
+        var s = SpyObject.stub({"a":1}, {"b":2});
+
+        expect(s.a()).toEqual(1);
+        expect(s.b()).toEqual(2);
+      });
+
       it('should create spys for all methods', () => {
         expect(() => spyObj.someFunc()).not.toThrow();
       });