feat(router): add location service

modules/angular2/src/mock/location_mock.js

@@ -0,0 +1,58 @@
+import {SpyObject, proxy} from 'angular2/test_lib';
+
+import {isBlank, isPresent, IMPLEMENTS} from 'angular2/src/facade/lang';
+import {EventEmitter, ObservableWrapper} from 'angular2/src/facade/async';
+import {List, ListWrapper} from 'angular2/src/facade/collection';
+import {Location} from 'angular2/src/router/location';
+
+
+@proxy
+@IMPLEMENTS(Location)
+export class DummyLocation extends SpyObject {
+  urlChanges:List<string>;
+  _path:string;
+  _subject:EventEmitter;
+
+  constructor() {
+    super();
+    this._path = '/';
+    this.urlChanges = ListWrapper.create();
+    this._subject = new EventEmitter();
+  }
+
+  setInitialPath(url:string) {
+    this._path = url;
+  }
+
+  path():string {
+    return this._path;
+  }
+
+  simulateUrlPop(pathname:string) {
+    ObservableWrapper.callNext(this._subject, {
+      'url': pathname
+    });
+  }
+
+  go(url:string) {
+    if (this._path === url) {
+      return;
+    }
+    this._path = url;
+    ListWrapper.push(this.urlChanges, url);
+  }
+
+  forward() {
+    // TODO
+  }
+
+  back() {
+    // TODO
+  }
+
+  subscribe(onNext, onThrow = null, onReturn = null) {
+    ObservableWrapper.subscribe(this._subject, onNext, onThrow, onReturn);
+  }
+
+  noSuchMethod(m){return super.noSuchMethod(m);}
+}