fix(resolve): change resolve not to resolve root activate route

modules/@angular/router/test/resolve.spec.ts

@@ -0,0 +1,49 @@
+import {DefaultUrlSerializer} from '../src/url_serializer';
+import {UrlTree, UrlSegment} from '../src/url_tree';
+import {RouterStateSnapshot} from '../src/router_state';
+import {recognize} from '../src/recognize';
+import {resolve} from '../src/resolve';
+import {RouterConfig} from '../src/config';
+
+describe('resolve', () => {
+  it('should resolve components', () => {
+    checkResolve([
+      {path: 'a', component: "ComponentA"}
+    ], "a", {ComponentA: 'ResolvedComponentA'}, (resolved:RouterStateSnapshot) => {
+      expect(resolved.firstChild(resolved.root)._resolvedComponentFactory).toEqual('ResolvedComponentA');
+    });
+  });
+
+  it('should not resolve componentless routes', () => {
+    checkResolve([
+      {path: 'a', children: []}
+    ], "a", {}, (resolved:RouterStateSnapshot) => {
+      expect(resolved.firstChild(resolved.root)._resolvedComponentFactory).toEqual(null);
+    });
+  });
+});
+
+function checkResolve(config: RouterConfig, url: string, resolved: {[k:string]:string}, callback: any): void {
+  const resolver = {
+    resolveComponent: (component:string):Promise<any> => {
+      if (resolved[component]) {
+        return Promise.resolve(resolved[component]);
+      } else {
+        return Promise.reject("unknown component");
+      }
+    }
+  };
+
+  recognize(RootComponent, config, tree(url), url).mergeMap(s => resolve(<any>resolver, s)).subscribe(callback, e => {
+    throw e;
+  });
+}
+
+function tree(url: string): UrlTree {
+  return new DefaultUrlSerializer().parse(url);
+}
+
+class RootComponent {}
+class ComponentA {}
+class ComponentB {}
+class ComponentC {}