Avoid global resolver in tests/node app setup

Author: mixonic

tests/node/app-boot-test.js

@@ -41,6 +41,7 @@ QUnit.module('App Boot', function (hooks) {
   QUnit.test('{{link-to}}', function (assert) {
     this.template('application', "<h1>{{#link-to 'photos'}}Go to photos{{/link-to}}</h1>");
     this.routes(function () {
+      console.log("YAH");
       this.route('photos');
     });
 

tests/node/helpers/setup-app.js

@@ -92,16 +92,23 @@ function createApplication() {
 
   let app = this.Ember.Application.extend().create({
     autoboot: false,
+    Resolver: {
+      create: specifier => {
+        return this.registry[specifier];
+      },
+    },
   });
 
-  app.Router = this.Ember.Router.extend({
+  let Router = this.Ember.Router.extend({
     location: 'none',
   });
 
   if (this.routesCallback) {
-    app.Router.map(this.routesCallback);
+    Router.map(this.routesCallback);
   }
 
+  this.register('router:main', Router);
+
   registerApplicationClasses(app, this.registry);
 
   // Run application initializers