test(providers): Add defaultFirebase injector test

Author: davideast

src/angularfire.spec.ts

@@ -1,8 +1,8 @@
-import {describe,it,beforeEach, expect} from 'angular2/testing';
+import {describe,it,beforeEach, expect, inject} from 'angular2/testing';
 import {Injector, provide, Provider} from 'angular2/core';
 import {FIREBASE_PROVIDERS, FirebaseUrl, FirebaseRef, defaultFirebase} from './angularfire';
 
-const testUrl = 'https://ng2-forum-demo.firebaseio.com';
+const testUrl = 'https://ng2-forum-demo.firebaseio.com/';
 
 describe('angularfire', () => {
   describe('FIREBASE_REF', () => {
@@ -22,5 +22,11 @@ describe('angularfire', () => {
       const provider = defaultFirebase(testUrl);
       expect(provider).toBeAnInstanceOf(Provider);
     });
+    
+    it('should inject a FIR reference', () => {
+      const injector = Injector.resolveAndCreate([defaultFirebase(testUrl), FIREBASE_PROVIDERS]);
+      expect(injector.get(FirebaseRef).toString()).toBe(testUrl);  
+    });
   });
+  
 });