修正需要登录的admin测试错误

spec/controllers/admin/dashboard_controller_spec.rb

@@ -2,6 +2,9 @@ require 'spec_helper'
 
 describe Admin::DashboardController do
 
+  before do
+    session[:login] = true
+  end
   describe "GET 'index'" do
     it "returns http success" do
       get 'index'

spec/controllers/admin/posts_controller_spec.rb

@@ -1,6 +1,10 @@
 require 'spec_helper'
 
 describe Admin::PostsController do
+
+  before do
+    session[:login] = true
+  end
   it "preview should return ok" do
     post :preview
     response.body.should == ""

spec/controllers/admin/sessions_controller_spec.rb

@@ -2,6 +2,9 @@ require 'spec_helper'
 
 describe Admin::SessionsController do
 
+  before do
+    session[:login] = true
+  end
   describe "GET 'new'" do
     it "returns http success" do
       get 'new'