添加预构件

spec/models/user_spec.rb

@@ -12,6 +12,11 @@ describe User do
   it { should respond_to(:login) }
   it { should respond_to(:mail) }
 
+  #此处采用与构建的方式生成数据
+  # it"is invalid without login" do
+  #   user=FactoryGirl.build(:user,login: nil)
+  #   expect(user).to_not be_valid
+  # end
   #用户名唯一性的测试
   describe "when login  is already taken" do
     before do