RSPEC be_valid不採取行動，始終

Question

我大部分的測試工作，但由於某些原因，FactoryGirl.build ... should_not be_valid目前不聲明

describe "exceed the maximum number of subscriptions" do 
    @user = FactoryGirl.create(:user) 
    loop_count = GlobalVar::MAX_SUBSCRIPTIONS 
    loop_count.times do 
    @topic = FactoryGirl.create(:topic) 
    @subscription = FactoryGirl.create(:subscription, topic: @topic, user: @user) 
    end 
    @topic = FactoryGirl.create(:topic) 
    FactoryGirl.build(:subscription, topic: @topic, user: @user).should_not be_valid 
end 

結束工作在同規格此成功通過：

it "has a maximum length bio" do 
    FactoryGirl.build(:user, bio: "a"*251).should_not be_valid 
end 

這是我得到的錯誤的開始：我使用

(druby://192.168.1.118:53053) C:/Sites/mavens/spec/models/user_spec.rb:42:in `block (3 levels) in <top (required)>': undefined local variable or method `be_valid' for #<Class:0x7e49290> (NameError) 
    from (druby://192.168.1.118:53053) C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:238:in `module_eval' 

Spork和Guard來測試。對於每次運行，我都在spec_helper中重新加載了FactoryGirl。已重新啓動spork數次，並且在重新啓動時不起作用。讓我知道，如果我的任何額外的代碼會有所幫助，並一如既往非常感謝您的幫助！

Answer 1

你需要把在測試內部it塊：

describe "exceed the maximum number of subscriptions" do 
    it do 
    user = FactoryGirl.build(:user) 
    GlobalVar::MAX_SUBSCRIPTIONS.times do 
     topic = FactoryGirl.build(:topic) 
     FactoryGirl.build(:subscription, topic: topic, user: user) 
    end 
    topic = FactoryGirl.build(:topic) 
    FactoryGirl.build(:subscription, topic: topic, user: user).should_not be_valid 
    end 
end 

這是因爲RSpec的如何處理DSL的情況下。