ruby-on-rails – 如何测试rails缓存功能
发布时间:2020-12-17 03:31:09 所属栏目:百科 来源:网络整理
导读:这是我的Tag模型,我不知道如何测试Rails.cache功能. class Tag ActiveRecord::Base class self def all_cached Rails.cache.fetch("tags.all",:expires_in = 3.hours) do Tag.order('name asc').to_a end end def find_cached(id) Rails.cache.fetch("tags/#
这是我的Tag模型,我不知道如何测试Rails.cache功能.
class Tag < ActiveRecord::Base class << self def all_cached Rails.cache.fetch("tags.all",:expires_in => 3.hours) do Tag.order('name asc').to_a end end def find_cached(id) Rails.cache.fetch("tags/#{id}",:expires_in => 3.hours) do Tag.find(id) end end end attr_accessible :name has_friendly_id :name,:use_slug => true,:approximate_ascii => true has_many :taggings #,:dependent => :destroy has_many :projects,:through => :taggings end 你知道怎么测试吗? 解决方法
嗯,首先,你不应该真正测试框架. Rails的缓存测试表面上可以为您提供.也就是说,你可以使用
this answer找一个小帮手.您的测试看起来像是这样的:
describe Tag do describe "::all_cached" do around {|ex| with_caching { ex.run } } before { Rails.cache.clear } context "given that the cache is unpopulated" do it "does a database lookup" do Tag.should_receive(:order).once.and_return(["tag"]) Tag.all_cached.should == ["tag"] end end context "given that the cache is populated" do let!(:first_hit) { Tag.all_cached } it "does a cache lookup" do before do Tag.should_not_receive(:order) Tag.all_cached.should == first_hit end end end end end 这实际上并没有检查缓存机制 – 只是没有调用#fetch块.它很脆弱并且与获取块的实现相关联,因此要注意它将成为维护债务. (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |