为什么我在开发 Rails 缓存中看到测试环境数据？

Question

I am attempting to cache a class variable like so:

Rails.cache.write("@@page_types", @@page_types)

This method is called within a class I have called PageTypes.

If I start up a rails console and do:

Rails.cache.write("@@page_types", nil)
Rails.cache.read("@@page_types")

I get nil. I leave the console open and do this in another window:

rake test:units

When the tests are over, I switch back to my rails console window and do

Rails.cache.read("@@page_types")

It returns an array of my test page types, I'm positive they are from my test db because the models all have super high IDs. while my dev data all has very low ones.

I suppose I could append Rails.env to the cache keys, but it seems like the two caches shouldn't be mixing....

Answer 1

Define a different cache backend for your test environment. A memory_store should be perfect for unit tests.

ActionController::Base.cache_store = :memory_store

in config/environments/test.rb:

config.cache_store = :memory_store