activerecord/test/cases/cache_key_test.rb


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require "cases/helper"

module ActiveRecord
  class CacheKeyTest < ActiveRecord::TestCase
    self.use_transactional_tests = false

    class CacheMe < ActiveRecord::Base
      self.cache_versioning = false
    end

    class CacheMeWithVersion < ActiveRecord::Base
      self.cache_versioning = true
    end

    setup do
      @connection = ActiveRecord::Base.connection
      @connection.create_table(:cache_mes, force: true) { |t| t.timestamps }
      @connection.create_table(:cache_me_with_versions, force: true) { |t| t.timestamps }
    end

    teardown do
      @connection.drop_table :cache_mes, if_exists: true
      @connection.drop_table :cache_me_with_versions, if_exists: true
    end

    test "cache_key format is not too precise" do
      record = CacheMe.create
      key = record.cache_key

      assert_equal key, record.reload.cache_key
    end

    test "cache_key has no version when versioning is on" do
      record = CacheMeWithVersion.create
      assert_equal "active_record/cache_key_test/cache_me_with_versions/#{record.id}", record.cache_key
    end

    test "cache_version is only there when versioning is on" do
      assert CacheMeWithVersion.create.cache_version.present?
      assert_not CacheMe.create.cache_version.present?
    end
  end
end