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require "cases/helper"
require "models/computer"
require "models/developer"
require "models/project"
require "models/topic"
require "models/post"
require "models/comment"
module ActiveRecord
class CollectionCacheKeyTest < ActiveRecord::TestCase
fixtures :developers, :projects, :developers_projects, :topics, :comments, :posts
test "collection_cache_key on model" do
assert_match(/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\Z/, Developer.collection_cache_key)
end
test "cache_key for relation" do
developers = Developer.where(name: "David")
last_developer_timestamp = developers.order(updated_at: :desc).first.updated_at
assert_match(/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\Z/, developers.cache_key)
/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\Z/ =~ developers.cache_key
assert_equal Digest::MD5.hexdigest(developers.to_sql), $1
assert_equal developers.count.to_s, $2
assert_equal last_developer_timestamp.to_s(ActiveRecord::Base.cache_timestamp_format), $3
end
test "it triggers at most one query" do
developers = Developer.where(name: "David")
assert_queries(1) { developers.cache_key }
assert_queries(0) { developers.cache_key }
end
test "it doesn't trigger any query if the relation is already loaded" do
developers = Developer.where(name: "David").load
assert_queries(0) { developers.cache_key }
end
test "relation cache_key changes when the sql query changes" do
developers = Developer.where(name: "David")
other_relation = Developer.where(name: "David").where("1 = 1")
assert_not_equal developers.cache_key, other_relation.cache_key
end
test "cache_key for empty relation" do
developers = Developer.where(name: "Non Existent Developer")
assert_match(/\Adevelopers\/query-(\h+)-0\Z/, developers.cache_key)
end
test "cache_key with custom timestamp column" do
topics = Topic.where("title like ?", "%Topic%")
last_topic_timestamp = topics(:fifth).written_on.utc.to_s(:usec)
assert_match(last_topic_timestamp, topics.cache_key(:written_on))
end
test "cache_key with unknown timestamp column" do
topics = Topic.where("title like ?", "%Topic%")
assert_raises(ActiveRecord::StatementInvalid) { topics.cache_key(:published_at) }
end
test "collection proxy provides a cache_key" do
developers = projects(:active_record).developers
assert_match(/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\Z/, developers.cache_key)
end
end
end
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