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# frozen_string_literal: true
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(salary: 100000).order(updated_at: :desc)
last_developer_timestamp = developers.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 "cache_key for relation with limit" do
developers = Developer.where(salary: 100000).order(updated_at: :desc).limit(5)
last_developer_timestamp = developers.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 "cache_key for loaded relation" do
developers = Developer.where(salary: 100000).order(updated_at: :desc).limit(5).load
last_developer_timestamp = developers.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 "cache_key for relation with table alias" do
table_alias = Developer.arel_table.alias("omg_developers")
table_metadata = ActiveRecord::TableMetadata.new(Developer, table_alias)
predicate_builder = ActiveRecord::PredicateBuilder.new(table_metadata)
developers = ActiveRecord::Relation.create(Developer, table_alias, predicate_builder)
developers = developers.where(salary: 100000).order(updated_at: :desc)
last_developer_timestamp = developers.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 "cache_key for relation with includes" do
comments = Comment.includes(:post).where("posts.type": "Post")
assert_match(/\Acomments\/query-(\h+)-(\d+)-(\d+)\z/, comments.cache_key)
end
test "cache_key for loaded relation with includes" do
comments = Comment.includes(:post).where("posts.type": "Post").load
assert_match(/\Acomments\/query-(\h+)-(\d+)-(\d+)\z/, comments.cache_key)
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
test "cache_key for loaded collection with zero size" do
Comment.delete_all
posts = Post.includes(:comments)
empty_loaded_collection = posts.first.comments
assert_match(/\Acomments\/query-(\h+)-0\z/, empty_loaded_collection.cache_key)
end
test "cache_key for queries with offset which return 0 rows" do
developers = Developer.offset(20)
assert_match(/\Adevelopers\/query-(\h+)-0\z/, developers.cache_key)
end
test "cache_key with a relation having selected columns" do
developers = Developer.select(:salary)
assert_match(/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\z/, developers.cache_key)
end
end
end
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