diff options
Diffstat (limited to 'activerecord/test/cases/collection_cache_key_test.rb')
| -rw-r--r-- | activerecord/test/cases/collection_cache_key_test.rb | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/activerecord/test/cases/collection_cache_key_test.rb b/activerecord/test/cases/collection_cache_key_test.rb new file mode 100644 index 0000000000..a5d908344a --- /dev/null +++ b/activerecord/test/cases/collection_cache_key_test.rb @@ -0,0 +1,161 @@ +# 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 ActiveSupport::Digest.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 ActiveSupport::Digest.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 ActiveSupport::Digest.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: table_alias, + predicate_builder: 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 ActiveSupport::Digest.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 + + test "cache_key with a relation having distinct and order" do + developers = Developer.distinct.order(:salary).limit(5) + + assert_match(/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\z/, developers.cache_key) + end + + test "cache_key with a relation having custom select and order" do + developers = Developer.select("name AS dev_name").order("dev_name DESC").limit(5) + + assert_match(/\Adevelopers\/query-(\h+)-(\d+)-(\d+)\z/, developers.cache_key) + end + end +end |