diff options
Diffstat (limited to 'activerecord/test')
-rw-r--r-- | activerecord/test/cases/collection_cache_key_test.rb | 70 |
1 files changed, 70 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..724234d7f4 --- /dev/null +++ b/activerecord/test/cases/collection_cache_key_test.rb @@ -0,0 +1,70 @@ +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(:nsec) + 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 |