discourse/plugins/poll/spec/requests/topics_controller_spec.rb
Bianca Nenciu dd5502f166
PERF: Cache serialized voters at topic view level (#28894)
This commit introduces a way to fetch the "serialized voters" for
multiple polls.

* Use a single query to fetch voters for all types of polls

* Refactor to introduce all_serialized_voters

* Cache serialized voters
2024-09-18 12:01:40 +03:00

55 lines
1.9 KiB
Ruby

# frozen_string_literal: true
RSpec.describe PostsController do
fab!(:admin) { Fabricate(:admin) }
fab!(:topic) { Fabricate(:topic, user: admin) }
fab!(:post1) { Fabricate(:post, topic:, raw: "[poll]\n- A\n- B\n[/poll]") }
fab!(:post2) { Fabricate(:post, topic:, raw: "[poll results=on_vote]\n- A\n- B\n[/poll]") }
fab!(:post3) { Fabricate(:post, topic:, raw: "[poll results=on_vote]\n- A\n- B\n[/poll]") }
fab!(:post4) { Fabricate(:post, topic:, raw: "[poll results=on_vote]\n- A\n- B\n[/poll]") }
fab!(:post5) do
Fabricate(:post, topic:, raw: "[poll public=true results=staff_only]\n- A\n- B\n[/poll]")
end
fab!(:post6) do
Fabricate(:post, topic:, raw: "[poll public=true results=staff_only]\n- A\n- B\n[/poll]")
end
fab!(:post7) { Fabricate(:post, topic:, raw: "[poll public=true]\n- A\n- B\n[/poll]") }
describe "#show" do
context "when not logged in" do
it "does not create N+1 queries to load polls" do
queries = track_sql_queries { get "/t/#{topic.id}.json" }
expect(response.status).to eq(200)
poll_queries = queries.filter { |q| q =~ /FROM "?poll/ }
# Expected queries:
#
# - load all polls
# - load all options
# - count votes for each poll
# - count votes for each option
# - voters for poll in post7
expect(poll_queries.size).to eq(5)
end
end
context "when logged in" do
before { sign_in(admin) }
it "does not create N+1 queries to load polls" do
queries = track_sql_queries { get "/t/#{topic.id}.json" }
poll_queries = queries.filter { |q| q =~ /FROM "?poll/ }
# Expected queries:
#
# - all queries listed for "when not logged in" (except it loads voters for polls in post5, post6 and post7)
# - query to find out if the user has voted in each poll
expect(poll_queries.size).to eq(6)
end
end
end
end