discourse/spec/models/topic_list_spec.rb
David Taylor e7a84948b9
FIX: Avoid duplicate topic-list requests (#18073)
When preloading topic_list data we were giving it a 'preload key' which was loosely based on the parameters of the list. However, it did not include all parameters, and mismatches between client/server-side logic would cause the preloaded data to be ignored.

This commit simplifies things by using a single key for all topic_list preloading. This works on the assumption that "The first topic_list the JS app will load is the one which was preloaded". That assumption also existed to some extent in the old design, so we don't expect any regressions here.
2022-08-24 11:54:01 +01:00

106 lines
3.3 KiB
Ruby

# frozen_string_literal: true
RSpec.describe TopicList do
let!(:topic) {
t = Fabricate(:topic)
t.allowed_user_ids = [t.user.id]
t
}
let(:user) { topic.user }
let(:topic_list) { TopicList.new("liked", user, [topic]) }
before do
TopicList.preloaded_custom_fields.clear
end
after do
TopicList.preloaded_custom_fields.clear
end
describe ".preloaded_custom_fields" do
it "should return a unique set of values" do
TopicList.preloaded_custom_fields << "test"
TopicList.preloaded_custom_fields << "test"
TopicList.preloaded_custom_fields << "apple"
expect(TopicList.preloaded_custom_fields).to eq(Set.new(%w{test apple}))
end
end
describe "preload" do
it "allows preloading of data" do
preloaded_topic = false
preloader = lambda do |topics, topic_list|
expect(TopicList === topic_list).to eq(true)
expect(topics.length).to eq(1)
preloaded_topic = true
end
TopicList.on_preload(&preloader)
topic_list.topics
expect(preloaded_topic).to eq(true)
TopicList.cancel_preload(&preloader)
end
end
describe '#load_topics' do
it 'loads additional data for serialization' do
category_user = CategoryUser.create!(
user: user,
category: topic.category,
notification_level: NotificationLevels.all[:regular]
)
topic = topic_list.load_topics.first
expect(topic.category_user_data).to eq(category_user)
end
end
describe '#top_tags' do
it 'should return the right tags' do
tag = Fabricate(:tag, topics: [topic])
other_tag = Fabricate(:tag, topics: [topic], name: "use-anywhere")
output = [tag.name, other_tag.name]
expect(topic_list.top_tags.sort).to eq(output.sort)
end
describe 'when there are tags restricted to a category' do
fab!(:category) { Fabricate(:category) }
fab!(:topic) { Fabricate(:topic, category: category) }
fab!(:other_topic) { Fabricate(:topic) } # uncategorized
fab!(:tag) { Fabricate(:tag, topics: [topic], categories: [category], name: "category-tag") }
fab!(:other_tag) { Fabricate(:tag, topics: [topic], name: "use-anywhere") }
let(:topic_list) { TopicList.new('latest', topic.user, [topic], category: category.id, category_id: category.id) }
it 'should return tags used in the category' do
expect(topic_list.top_tags).to eq([tag.name, other_tag.name].sort)
end
it "with no category, should return all tags" do
expect(TopicList.new('latest', other_topic.user, [other_topic]).top_tags.sort).to eq([tag.name, other_tag.name].sort)
end
it "with another category with no tags, should return no tags" do
other_category = Fabricate(:category)
topic3 = Fabricate(:topic, category: other_category)
list = TopicList.new('latest', topic3.user, [topic3], category: other_category.id, category_id: other_category.id)
expect(list.top_tags).to be_empty
end
end
end
describe "#preload_key" do
let(:category) { Fabricate(:category) }
let(:tag) { Fabricate(:tag) }
it "returns topic_list" do
topic_list = TopicList.new('latest', nil, nil, category: category, category_id: category.id)
expect(topic_list.preload_key).to eq("topic_list")
end
end
end