discourse/spec/lib/theme_flag_modifier_spec.rb
Alan Guo Xiang Tan 8e3691d537 PERF: Eager load Theme associations in Stylesheet Manager.
Before this change, calling `StyleSheet::Manager.stylesheet_details`
for the first time resulted in multiple queries to the database. This is
because the code was modelled in a way where each `Theme` was loaded
from the database one at a time.

This PR restructures the code such that it allows us to load all the
theme records in a single query. It also allows us to eager load the
required associations upfront. In order to achieve this, I removed the
support of loading multiple themes per request. It was initially added
to support user selectable theme components but the feature was never
completed and abandoned because it wasn't a feature that we thought was
worth building.
2021-06-21 11:06:58 +08:00

18 lines
589 B
Ruby

# frozen_string_literal: true
require 'rails_helper'
describe ThemeModifierHelper do
fab!(:theme) { Fabricate(:theme).tap { |t| t.theme_modifier_set.update!(serialize_topic_excerpts: true) } }
it "defines a getter for modifiers" do
tmh = ThemeModifierHelper.new(theme_ids: [theme.id])
expect(tmh.serialize_topic_excerpts).to eq(true)
end
it "can extract theme ids from a request object" do
request = Rack::Request.new({ resolved_theme_id: theme.id })
tmh = ThemeModifierHelper.new(request: request)
expect(tmh.serialize_topic_excerpts).to eq(true)
end
end