discourse/spec/components/scss_checker_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

37 lines
1.3 KiB
Ruby

# frozen_string_literal: true
require 'rails_helper'
describe Stylesheet::Manager::ScssChecker do
fab!(:theme) { Fabricate(:theme) }
describe '#has_scss' do
it 'should return true when theme has scss' do
scss_theme = Fabricate(:theme, component: true)
scss_theme.set_field(target: :common, name: "scss", value: ".scss{color: red;}")
scss_theme.save!
embedded_scss_theme = Fabricate(:theme, component: true)
embedded_scss_theme.set_field(target: :common, name: "embedded_scss", value: ".scss{color: red;}")
embedded_scss_theme.save!
theme_ids = [scss_theme.id, embedded_scss_theme.id]
desktop_theme_checker = described_class.new(:desktop_theme, theme_ids)
expect(desktop_theme_checker.has_scss(scss_theme.id)).to eq(true)
expect(desktop_theme_checker.has_scss(embedded_scss_theme.id)).to eq(false)
embedded_theme_checker = described_class.new(:embedded_theme, theme_ids)
expect(embedded_theme_checker.has_scss(scss_theme.id)).to eq(false)
expect(embedded_theme_checker.has_scss(embedded_scss_theme.id)).to eq(true)
end
it 'should return false when theme does not have scss' do
expect(described_class.new(:desktop_theme, [theme.id]).has_scss(theme.id))
.to eq(false)
end
end
end