discourse/spec/components/stylesheet/importer_spec.rb

# frozen_string_literal: true

require 'rails_helper'
require 'stylesheet/importer'

describe Stylesheet::Importer do

  def compile_css(name)
    Stylesheet::Compiler.compile_asset(name)[0]
  end

  context "#category_backgrounds" do
    it "applies CDN to background category images" do
      expect(compile_css("color_definitions")).to_not include("body.category-")

      background = Fabricate(:upload)
      parent_category = Fabricate(:category)
      category = Fabricate(:category, parent_category_id: parent_category.id, uploaded_background: background)

      expect(compile_css("color_definitions")).to include("body.category-#{parent_category.slug}-#{category.slug}{background-image:url(#{background.url})}")

      GlobalSetting.stubs(:cdn_url).returns("//awesome.cdn")
      expect(compile_css("color_definitions")).to include("body.category-#{parent_category.slug}-#{category.slug}{background-image:url(//awesome.cdn#{background.url})}")
    end

    it "applies S3 CDN to background category images" do
      setup_s3
      SiteSetting.s3_use_iam_profile = true
      SiteSetting.s3_upload_bucket = 'test'
      SiteSetting.s3_region = 'ap-southeast-2'
      SiteSetting.s3_cdn_url = "https://s3.cdn"

      background = Fabricate(:upload_s3)
      category = Fabricate(:category, uploaded_background: background)

      expect(compile_css("color_definitions")).to include("body.category-#{category.slug}{background-image:url(https://s3.cdn/original")
    end

  end

  context "#font" do
    it "includes font variable" do
      default_font = ":root{--font-family: Arial, sans-serif}"
      expect(compile_css("color_definitions")).to include(default_font)
      expect(compile_css("embed")).to include(default_font)
      expect(compile_css("publish")).to include(default_font)
    end

    it "includes separate body and heading font declarations" do
      base_font = DiscourseFonts.fonts[2]
      heading_font = DiscourseFonts.fonts[3]

      SiteSetting.base_font = base_font[:key]
      SiteSetting.heading_font = heading_font[:key]

      expect(compile_css("color_definitions"))
        .to include(":root{--font-family: #{base_font[:stack]}}")
        .and include(":root{--heading-font-family: #{heading_font[:stack]}}")

      set_cdn_url("http://cdn.localhost")

      # uses CDN and includes cache-breaking param
      expect(compile_css("color_definitions"))
        .to include("http://cdn.localhost/fonts/#{base_font[:variants][0][:filename]}?v=#{DiscourseFonts::VERSION}")
        .and include("http://cdn.localhost/fonts/#{heading_font[:variants][0][:filename]}?v=#{DiscourseFonts::VERSION}")
    end

    it "includes all fonts in wizard" do
      expect(compile_css("wizard").scan(/\.body-font-/).count)
        .to eq(DiscourseFonts.fonts.count)

      expect(compile_css("wizard").scan(/\.heading-font-/).count)
        .to eq(DiscourseFonts.fonts.count)

      expect(compile_css("wizard").scan(/@font-face/).count)
        .to eq(DiscourseFonts.fonts.map { |f| f[:variants]&.count || 0 }.sum)
    end
  end

  context "#import_color_definitions" do
    let(:scss) { ":root{--custom-color: green}" }
    let(:scss_child) { "$navy: #000080; :root{--custom-color: red; --custom-color-rgb: \#{hexToRGB($navy)}}" }

    let(:theme) do
      Fabricate(:theme).tap do |t|
        t.set_field(target: :common, name: "color_definitions", value: scss)
        t.save!
      end
    end

    let(:child) { Fabricate(:theme, component: true, name: "Child Theme").tap { |t|
      t.set_field(target: :common, name: "color_definitions", value: scss_child)
      t.save!
    }}

    it "should include color definitions in the theme" do
      styles = Stylesheet::Importer.new({ theme_id: theme.id }).import_color_definitions
      expect(styles).to include(scss)
    end

    it "should include color definitions from components" do
      theme.add_relative_theme!(:child, child)
      theme.save!

      styles = Stylesheet::Importer.new({ theme_id: theme.id }).import_color_definitions
      expect(styles).to include("Color definitions from Child Theme")
      expect(styles).to include("--custom-color: red")
      expect(styles).to include("--custom-color-rgb: 0,0,128")

    end

    it "should include default theme color definitions" do
      SiteSetting.default_theme_id = theme.id
      styles = Stylesheet::Importer.new({}).import_color_definitions
      expect(styles).to include(scss)
    end
  end

  context "#import_wcag_overrides" do
    it "should do nothing on a regular scheme" do
      scheme = ColorScheme.create_from_base(name: 'Regular')
      expect(Stylesheet::Importer.new({ color_scheme_id: scheme.id }).import_wcag_overrides).to eq("")
    end

    it "should include WCAG overrides for WCAG based scheme" do
      scheme = ColorScheme.create_from_base(name: 'WCAG New', base_scheme_id: "WCAG Dark")
      expect(Stylesheet::Importer.new({ color_scheme_id: scheme.id }).import_wcag_overrides).to eq("@import \"wcag\";")
    end
  end
end