discourse/spec/components/stylesheet/compiler_spec.rb

# frozen_string_literal: true

require 'rails_helper'
require 'stylesheet/compiler'

describe Stylesheet::Compiler do
  describe 'compilation' do
    Dir["#{Rails.root.join("app/assets/stylesheets")}/*.scss"].each do |path|
      next if path =~ /ember_cli/

      path = File.basename(path, '.scss')

      it "can compile '#{path}' css" do
        css, _map = Stylesheet::Compiler.compile_asset(path)
        expect(css.length).to be > 1000
      end
    end
  end

  context "with a theme" do
    let!(:theme) { Fabricate(:theme) }
    let!(:upload) { UploadCreator.new(file_from_fixtures("logo.png"), "logo.png").create_for(Discourse.system_user.id) }
    let!(:upload_theme_field) { ThemeField.create!(theme: theme, target_id: 0, name: "primary", upload: upload, value: "", type_id: ThemeField.types[:theme_upload_var]) }
    let!(:stylesheet_theme_field) { ThemeField.create!(theme: theme, target_id: 0, name: "scss", value: "body { background: $primary }", type_id: ThemeField.types[:scss]) }
    before { stylesheet_theme_field.save! }

    it "theme stylesheet should be able to access theme asset variables" do
      css, _map = Stylesheet::Compiler.compile_asset("desktop_theme", theme_id: theme.id, theme_variables: theme.scss_variables)
      expect(css).to include(upload.url)
    end

    context "with a plugin" do
      let :plugin1 do
        plugin1 = Plugin::Instance.new
        plugin1.path = "#{Rails.root}/spec/fixtures/plugins/my_plugin/plugin.rb"
        plugin1.register_css "body { background: $primary }"
        plugin1
      end

      let :plugin2 do
        plugin2 = Plugin::Instance.new
        plugin2.path = "#{Rails.root}/spec/fixtures/plugins/scss_plugin/plugin.rb"
        plugin2
      end

      before do
        Discourse.plugins << plugin1
        Discourse.plugins << plugin2
        plugin1.activate!
        plugin2.activate!
        Stylesheet::Importer.register_imports!
      end

      after do
        Discourse.plugins.delete plugin1
        Discourse.plugins.delete plugin2
        Stylesheet::Importer.register_imports!
        DiscoursePluginRegistry.reset!
      end

      it "does not include theme variables in plugins" do
        css, _map = Stylesheet::Compiler.compile_asset("my_plugin", theme_id: theme.id)
        expect(css).not_to include(upload.url)
        expect(css).to include("background:")
      end

      it "supports SCSS imports" do
        css, _map = Stylesheet::Compiler.compile_asset("scss_plugin", theme_id: theme.id)

        expect(css).to include("border-color:red")
        expect(css).to include("fill:green")
        expect(css).to include("line-height:1.2em")
        expect(css).to include("border-color:#c00")
      end
    end
  end

  it "supports asset-url" do
    css, _map = Stylesheet::Compiler.compile(".body{background-image: asset-url('/images/favicons/github.png');}", "test.scss")

    expect(css).to include("url('/images/favicons/github.png')")
    expect(css).not_to include('asset-url')
  end

  it "supports image-url" do
    css, _map = Stylesheet::Compiler.compile(".body{background-image: image-url('/favicons/github.png');}", "test.scss")

    expect(css).to include("url('/favicons/github.png')")
    expect(css).not_to include('image-url')
  end

  it "supports absolute-image-url" do
    scss = Stylesheet::Importer.new({}).prepended_scss
    scss += ".body{background-image: absolute-image-url('/favicons/github.png');}"
    css, _map = Stylesheet::Compiler.compile(scss, "test.scss")

    expect(css).to include('url("http://test.localhost/images/favicons/github.png")')
    expect(css).not_to include('absolute-image-url')
  end

  it "supports absolute-image-url in subfolder" do
    set_subfolder "/subfo"
    scss = Stylesheet::Importer.new({}).prepended_scss
    scss += ".body{background-image: absolute-image-url('/favicons/github.png');}"
    css, _map = Stylesheet::Compiler.compile(scss, "test2.scss")

    expect(css).to include('url("http://test.localhost/subfo/images/favicons/github.png")')
    expect(css).not_to include('absolute-image-url')
  end

  it "supports absolute-image-url with CDNs" do
    set_cdn_url "https://awesome.com"
    scss = Stylesheet::Importer.new({}).prepended_scss
    scss += ".body{background-image: absolute-image-url('/favicons/github.png');}"
    css, _map = Stylesheet::Compiler.compile(scss, "test2.scss")

    expect(css).to include('url("https://awesome.com/images/favicons/github.png")')
    expect(css).not_to include('absolute-image-url')
  end

  it "supports absolute-image-url in plugins" do
    set_cdn_url "https://awesome.com"
    scss = Stylesheet::Importer.new({}).prepended_scss
    scss += ".body{background-image: absolute-image-url('/plugins/discourse-special/images/somefile.png');}"
    css, _map = Stylesheet::Compiler.compile(scss, "discourse-special.scss")

    expect(css).to include('url("https://awesome.com/plugins/discourse-special/images/somefile.png")')
    expect(css).not_to include('absolute-image-url')
  end

  context "with a color scheme" do
    it "returns the default color definitions when no color scheme is specified" do
      css, _map = Stylesheet::Compiler.compile_asset("color_definitions")
      expect(css).to include("--header_background:")
      expect(css).to include("--primary:")
    end

    it "returns color definitions for a custom color scheme" do
      cs = Fabricate(:color_scheme, name: 'Stylish', color_scheme_colors: [
        Fabricate(:color_scheme_color, name: 'header_primary', hex: '88af8e'),
        Fabricate(:color_scheme_color, name: 'header_background', hex: 'f8745c')
      ])

      css, _map = Stylesheet::Compiler.compile_asset("color_definitions", color_scheme_id: cs.id)

      expect(css).to include("--header_background: #f8745c")
      expect(css).to include("--header_primary: #88af8e")
      expect(css).to include("--header_background-rgb: 248,116,92")
    end

    context "with a plugin" do
      before do
        plugin = Plugin::Instance.new
        plugin.path = "#{Rails.root}/spec/fixtures/plugins/color_definition/plugin.rb"
        Discourse.plugins << plugin
        plugin.activate!
      end

      after do
        Discourse.plugins.pop
        DiscoursePluginRegistry.reset!
      end

      it "includes color definitions from plugins" do
        css, _map = Stylesheet::Compiler.compile_asset("color_definitions")

        expect(css).to include("--plugin-color")
      end
    end

  end

  describe "indexes" do
    it "include all SCSS files in their respective folders" do
      refs = []

      Dir.glob(Rails.root.join('app/assets/stylesheets/**/*/')).each do |dir|
        Dir.glob("#{dir}_index.scss").each do |indexfile|
          contents = File.read indexfile

          files = Dir["#{dir}*.scss"]
          files -= Dir["#{dir}_index.scss"]
          files.each do |path|
            filename = File.basename(path, ".scss")
            if !contents.match(/@import "#{filename}";/)
              refs << "#{filename} import missing in #{indexfile}"
            end
          end
        end
      end

      expect(refs).to eq([])
    end
  end
end