discourse/spec/components/stylesheet/compiler_spec.rb

require 'rails_helper'
require 'stylesheet/compiler'

describe Stylesheet::Compiler do
  it "can compile desktop mobile and desktop css" do
    css,_map = Stylesheet::Compiler.compile_asset("desktop")
    expect(css.length).to be > 1000

    css,_map = Stylesheet::Compiler.compile_asset("mobile")
    expect(css.length).to be > 1000
  end

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

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

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

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