discourse/spec/jobs/pull_hotlinked_images_spec.rb

require 'rails_helper'
require 'jobs/regular/pull_hotlinked_images'

describe Jobs::PullHotlinkedImages do

  before do
    png = Base64.decode64("R0lGODlhAQABALMAAAAAAIAAAACAAICAAAAAgIAAgACAgMDAwICAgP8AAAD/AP//AAAA//8A/wD//wBiZCH5BAEAAA8ALAAAAAABAAEAAAQC8EUAOw==")
    stub_request(:get, "http://wiki.mozilla.org/images/2/2e/Longcat1.png").to_return(body: png)
    SiteSetting.download_remote_images_to_local = true
    FastImage.expects(:size).returns([100, 100]).at_least_once
  end

  it 'replaces image src' do
    post = Fabricate(:post, raw: "<img src='http://wiki.mozilla.org/images/2/2e/Longcat1.png'>")

    Jobs::PullHotlinkedImages.new.execute(post_id: post.id)
    post.reload

    expect(post.raw).to match(/^<img src='\/uploads/)
  end

  it 'replaces image src without protocol' do
    post = Fabricate(:post, raw: "<img src='//wiki.mozilla.org/images/2/2e/Longcat1.png'>")

    Jobs::PullHotlinkedImages.new.execute(post_id: post.id)
    post.reload

    expect(post.raw).to match(/^<img src='\/uploads/)
  end

end