mastodon/spec/lib/activitypub/activity/delete_spec.rb

require 'rails_helper'

RSpec.describe ActivityPub::Activity::Delete do
  let(:sender)    { Fabricate(:account) }
  let(:status)    { Fabricate(:status, account: sender, uri: 'foobar') }

  let(:json) do
    {
      '@context': 'https://www.w3.org/ns/activitystreams',
      id: 'foo',
      type: 'Delete',
      actor: ActivityPub::TagManager.instance.uri_for(sender),
      object: ActivityPub::TagManager.instance.uri_for(status),
      signature: 'foo',
    }.with_indifferent_access
  end

  describe '#perform' do
    subject { described_class.new(json, sender) }

    before do
      subject.perform
    end

    it 'deletes sender\'s status' do
      expect(Status.find_by(id: status.id)).to be_nil
    end
  end

  context 'when the status has been reblogged' do
    describe '#perform' do
      subject { described_class.new(json, sender) }
      let(:reblogger) { Fabricate(:account) }
      let(:follower)   { Fabricate(:account, username: 'follower', protocol: :activitypub, domain: 'example.com', inbox_url: 'http://example.com/inbox') }

      before do
        stub_request(:post, 'http://example.com/inbox').to_return(status: 200)
        follower.follow!(reblogger)
        Fabricate(:status, account: reblogger, reblog: status)
        subject.perform
      end

      it 'deletes sender\'s status' do
        expect(Status.find_by(id: status.id)).to be_nil
      end

      it 'sends delete activity to followers of rebloggers' do
        # one for Delete original post, and one for Undo reblog (normal delivery)
        expect(a_request(:post, 'http://example.com/inbox')).to have_been_made.twice
      end
    end
  end
end