# frozen_string_literal: true

require 'spec_helper'

RSpec.describe Gitlab::GithubImport::Importer::Events::ChangedMilestone do
  subject(:importer) { described_class.new(project, client) }

  let_it_be(:project) { create(:project, :repository) }
  let_it_be(:user) { create(:user) }

  let(:client) { instance_double('Gitlab::GithubImport::Client') }
  let(:issuable) { create(:issue, project: project) }
  let!(:milestone) { create(:milestone, project: project) }

  let(:issue_event) do
    Gitlab::GithubImport::Representation::IssueEvent.from_json_hash(
      'id' => 6501124486,
      'actor' => { 'id' => user.id, 'login' => user.username },
      'event' => event_type,
      'commit_id' => nil,
      'milestone_title' => milestone.title,
      'issue_db_id' => issuable.id,
      'created_at' => '2022-04-26 18:30:53 UTC',
      'issue' => { 'number' => issuable.iid, pull_request: issuable.is_a?(MergeRequest) }
    )
  end

  let(:event_attrs) do
    {
      user_id: user.id,
      milestone_id: milestone.id,
      state: 'opened',
      created_at: issue_event.created_at
    }.stringify_keys
  end

  shared_examples 'new event' do
    it 'creates a new milestone event' do
      expect { importer.execute(issue_event) }.to change { issuable.resource_milestone_events.count }
        .from(0).to(1)
      expect(issuable.resource_milestone_events.last)
        .to have_attributes(expected_event_attrs)
    end
  end

  describe '#execute' do
    before do
      allow(Gitlab::Cache::Import::Caching).to receive(:read_integer).and_return(milestone.id)
      allow_next_instance_of(Gitlab::GithubImport::IssuableFinder) do |finder|
        allow(finder).to receive(:database_id).and_return(issuable.id)
      end
      allow_next_instance_of(Gitlab::GithubImport::UserFinder) do |finder|
        allow(finder).to receive(:find).with(user.id, user.username).and_return(user.id)
      end
    end

    context 'with Issue' do
      context 'when importing a milestoned event' do
        let(:event_type) { 'milestoned' }
        let(:expected_event_attrs) { event_attrs.merge(issue_id: issuable.id, action: 'add') }

        it_behaves_like 'new event'
      end

      context 'when importing demilestoned event' do
        let(:event_type) { 'demilestoned' }
        let(:expected_event_attrs) { event_attrs.merge(issue_id: issuable.id, action: 'remove') }

        it_behaves_like 'new event'
      end
    end

    context 'with MergeRequest' do
      let(:issuable) { create(:merge_request, source_project: project, target_project: project) }

      context 'when importing a milestoned event' do
        let(:event_type) { 'milestoned' }
        let(:expected_event_attrs) { event_attrs.merge(merge_request_id: issuable.id, action: 'add') }

        it_behaves_like 'new event'
      end

      context 'when importing demilestoned event' do
        let(:event_type) { 'demilestoned' }
        let(:expected_event_attrs) { event_attrs.merge(merge_request_id: issuable.id, action: 'remove') }

        it_behaves_like 'new event'
      end
    end
  end
end