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path: root/spec/services/merge_requests/reopen_service_spec.rb
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# frozen_string_literal: true

require 'spec_helper'

describe MergeRequests::ReopenService do
  let(:user) { create(:user) }
  let(:user2) { create(:user) }
  let(:guest) { create(:user) }
  let(:merge_request) { create(:merge_request, :closed, assignees: [user2], author: create(:user)) }
  let(:project) { merge_request.project }

  before do
    project.add_maintainer(user)
    project.add_developer(user2)
    project.add_guest(guest)
  end

  describe '#execute' do
    it_behaves_like 'cache counters invalidator'

    context 'valid params' do
      let(:service) { described_class.new(project, user, {}) }

      before do
        allow(service).to receive(:execute_hooks)

        perform_enqueued_jobs do
          service.execute(merge_request)
        end
      end

      it { expect(merge_request).to be_valid }
      it { expect(merge_request).to be_opened }

      it 'executes hooks with reopen action' do
        expect(service).to have_received(:execute_hooks)
                               .with(merge_request, 'reopen')
      end

      it 'sends email to user2 about reopen of merge_request' do
        email = ActionMailer::Base.deliveries.last
        expect(email.to.first).to eq(user2.email)
        expect(email.subject).to include(merge_request.title)
      end

      it 'creates system note about merge_request reopen' do
        note = merge_request.notes.last
        expect(note.note).to include 'reopened'
      end
    end

    it 'caches merge request closing issues' do
      expect(merge_request).to receive(:cache_merge_request_closes_issues!)

      described_class.new(project, user, {}).execute(merge_request)
    end

    it 'updates metrics' do
      metrics = merge_request.metrics
      service = double(MergeRequestMetricsService)
      allow(MergeRequestMetricsService)
        .to receive(:new)
        .with(metrics)
        .and_return(service)

      expect(service).to receive(:reopen)

      described_class.new(project, user, {}).execute(merge_request)
    end

    it 'refreshes the number of open merge requests for a valid MR' do
      service = described_class.new(project, user, {})

      expect { service.execute(merge_request) }
        .to change { project.open_merge_requests_count }.from(0).to(1)
    end

    context 'current user is not authorized to reopen merge request' do
      before do
        perform_enqueued_jobs do
          @merge_request = described_class.new(project, guest).execute(merge_request)
        end
      end

      it 'does not reopen the merge request' do
        expect(@merge_request).to be_closed
      end
    end
  end
end