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approval_service_spec.rb « merge_requests « services « spec - gitlab.com/gitlab-org/gitlab-foss.git - Unnamed repository; edit this file 'description' to name the repository.
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# frozen_string_literal: true

require 'spec_helper'

RSpec.describe MergeRequests::ApprovalService do
  describe '#execute' do
    let(:user)          { create(:user) }
    let(:merge_request) { create(:merge_request, reviewers: [user]) }
    let(:project)       { merge_request.project }
    let!(:todo)         { create(:todo, user: user, project: project, target: merge_request) }

    subject(:service) { described_class.new(project: project, current_user: user) }

    before do
      project.add_developer(user)
    end

    context 'with invalid approval' do
      before do
        allow(merge_request.approvals).to receive(:new).and_return(double(save: false))
      end

      it 'does not reset approvals' do
        expect(merge_request.approvals).not_to receive(:reset)

        service.execute(merge_request)
      end

      it 'does not track merge request approve action' do
        expect(Gitlab::UsageDataCounters::MergeRequestActivityUniqueCounter)
          .not_to receive(:track_approve_mr_action).with(user: user)

        service.execute(merge_request)
      end

      it 'does not publish MergeRequests::ApprovedEvent' do
        expect { service.execute(merge_request) }.not_to publish_event(MergeRequests::ApprovedEvent)
      end
    end

    context 'with an already approved MR' do
      before do
        merge_request.approvals.create!(user: user)
      end

      it 'does not create an approval' do
        expect { service.execute(merge_request) }.not_to change { merge_request.approvals.size }
      end
    end

    context 'with valid approval' do
      it 'resets approvals' do
        expect(merge_request.approvals).to receive(:reset)

        service.execute(merge_request)
      end

      it 'tracks merge request approve action' do
        expect(Gitlab::UsageDataCounters::MergeRequestActivityUniqueCounter)
          .to receive(:track_approve_mr_action).with(user: user, merge_request: merge_request)

        service.execute(merge_request)
      end

      it 'publishes MergeRequests::ApprovedEvent' do
        expect { service.execute(merge_request) }
          .to publish_event(MergeRequests::ApprovedEvent)
          .with(current_user_id: user.id, merge_request_id: merge_request.id)
      end
    end

    context 'user cannot update the merge request' do
      before do
        project.add_guest(user)
      end

      it 'does not update approvals' do
        expect { service.execute(merge_request) }.not_to change { merge_request.approvals.size }
      end
    end
  end
end