require 'spec_helper'

describe Ci::RetryBuildService do
  let(:user) { create(:user) }
  let(:project) { create(:project) }
  let(:pipeline) { create(:ci_pipeline, project: project) }
  let(:build) { create(:ci_build, pipeline: pipeline) }

  let(:service) do
    described_class.new(project, user)
  end

  CLONE_ACCESSORS = described_class::CLONE_ACCESSORS

  REJECT_ACCESSORS =
    %i[id status user token coverage trace runner artifacts_expire_at
       artifacts_file artifacts_metadata artifacts_size created_at
       updated_at started_at finished_at queued_at erased_by
       erased_at auto_canceled_by].freeze

  IGNORE_ACCESSORS =
    %i[type lock_version target_url base_tags
       commit_id deployments erased_by_id last_deployment project_id
       runner_id tag_taggings taggings tags trigger_request_id
       user_id auto_canceled_by_id retried].freeze

  shared_examples 'build duplication' do
    let(:stage) do
      # TODO, we still do not have factory for new stages, we will need to
      # switch existing factory to persist stages, instead of using LegacyStage
      #
      Ci::Stage.create!(project: project, pipeline: pipeline, name: 'test')
    end

    let(:build) do
      create(:ci_build, :failed, :artifacts_expired, :erased,
             :queued, :coverage, :tags, :allowed_to_fail, :on_tag,
             :triggered, :trace, :teardown_environment,
             description: 'my-job', stage: 'test',  pipeline: pipeline,
             auto_canceled_by: create(:ci_empty_pipeline)) do |build|
               ##
               # TODO, workaround for FactoryGirl limitation when having both
               # stage (text) and stage_id (integer) columns in the table.
               build.stage_id = stage.id
             end
    end

    describe 'clone accessors' do
      CLONE_ACCESSORS.each do |attribute|
        it "clones #{attribute} build attribute" do
          expect(new_build.send(attribute)).to be_present
          expect(new_build.send(attribute)).to eq build.send(attribute)
        end
      end
    end

    describe 'reject acessors' do
      REJECT_ACCESSORS.each do |attribute|
        it "does not clone #{attribute} build attribute" do
          expect(new_build.send(attribute)).not_to eq build.send(attribute)
        end
      end
    end

    it 'has correct number of known attributes' do
      known_accessors = CLONE_ACCESSORS + REJECT_ACCESSORS + IGNORE_ACCESSORS

      # :tag_list is a special case, this accessor does not exist
      # in reflected associations, comes from `act_as_taggable` and
      # we use it to copy tags, instead of reusing tags.
      #
      current_accessors =
        Ci::Build.attribute_names.map(&:to_sym) +
        Ci::Build.reflect_on_all_associations.map(&:name) +
        [:tag_list]

      current_accessors.uniq!

      expect(known_accessors).to contain_exactly(*current_accessors)
    end
  end

  describe '#execute' do
    let(:new_build) { service.execute(build) }

    context 'when user has ability to execute build' do
      before do
        stub_not_protect_default_branch

        project.add_developer(user)
      end

      it_behaves_like 'build duplication'

      it 'creates a new build that represents the old one' do
        expect(new_build.name).to eq build.name
      end

      it 'enqueues the new build' do
        expect(new_build).to be_pending
      end

      it 'resolves todos for old build that failed' do
        expect(MergeRequests::AddTodoWhenBuildFailsService)
          .to receive_message_chain(:new, :close)

        service.execute(build)
      end

      context 'when there are subsequent builds that are skipped' do
        let!(:subsequent_build) do
          create(:ci_build, :skipped, stage_idx: 1, pipeline: pipeline)
        end

        it 'resumes pipeline processing in subsequent stages' do
          service.execute(build)

          expect(subsequent_build.reload).to be_created
        end
      end
    end

    context 'when user does not have ability to execute build' do
      it 'raises an error' do
        expect { service.execute(build) }
          .to raise_error Gitlab::Access::AccessDeniedError
      end
    end
  end

  describe '#reprocess' do
    let(:new_build) { service.reprocess!(build) }

    context 'when user has ability to execute build' do
      before do
        stub_not_protect_default_branch

        project.add_developer(user)
      end

      it_behaves_like 'build duplication'

      it 'creates a new build that represents the old one' do
        expect(new_build.name).to eq build.name
      end

      it 'does not enqueue the new build' do
        expect(new_build).to be_created
      end

      it 'does mark old build as retried' do
        expect(new_build).to be_latest
        expect(build.reload).to be_retried
      end
    end

    context 'when user does not have ability to execute build' do
      it 'raises an error' do
        expect { service.reprocess!(build) }
          .to raise_error Gitlab::Access::AccessDeniedError
      end
    end
  end
end