require 'spec_helper'

describe Ci::Pipeline, :mailer do
  let(:user) { create(:user) }
  set(:project) { create(:project) }

  let(:pipeline) do
    create(:ci_empty_pipeline, status: :created, project: project)
  end

  it_behaves_like 'having unique enum values'

  it { is_expected.to belong_to(:project) }
  it { is_expected.to belong_to(:user) }
  it { is_expected.to belong_to(:auto_canceled_by) }
  it { is_expected.to belong_to(:pipeline_schedule) }
  it { is_expected.to belong_to(:merge_request) }

  it { is_expected.to have_many(:statuses) }
  it { is_expected.to have_many(:trigger_requests) }
  it { is_expected.to have_many(:variables) }
  it { is_expected.to have_many(:builds) }
  it { is_expected.to have_many(:auto_canceled_pipelines) }
  it { is_expected.to have_many(:auto_canceled_jobs) }

  it { is_expected.to validate_presence_of(:sha) }
  it { is_expected.to validate_presence_of(:status) }

  it { is_expected.to respond_to :git_author_name }
  it { is_expected.to respond_to :git_author_email }
  it { is_expected.to respond_to :short_sha }
  it { is_expected.to delegate_method(:full_path).to(:project).with_prefix }

  describe 'associations' do
    it 'has a bidirectional relationship with projects' do
      expect(described_class.reflect_on_association(:project).has_inverse?).to eq(:all_pipelines)
      expect(Project.reflect_on_association(:all_pipelines).has_inverse?).to eq(:project)
      expect(Project.reflect_on_association(:ci_pipelines).has_inverse?).to eq(:project)
    end
  end

  describe '.processables' do
    before do
      create(:ci_build, name: 'build', pipeline: pipeline)
      create(:ci_bridge, name: 'bridge', pipeline: pipeline)
      create(:commit_status, name: 'commit status', pipeline: pipeline)
      create(:generic_commit_status, name: 'generic status', pipeline: pipeline)
    end

    it 'has an association with processable CI/CD entities' do
      pipeline.processables.pluck('name').yield_self do |processables|
        expect(processables).to match_array %w[build bridge]
      end
    end

    it 'makes it possible to append a new processable' do
      pipeline.processables << build(:ci_bridge)

      pipeline.save!

      expect(pipeline.processables.reload.count).to eq 3
    end
  end

  describe '.sort_by_merge_request_pipelines' do
    subject { described_class.sort_by_merge_request_pipelines }

    context 'when branch pipelines exist' do
      let!(:branch_pipeline_1) { create(:ci_pipeline, source: :push) }
      let!(:branch_pipeline_2) { create(:ci_pipeline, source: :push) }

      it 'returns pipelines order by id' do
        expect(subject).to eq([branch_pipeline_2,
                               branch_pipeline_1])
      end
    end

    context 'when merge request pipelines exist' do
      let!(:merge_request_pipeline_1) do
        create(:ci_pipeline, source: :merge_request, merge_request: merge_request)
      end

      let!(:merge_request_pipeline_2) do
        create(:ci_pipeline, source: :merge_request, merge_request: merge_request)
      end

      let(:merge_request) do
        create(:merge_request,
               source_project: project,
               source_branch: 'feature',
               target_project: project,
               target_branch: 'master')
      end

      it 'returns pipelines order by id' do
        expect(subject).to eq([merge_request_pipeline_2,
                               merge_request_pipeline_1])
      end
    end

    context 'when both branch pipeline and merge request pipeline exist' do
      let!(:branch_pipeline_1) { create(:ci_pipeline, source: :push) }
      let!(:branch_pipeline_2) { create(:ci_pipeline, source: :push) }

      let!(:merge_request_pipeline_1) do
        create(:ci_pipeline, source: :merge_request, merge_request: merge_request)
      end

      let!(:merge_request_pipeline_2) do
        create(:ci_pipeline, source: :merge_request, merge_request: merge_request)
      end

      let(:merge_request) do
        create(:merge_request,
               source_project: project,
               source_branch: 'feature',
               target_project: project,
               target_branch: 'master')
      end

      it 'returns merge request pipeline first' do
        expect(subject).to eq([merge_request_pipeline_2,
                               merge_request_pipeline_1,
                               branch_pipeline_2,
                               branch_pipeline_1])
      end
    end
  end

  describe '.merge_request' do
    subject { described_class.merge_request }

    context 'when there is a merge request pipeline' do
      let!(:pipeline) { create(:ci_pipeline, source: :merge_request, merge_request: merge_request) }
      let(:merge_request) { create(:merge_request) }

      it 'returns merge request pipeline first' do
        expect(subject).to eq([pipeline])
      end
    end

    context 'when there are no merge request pipelines' do
      let!(:pipeline) { create(:ci_pipeline, source: :push) }

      it 'returns empty array' do
        expect(subject).to be_empty
      end
    end
  end

  describe 'Validations for merge request pipelines' do
    let(:pipeline) { build(:ci_pipeline, source: source, merge_request: merge_request) }

    context 'when source is merge request' do
      let(:source) { :merge_request }

      context 'when merge request is specified' do
        let(:merge_request) { create(:merge_request, source_project: project, source_branch: 'feature', target_project: project, target_branch: 'master') }

        it { expect(pipeline).to be_valid }
      end

      context 'when merge request is empty' do
        let(:merge_request) { nil }

        it { expect(pipeline).not_to be_valid }
      end
    end

    context 'when source is web' do
      let(:source) { :web }

      context 'when merge request is specified' do
        let(:merge_request) { create(:merge_request, source_project: project, source_branch: 'feature', target_project: project, target_branch: 'master') }

        it { expect(pipeline).not_to be_valid }
      end

      context 'when merge request is empty' do
        let(:merge_request) { nil }

        it { expect(pipeline).to be_valid }
      end
    end
  end

  describe 'modules' do
    it_behaves_like 'AtomicInternalId', validate_presence: false do
      let(:internal_id_attribute) { :iid }
      let(:instance) { build(:ci_pipeline) }
      let(:scope) { :project }
      let(:scope_attrs) { { project: instance.project } }
      let(:usage) { :ci_pipelines }
    end
  end

  describe '#source' do
    context 'when creating new pipeline' do
      let(:pipeline) do
        build(:ci_empty_pipeline, status: :created, project: project, source: nil)
      end

      it "prevents from creating an object" do
        expect(pipeline).not_to be_valid
      end
    end

    context 'when updating existing pipeline' do
      before do
        pipeline.update_attribute(:source, nil)
      end

      it "object is valid" do
        expect(pipeline).to be_valid
      end
    end
  end

  describe '#block' do
    it 'changes pipeline status to manual' do
      expect(pipeline.block).to be true
      expect(pipeline.reload).to be_manual
      expect(pipeline.reload).to be_blocked
    end
  end

  describe '#delay' do
    subject { pipeline.delay }

    let(:pipeline) { build(:ci_pipeline, status: :created) }

    it 'changes pipeline status to schedule' do
      subject

      expect(pipeline).to be_scheduled
    end
  end

  describe '#valid_commit_sha' do
    context 'commit.sha can not start with 00000000' do
      before do
        pipeline.sha = '0' * 40
        pipeline.valid_commit_sha
      end

      it('commit errors should not be empty') { expect(pipeline.errors).not_to be_empty }
    end
  end

  describe '#short_sha' do
    subject { pipeline.short_sha }

    it 'has 8 items' do
      expect(subject.size).to eq(8)
    end
    it { expect(pipeline.sha).to start_with(subject) }
  end

  describe '#retried' do
    subject { pipeline.retried }

    before do
      @build1 = create(:ci_build, pipeline: pipeline, name: 'deploy', retried: true)
      @build2 = create(:ci_build, pipeline: pipeline, name: 'deploy')
    end

    it 'returns old builds' do
      is_expected.to contain_exactly(@build1)
    end
  end

  describe "coverage" do
    let(:project) { create(:project, build_coverage_regex: "/.*/") }
    let(:pipeline) { create(:ci_empty_pipeline, project: project) }

    it "calculates average when there are two builds with coverage" do
      create(:ci_build, name: "rspec", coverage: 30, pipeline: pipeline)
      create(:ci_build, name: "rubocop", coverage: 40, pipeline: pipeline)
      expect(pipeline.coverage).to eq("35.00")
    end

    it "calculates average when there are two builds with coverage and one with nil" do
      create(:ci_build, name: "rspec", coverage: 30, pipeline: pipeline)
      create(:ci_build, name: "rubocop", coverage: 40, pipeline: pipeline)
      create(:ci_build, pipeline: pipeline)
      expect(pipeline.coverage).to eq("35.00")
    end

    it "calculates average when there are two builds with coverage and one is retried" do
      create(:ci_build, name: "rspec", coverage: 30, pipeline: pipeline)
      create(:ci_build, name: "rubocop", coverage: 30, pipeline: pipeline, retried: true)
      create(:ci_build, name: "rubocop", coverage: 40, pipeline: pipeline)
      expect(pipeline.coverage).to eq("35.00")
    end

    it "calculates average when there is one build without coverage" do
      FactoryBot.create(:ci_build, pipeline: pipeline)
      expect(pipeline.coverage).to be_nil
    end
  end

  describe '#retryable?' do
    subject { pipeline.retryable? }

    context 'no failed builds' do
      before do
        create_build('rspec', 'success')
      end

      it 'is not retryable' do
        is_expected.to be_falsey
      end

      context 'one canceled job' do
        before do
          create_build('rubocop', 'canceled')
        end

        it 'is retryable' do
          is_expected.to be_truthy
        end
      end
    end

    context 'with failed builds' do
      before do
        create_build('rspec', 'running')
        create_build('rubocop', 'failed')
      end

      it 'is retryable' do
        is_expected.to be_truthy
      end
    end

    def create_build(name, status)
      create(:ci_build, name: name, status: status, pipeline: pipeline)
    end
  end

  describe '#persisted_variables' do
    context 'when pipeline is not persisted yet' do
      subject { build(:ci_pipeline).persisted_variables }

      it 'does not contain some variables' do
        keys = subject.map { |variable| variable[:key] }

        expect(keys).not_to include 'CI_PIPELINE_ID'
      end
    end

    context 'when pipeline is persisted' do
      subject { build_stubbed(:ci_pipeline).persisted_variables }

      it 'does contains persisted variables' do
        keys = subject.map { |variable| variable[:key] }

        expect(keys).to eq %w[CI_PIPELINE_ID CI_PIPELINE_URL]
      end
    end
  end

  describe '#predefined_variables' do
    subject { pipeline.predefined_variables }

    it 'includes all predefined variables in a valid order' do
      keys = subject.map { |variable| variable[:key] }

      expect(keys).to eq %w[CI_PIPELINE_IID
                            CI_CONFIG_PATH
                            CI_PIPELINE_SOURCE
                            CI_COMMIT_MESSAGE
                            CI_COMMIT_TITLE
                            CI_COMMIT_DESCRIPTION]
    end

    context 'when source is merge request' do
      let(:pipeline) do
        create(:ci_pipeline, source: :merge_request, merge_request: merge_request)
      end

      let(:merge_request) do
        create(:merge_request,
               source_project: project,
               source_branch: 'feature',
               target_project: project,
               target_branch: 'master')
      end

      it 'exposes merge request pipeline variables' do
        expect(subject.to_hash)
          .to include(
            'CI_MERGE_REQUEST_ID' => merge_request.id.to_s,
            'CI_MERGE_REQUEST_IID' => merge_request.iid.to_s,
            'CI_MERGE_REQUEST_REF_PATH' => merge_request.ref_path.to_s,
            'CI_MERGE_REQUEST_PROJECT_ID' => merge_request.project.id.to_s,
            'CI_MERGE_REQUEST_PROJECT_PATH' => merge_request.project.full_path,
            'CI_MERGE_REQUEST_PROJECT_URL' => merge_request.project.web_url,
            'CI_MERGE_REQUEST_TARGET_BRANCH_NAME' => merge_request.target_branch.to_s,
            'CI_MERGE_REQUEST_SOURCE_PROJECT_ID' => merge_request.source_project.id.to_s,
            'CI_MERGE_REQUEST_SOURCE_PROJECT_PATH' => merge_request.source_project.full_path,
            'CI_MERGE_REQUEST_SOURCE_PROJECT_URL' => merge_request.source_project.web_url,
            'CI_MERGE_REQUEST_SOURCE_BRANCH_NAME' => merge_request.source_branch.to_s)
      end

      context 'when source project does not exist' do
        before do
          merge_request.update_column(:source_project_id, nil)
        end

        it 'does not expose source project related variables' do
          expect(subject.to_hash.keys).not_to include(
            %w[CI_MERGE_REQUEST_SOURCE_PROJECT_ID
               CI_MERGE_REQUEST_SOURCE_PROJECT_PATH
               CI_MERGE_REQUEST_SOURCE_PROJECT_URL
               CI_MERGE_REQUEST_SOURCE_BRANCH_NAME])
        end
      end
    end
  end

  describe '#protected_ref?' do
    before do
      pipeline.project = create(:project, :repository)
    end

    it 'delegates method to project' do
      expect(pipeline).not_to be_protected_ref
    end
  end

  describe '#legacy_trigger' do
    let(:trigger_request) { create(:ci_trigger_request) }

    before do
      pipeline.trigger_requests << trigger_request
    end

    it 'returns first trigger request' do
      expect(pipeline.legacy_trigger).to eq trigger_request
    end
  end

  describe '#auto_canceled?' do
    subject { pipeline.auto_canceled? }

    context 'when it is canceled' do
      before do
        pipeline.cancel
      end

      context 'when there is auto_canceled_by' do
        before do
          pipeline.update(auto_canceled_by: create(:ci_empty_pipeline))
        end

        it 'is auto canceled' do
          is_expected.to be_truthy
        end
      end

      context 'when there is no auto_canceled_by' do
        it 'is not auto canceled' do
          is_expected.to be_falsey
        end
      end

      context 'when it is retried and canceled manually' do
        before do
          pipeline.enqueue
          pipeline.cancel
        end

        it 'is not auto canceled' do
          is_expected.to be_falsey
        end
      end
    end
  end

  describe 'pipeline stages' do
    describe '#stage_seeds' do
      let(:pipeline) { build(:ci_pipeline, config: config) }
      let(:config) { { rspec: { script: 'rake' } } }

      it 'returns preseeded stage seeds object' do
        expect(pipeline.stage_seeds)
          .to all(be_a Gitlab::Ci::Pipeline::Seed::Base)
        expect(pipeline.stage_seeds.count).to eq 1
      end

      context 'when no refs policy is specified' do
        let(:config) do
          { production: { stage: 'deploy', script: 'cap prod' },
            rspec: { stage: 'test', script: 'rspec' },
            spinach: { stage: 'test', script: 'spinach' } }
        end

        it 'correctly fabricates a stage seeds object' do
          seeds = pipeline.stage_seeds

          expect(seeds.size).to eq 2
          expect(seeds.first.attributes[:name]).to eq 'test'
          expect(seeds.second.attributes[:name]).to eq 'deploy'
          expect(seeds.dig(0, 0, :name)).to eq 'rspec'
          expect(seeds.dig(0, 1, :name)).to eq 'spinach'
          expect(seeds.dig(1, 0, :name)).to eq 'production'
        end
      end

      context 'when refs policy is specified' do
        let(:pipeline) do
          build(:ci_pipeline, ref: 'feature', tag: true, config: config)
        end

        let(:config) do
          { production: { stage: 'deploy', script: 'cap prod', only: ['master'] },
            spinach: { stage: 'test', script: 'spinach', only: ['tags'] } }
        end

        it 'returns stage seeds only assigned to master to master' do
          seeds = pipeline.stage_seeds

          expect(seeds.size).to eq 1
          expect(seeds.first.attributes[:name]).to eq 'test'
          expect(seeds.dig(0, 0, :name)).to eq 'spinach'
        end
      end

      context 'when source policy is specified' do
        let(:pipeline) { build(:ci_pipeline, source: :schedule, config: config) }

        let(:config) do
          { production: { stage: 'deploy', script: 'cap prod', only: ['triggers'] },
            spinach: { stage: 'test', script: 'spinach', only: ['schedules'] } }
        end

        it 'returns stage seeds only assigned to schedules' do
          seeds = pipeline.stage_seeds

          expect(seeds.size).to eq 1
          expect(seeds.first.attributes[:name]).to eq 'test'
          expect(seeds.dig(0, 0, :name)).to eq 'spinach'
        end
      end

      context 'when kubernetes policy is specified' do
        let(:config) do
          {
            spinach: { stage: 'test', script: 'spinach' },
            production: {
              stage: 'deploy',
              script: 'cap',
              only: { kubernetes: 'active' }
            }
          }
        end

        context 'when kubernetes is active' do
          shared_examples 'same behavior between KubernetesService and Platform::Kubernetes' do
            it 'returns seeds for kubernetes dependent job' do
              seeds = pipeline.stage_seeds

              expect(seeds.size).to eq 2
              expect(seeds.dig(0, 0, :name)).to eq 'spinach'
              expect(seeds.dig(1, 0, :name)).to eq 'production'
            end
          end

          context 'when user configured kubernetes from Integration > Kubernetes' do
            let(:project) { create(:kubernetes_project) }
            let(:pipeline) { build(:ci_pipeline, project: project, config: config) }

            it_behaves_like 'same behavior between KubernetesService and Platform::Kubernetes'
          end

          context 'when user configured kubernetes from CI/CD > Clusters' do
            let!(:cluster) { create(:cluster, :project, :provided_by_gcp) }
            let(:project) { cluster.project }
            let(:pipeline) { build(:ci_pipeline, project: project, config: config) }

            it_behaves_like 'same behavior between KubernetesService and Platform::Kubernetes'
          end
        end

        context 'when kubernetes is not active' do
          it 'does not return seeds for kubernetes dependent job' do
            seeds = pipeline.stage_seeds

            expect(seeds.size).to eq 1
            expect(seeds.dig(0, 0, :name)).to eq 'spinach'
          end
        end
      end

      context 'when variables policy is specified' do
        let(:config) do
          { unit: { script: 'minitest', only: { variables: ['$CI_PIPELINE_SOURCE'] } },
            feature: { script: 'spinach', only: { variables: ['$UNDEFINED'] } } }
        end

        it 'returns stage seeds only when variables expression is truthy' do
          seeds = pipeline.stage_seeds

          expect(seeds.size).to eq 1
          expect(seeds.dig(0, 0, :name)).to eq 'unit'
        end
      end
    end

    describe '#seeds_size' do
      context 'when refs policy is specified' do
        let(:config) do
          { production: { stage: 'deploy', script: 'cap prod', only: ['master'] },
            spinach: { stage: 'test', script: 'spinach', only: ['tags'] } }
        end

        let(:pipeline) do
          build(:ci_pipeline, ref: 'feature', tag: true, config: config)
        end

        it 'returns real seeds size' do
          expect(pipeline.seeds_size).to eq 1
        end
      end
    end

    describe 'legacy stages' do
      before do
        create(:commit_status, pipeline: pipeline,
                               stage: 'build',
                               name: 'linux',
                               stage_idx: 0,
                               status: 'success')

        create(:commit_status, pipeline: pipeline,
                               stage: 'build',
                               name: 'mac',
                               stage_idx: 0,
                               status: 'failed')

        create(:commit_status, pipeline: pipeline,
                               stage: 'deploy',
                               name: 'staging',
                               stage_idx: 2,
                               status: 'running')

        create(:commit_status, pipeline: pipeline,
                               stage: 'test',
                               name: 'rspec',
                               stage_idx: 1,
                               status: 'success')
      end

      describe '#legacy_stages' do
        subject { pipeline.legacy_stages }

        context 'stages list' do
          it 'returns ordered list of stages' do
            expect(subject.map(&:name)).to eq(%w[build test deploy])
          end
        end

        context 'stages with statuses' do
          let(:statuses) do
            subject.map { |stage| [stage.name, stage.status] }
          end

          it 'returns list of stages with correct statuses' do
            expect(statuses).to eq([%w(build failed),
                                    %w(test success),
                                    %w(deploy running)])
          end

          context 'when commit status is retried' do
            before do
              create(:commit_status, pipeline: pipeline,
                                     stage: 'build',
                                     name: 'mac',
                                     stage_idx: 0,
                                     status: 'success')

              pipeline.process!
            end

            it 'ignores the previous state' do
              expect(statuses).to eq([%w(build success),
                                      %w(test success),
                                      %w(deploy running)])
            end
          end
        end

        context 'when there is a stage with warnings' do
          before do
            create(:commit_status, pipeline: pipeline,
                                   stage: 'deploy',
                                   name: 'prod:2',
                                   stage_idx: 2,
                                   status: 'failed',
                                   allow_failure: true)
          end

          it 'populates stage with correct number of warnings' do
            deploy_stage = pipeline.legacy_stages.third

            expect(deploy_stage).not_to receive(:statuses)
            expect(deploy_stage).to have_warnings
          end
        end
      end

      describe '#stages_count' do
        it 'returns a valid number of stages' do
          expect(pipeline.stages_count).to eq(3)
        end
      end

      describe '#stages_names' do
        it 'returns a valid names of stages' do
          expect(pipeline.stages_names).to eq(%w(build test deploy))
        end
      end
    end

    describe '#legacy_stage' do
      subject { pipeline.legacy_stage('test') }

      context 'with status in stage' do
        before do
          create(:commit_status, pipeline: pipeline, stage: 'test')
        end

        it { expect(subject).to be_a Ci::LegacyStage }
        it { expect(subject.name).to eq 'test' }
        it { expect(subject.statuses).not_to be_empty }
      end

      context 'without status in stage' do
        before do
          create(:commit_status, pipeline: pipeline, stage: 'build')
        end

        it 'return stage object' do
          is_expected.to be_nil
        end
      end
    end

    describe '#stages' do
      before do
        create(:ci_stage_entity, project: project,
                                 pipeline: pipeline,
                                 name: 'build')
      end

      it 'returns persisted stages' do
        expect(pipeline.stages).not_to be_empty
        expect(pipeline.stages).to all(be_persisted)
      end
    end

    describe '#ordered_stages' do
      before do
        create(:ci_stage_entity, project: project,
                                 pipeline: pipeline,
                                 position: 4,
                                 name: 'deploy')

        create(:ci_build, project: project,
                          pipeline: pipeline,
                          stage: 'test',
                          stage_idx: 3,
                          name: 'test')

        create(:ci_build, project: project,
                          pipeline: pipeline,
                          stage: 'build',
                          stage_idx: 2,
                          name: 'build')

        create(:ci_stage_entity, project: project,
                                 pipeline: pipeline,
                                 position: 1,
                                 name: 'sanity')

        create(:ci_stage_entity, project: project,
                                 pipeline: pipeline,
                                 position: 5,
                                 name: 'cleanup')
      end

      subject { pipeline.ordered_stages }

      context 'when using legacy stages' do
        before do
          stub_feature_flags(ci_pipeline_persisted_stages: false)
        end

        it 'returns legacy stages in valid order' do
          expect(subject.map(&:name)).to eq %w[build test]
        end
      end

      context 'when using persisted stages' do
        before do
          stub_feature_flags(ci_pipeline_persisted_stages: true)
        end

        context 'when pipelines is not complete' do
          it 'still returns legacy stages' do
            expect(subject).to all(be_a Ci::LegacyStage)
            expect(subject.map(&:name)).to eq %w[build test]
          end
        end

        context 'when pipeline is complete' do
          before do
            pipeline.succeed!
          end

          it 'returns stages in valid order' do
            expect(subject).to all(be_a Ci::Stage)
            expect(subject.map(&:name))
              .to eq %w[sanity build test deploy cleanup]
          end
        end
      end
    end
  end

  describe 'state machine' do
    let(:current) { Time.now.change(usec: 0) }
    let(:build) { create_build('build1', queued_at: 0) }
    let(:build_b) { create_build('build2', queued_at: 0) }
    let(:build_c) { create_build('build3', queued_at: 0) }

    describe '#duration' do
      context 'when multiple builds are finished' do
        before do
          travel_to(current + 30) do
            build.run!
            build.success!
            build_b.run!
            build_c.run!
          end

          travel_to(current + 40) do
            build_b.drop!
          end

          travel_to(current + 70) do
            build_c.success!
          end
        end

        it 'matches sum of builds duration' do
          pipeline.reload

          expect(pipeline.duration).to eq(40)
        end
      end

      context 'when pipeline becomes blocked' do
        let!(:build) { create_build('build:1') }
        let!(:action) { create_build('manual:action', :manual) }

        before do
          travel_to(current + 1.minute) do
            build.run!
          end

          travel_to(current + 5.minutes) do
            build.success!
          end
        end

        it 'recalculates pipeline duration' do
          pipeline.reload

          expect(pipeline).to be_manual
          expect(pipeline.duration).to eq 4.minutes
        end
      end
    end

    describe '#started_at' do
      it 'updates on transitioning to running' do
        build.run

        expect(pipeline.reload.started_at).not_to be_nil
      end

      it 'does not update on transitioning to success' do
        build.success

        expect(pipeline.reload.started_at).to be_nil
      end
    end

    describe '#finished_at' do
      it 'updates on transitioning to success' do
        build.success

        expect(pipeline.reload.finished_at).not_to be_nil
      end

      it 'does not update on transitioning to running' do
        build.run

        expect(pipeline.reload.finished_at).to be_nil
      end
    end

    describe 'merge request metrics' do
      let(:project) { create(:project, :repository) }
      let(:pipeline) { FactoryBot.create(:ci_empty_pipeline, status: 'created', project: project, ref: 'master', sha: project.repository.commit('master').id) }
      let!(:merge_request) { create(:merge_request, source_project: project, source_branch: pipeline.ref) }

      before do
        expect(PipelineMetricsWorker).to receive(:perform_async).with(pipeline.id)
      end

      context 'when transitioning to running' do
        it 'schedules metrics workers' do
          pipeline.run
        end
      end

      context 'when transitioning to success' do
        it 'schedules metrics workers' do
          pipeline.succeed
        end
      end
    end

    describe 'pipeline caching' do
      it 'performs ExpirePipelinesCacheWorker' do
        expect(ExpirePipelineCacheWorker).to receive(:perform_async).with(pipeline.id)

        pipeline.cancel
      end
    end

    def create_build(name, *traits, queued_at: current, started_from: 0, **opts)
      create(:ci_build, *traits,
             name: name,
             pipeline: pipeline,
             queued_at: queued_at,
             started_at: queued_at + started_from,
             **opts)
    end
  end

  describe '#branch?' do
    subject { pipeline.branch? }

    context 'when ref is not a tag' do
      before do
        pipeline.tag = false
      end

      it 'return true' do
        is_expected.to be_truthy
      end

      context 'when source is merge request' do
        let(:pipeline) do
          create(:ci_pipeline, source: :merge_request, merge_request: merge_request)
        end

        let(:merge_request) do
          create(:merge_request,
                 source_project: project,
                 source_branch: 'feature',
                 target_project: project,
                 target_branch: 'master')
        end

        it 'returns false' do
          is_expected.to be_falsey
        end
      end
    end

    context 'when ref is a tag' do
      before do
        pipeline.tag = true
      end

      it 'return false' do
        is_expected.to be_falsey
      end
    end
  end

  describe '#git_ref' do
    subject { pipeline.send(:git_ref) }

    context 'when ref is branch' do
      let(:pipeline) { create(:ci_pipeline, tag: false) }

      it 'returns branch ref' do
        is_expected.to eq(Gitlab::Git::BRANCH_REF_PREFIX + pipeline.ref.to_s)
      end
    end

    context 'when ref is tag' do
      let(:pipeline) { create(:ci_pipeline, tag: true) }

      it 'returns branch ref' do
        is_expected.to eq(Gitlab::Git::TAG_REF_PREFIX + pipeline.ref.to_s)
      end
    end

    context 'when ref is merge request' do
      let(:pipeline) do
        create(:ci_pipeline,
               source: :merge_request,
               merge_request: merge_request)
      end

      let(:merge_request) do
        create(:merge_request,
               source_project: project,
               source_branch: 'feature',
               target_project: project,
               target_branch: 'master')
      end

      it 'returns branch ref' do
        is_expected.to eq(Gitlab::Git::BRANCH_REF_PREFIX + pipeline.ref.to_s)
      end
    end
  end

  describe 'ref_exists?' do
    context 'when repository exists' do
      using RSpec::Parameterized::TableSyntax

      let(:project) { create(:project, :repository) }

      where(:tag, :ref, :result) do
        false | 'master'              | true
        false | 'non-existent-branch' | false
        true  | 'v1.1.0'              | true
        true  | 'non-existent-tag'    | false
      end

      with_them do
        let(:pipeline) do
          create(:ci_empty_pipeline, project: project, tag: tag, ref: ref)
        end

        it "correctly detects ref" do
          expect(pipeline.ref_exists?).to be result
        end
      end
    end

    context 'when repository does not exist' do
      let(:pipeline) do
        create(:ci_empty_pipeline, project: project, ref: 'master')
      end

      it 'always returns false' do
        expect(pipeline.ref_exists?).to eq false
      end
    end
  end

  context 'with non-empty project' do
    let(:project) { create(:project, :repository) }

    let(:pipeline) do
      create(:ci_pipeline,
             project: project,
             ref: project.default_branch,
             sha: project.commit.sha)
    end

    describe '#latest?' do
      context 'with latest sha' do
        it 'returns true' do
          expect(pipeline).to be_latest
        end
      end

      context 'with not latest sha' do
        before do
          pipeline.update(
            sha: project.commit("#{project.default_branch}~1").sha)
        end

        it 'returns false' do
          expect(pipeline).not_to be_latest
        end
      end
    end
  end

  describe '#manual_actions' do
    subject { pipeline.manual_actions }

    it 'when none defined' do
      is_expected.to be_empty
    end

    context 'when action defined' do
      let!(:manual) { create(:ci_build, :manual, pipeline: pipeline, name: 'deploy') }

      it 'returns one action' do
        is_expected.to contain_exactly(manual)
      end

      context 'there are multiple of the same name' do
        let!(:manual2) { create(:ci_build, :manual, pipeline: pipeline, name: 'deploy') }

        before do
          manual.update(retried: true)
        end

        it 'returns latest one' do
          is_expected.to contain_exactly(manual2)
        end
      end
    end
  end

  describe '#branch_updated?' do
    context 'when pipeline has before SHA' do
      before do
        pipeline.update_column(:before_sha, 'a1b2c3d4')
      end

      it 'runs on a branch update push' do
        expect(pipeline.before_sha).not_to be Gitlab::Git::BLANK_SHA
        expect(pipeline.branch_updated?).to be true
      end
    end

    context 'when pipeline does not have before SHA' do
      before do
        pipeline.update_column(:before_sha, Gitlab::Git::BLANK_SHA)
      end

      it 'does not run on a branch updating push' do
        expect(pipeline.branch_updated?).to be false
      end
    end
  end

  describe '#modified_paths' do
    context 'when old and new revisions are set' do
      let(:project) { create(:project, :repository) }

      before do
        pipeline.update(before_sha: '1234abcd', sha: '2345bcde')
      end

      it 'fetches stats for changes between commits' do
        expect(project.repository)
          .to receive(:diff_stats).with('1234abcd', '2345bcde')
          .and_call_original

        pipeline.modified_paths
      end
    end

    context 'when either old or new revision is missing' do
      before do
        pipeline.update_column(:before_sha, Gitlab::Git::BLANK_SHA)
      end

      it 'raises an error' do
        expect { pipeline.modified_paths }.to raise_error(ArgumentError)
      end
    end
  end

  describe '#has_kubernetes_active?' do
    context 'when kubernetes is active' do
      shared_examples 'same behavior between KubernetesService and Platform::Kubernetes' do
        it 'returns true' do
          expect(pipeline).to have_kubernetes_active
        end
      end

      context 'when user configured kubernetes from Integration > Kubernetes' do
        let(:project) { create(:kubernetes_project) }

        it_behaves_like 'same behavior between KubernetesService and Platform::Kubernetes'
      end

      context 'when user configured kubernetes from CI/CD > Clusters' do
        let!(:cluster) { create(:cluster, :project, :provided_by_gcp) }
        let(:project) { cluster.project }

        it_behaves_like 'same behavior between KubernetesService and Platform::Kubernetes'
      end
    end

    context 'when kubernetes is not active' do
      it 'returns false' do
        expect(pipeline).not_to have_kubernetes_active
      end
    end
  end

  describe '#has_warnings?' do
    subject { pipeline.has_warnings? }

    context 'build which is allowed to fail fails' do
      before do
        create :ci_build, :success, pipeline: pipeline, name: 'rspec'
        create :ci_build, :allowed_to_fail, :failed, pipeline: pipeline, name: 'rubocop'
      end

      it 'returns true' do
        is_expected.to be_truthy
      end
    end

    context 'build which is allowed to fail succeeds' do
      before do
        create :ci_build, :success, pipeline: pipeline, name: 'rspec'
        create :ci_build, :allowed_to_fail, :success, pipeline: pipeline, name: 'rubocop'
      end

      it 'returns false' do
        is_expected.to be_falsey
      end
    end

    context 'build is retried and succeeds' do
      before do
        create :ci_build, :success, pipeline: pipeline, name: 'rubocop'
        create :ci_build, :failed, pipeline: pipeline, name: 'rspec'
        create :ci_build, :success, pipeline: pipeline, name: 'rspec'
      end

      it 'returns false' do
        is_expected.to be_falsey
      end
    end
  end

  describe '#number_of_warnings' do
    it 'returns the number of warnings' do
      create(:ci_build, :allowed_to_fail, :failed, pipeline: pipeline, name: 'rubocop')

      expect(pipeline.number_of_warnings).to eq(1)
    end

    it 'supports eager loading of the number of warnings' do
      pipeline2 = create(:ci_empty_pipeline, status: :created, project: project)

      create(:ci_build, :allowed_to_fail, :failed, pipeline: pipeline, name: 'rubocop')
      create(:ci_build, :allowed_to_fail, :failed, pipeline: pipeline2, name: 'rubocop')

      pipelines = project.ci_pipelines.to_a

      pipelines.each(&:number_of_warnings)

      # To run the queries we need to actually use the lazy objects, which we do
      # by just sending "to_i" to them.
      amount = ActiveRecord::QueryRecorder
        .new { pipelines.each { |p| p.number_of_warnings.to_i } }
        .count

      expect(amount).to eq(1)
    end
  end

  shared_context 'with some outdated pipelines' do
    before do
      create_pipeline(:canceled, 'ref', 'A', project)
      create_pipeline(:success, 'ref', 'A', project)
      create_pipeline(:failed, 'ref', 'B', project)
      create_pipeline(:skipped, 'feature', 'C', project)
    end

    def create_pipeline(status, ref, sha, project)
      create(
        :ci_empty_pipeline,
        status: status,
        ref: ref,
        sha: sha,
        project: project
      )
    end
  end

  describe '.newest_first' do
    include_context 'with some outdated pipelines'

    it 'returns the pipelines from new to old' do
      expect(described_class.newest_first.pluck(:status))
        .to eq(%w[skipped failed success canceled])
    end

    it 'searches limited backlog' do
      expect(described_class.newest_first(limit: 1).pluck(:status))
        .to eq(%w[skipped])
    end
  end

  describe '.latest_status' do
    include_context 'with some outdated pipelines'

    context 'when no ref is specified' do
      it 'returns the status of the latest pipeline' do
        expect(described_class.latest_status).to eq('skipped')
      end
    end

    context 'when ref is specified' do
      it 'returns the status of the latest pipeline for the given ref' do
        expect(described_class.latest_status('ref')).to eq('failed')
      end
    end
  end

  describe '.latest_successful_for' do
    include_context 'with some outdated pipelines'

    let!(:latest_successful_pipeline) do
      create_pipeline(:success, 'ref', 'D', project)
    end

    it 'returns the latest successful pipeline' do
      expect(described_class.latest_successful_for('ref'))
        .to eq(latest_successful_pipeline)
    end
  end

  describe '.latest_successful_for_refs' do
    include_context 'with some outdated pipelines'

    let!(:latest_successful_pipeline1) do
      create_pipeline(:success, 'ref1', 'D', project)
    end

    let!(:latest_successful_pipeline2) do
      create_pipeline(:success, 'ref2', 'D', project)
    end

    it 'returns the latest successful pipeline for both refs' do
      refs = %w(ref1 ref2 ref3)

      expect(described_class.latest_successful_for_refs(refs)).to eq({ 'ref1' => latest_successful_pipeline1, 'ref2' => latest_successful_pipeline2 })
    end
  end

  describe '.latest_status_per_commit' do
    let(:project) { create(:project) }

    before do
      pairs = [
        %w[success ref1 123],
        %w[manual master 123],
        %w[failed ref 456]
      ]

      pairs.each do |(status, ref, sha)|
        create(
          :ci_empty_pipeline,
          status: status,
          ref: ref,
          sha: sha,
          project: project
        )
      end
    end

    context 'without a ref' do
      it 'returns a Hash containing the latest status per commit for all refs' do
        expect(described_class.latest_status_per_commit(%w[123 456]))
          .to eq({ '123' => 'manual', '456' => 'failed' })
      end

      it 'only includes the status of the given commit SHAs' do
        expect(described_class.latest_status_per_commit(%w[123]))
          .to eq({ '123' => 'manual' })
      end

      context 'when there are two pipelines for a ref and SHA' do
        it 'returns the status of the latest pipeline' do
          create(
            :ci_empty_pipeline,
            status: 'failed',
            ref: 'master',
            sha: '123',
            project: project
          )

          expect(described_class.latest_status_per_commit(%w[123]))
            .to eq({ '123' => 'failed' })
        end
      end
    end

    context 'with a ref' do
      it 'only includes the pipelines for the given ref' do
        expect(described_class.latest_status_per_commit(%w[123 456], 'master'))
          .to eq({ '123' => 'manual' })
      end
    end
  end

  describe '.latest_successful_ids_per_project' do
    let(:projects) { create_list(:project, 2) }
    let!(:pipeline1) { create(:ci_pipeline, :success, project: projects[0]) }
    let!(:pipeline2) { create(:ci_pipeline, :success, project: projects[0]) }
    let!(:pipeline3) { create(:ci_pipeline, :failed, project: projects[0]) }
    let!(:pipeline4) { create(:ci_pipeline, :success, project: projects[1]) }

    it 'returns expected pipeline ids' do
      expect(described_class.latest_successful_ids_per_project)
        .to contain_exactly(pipeline2, pipeline4)
    end
  end

  describe '.internal_sources' do
    subject { described_class.internal_sources }

    it { is_expected.to be_an(Array) }
  end

  describe '#status' do
    let(:build) do
      create(:ci_build, :created, pipeline: pipeline, name: 'test')
    end

    subject { pipeline.reload.status }

    context 'on queuing' do
      before do
        build.enqueue
      end

      it { is_expected.to eq('pending') }
    end

    context 'on run' do
      before do
        build.enqueue
        build.run
      end

      it { is_expected.to eq('running') }
    end

    context 'on drop' do
      before do
        build.drop
      end

      it { is_expected.to eq('failed') }
    end

    context 'on success' do
      before do
        build.success
      end

      it { is_expected.to eq('success') }
    end

    context 'on cancel' do
      before do
        build.cancel
      end

      context 'when build is pending' do
        let(:build) do
          create(:ci_build, :pending, pipeline: pipeline)
        end

        it { is_expected.to eq('canceled') }
      end
    end

    context 'on failure and build retry' do
      before do
        stub_not_protect_default_branch

        build.drop
        project.add_developer(user)

        Ci::Build.retry(build, user)
      end

      # We are changing a state: created > failed > running
      # Instead of: created > failed > pending
      # Since the pipeline already run, so it should not be pending anymore

      it { is_expected.to eq('running') }
    end
  end

  describe '#ci_yaml_file_path' do
    subject { pipeline.ci_yaml_file_path }

    %i[unknown_source repository_source].each do |source|
      context source.to_s do
        before do
          pipeline.config_source = described_class.config_sources.fetch(source)
        end

        it 'returns the path from project' do
          allow(pipeline.project).to receive(:ci_config_path) { 'custom/path' }

          is_expected.to eq('custom/path')
        end

        it 'returns default when custom path is nil' do
          allow(pipeline.project).to receive(:ci_config_path) { nil }

          is_expected.to eq('.gitlab-ci.yml')
        end

        it 'returns default when custom path is empty' do
          allow(pipeline.project).to receive(:ci_config_path) { '' }

          is_expected.to eq('.gitlab-ci.yml')
        end
      end
    end

    context 'when pipeline is for auto-devops' do
      before do
        pipeline.config_source = 'auto_devops_source'
      end

      it 'does not return config file' do
        is_expected.to be_nil
      end
    end
  end

  describe '#set_config_source' do
    context 'when pipelines does not contain needed data and auto devops is disabled' do
      before do
        stub_application_setting(auto_devops_enabled: false)
      end

      it 'defines source to be unknown' do
        pipeline.set_config_source

        expect(pipeline).to be_unknown_source
      end
    end

    context 'when pipeline contains all needed data' do
      let(:pipeline) do
        create(:ci_pipeline, project: project,
                             sha: '1234',
                             ref: 'master',
                             source: :push)
      end

      context 'when the repository has a config file' do
        before do
          allow(project.repository).to receive(:gitlab_ci_yml_for)
            .and_return('config')
        end

        it 'defines source to be from repository' do
          pipeline.set_config_source

          expect(pipeline).to be_repository_source
        end

        context 'when loading an object' do
          let(:new_pipeline) { Ci::Pipeline.find(pipeline.id) }

          it 'does not redefine the source' do
            # force to overwrite the source
            pipeline.unknown_source!

            expect(new_pipeline).to be_unknown_source
          end
        end
      end

      context 'when the repository does not have a config file' do
        let(:implied_yml) { Gitlab::Template::GitlabCiYmlTemplate.find('Auto-DevOps').content }

        context 'auto devops enabled' do
          before do
            allow(project).to receive(:ci_config_path) { 'custom' }
          end

          it 'defines source to be auto devops' do
            pipeline.set_config_source

            expect(pipeline).to be_auto_devops_source
          end
        end
      end
    end
  end

  describe '#ci_yaml_file' do
    let(:implied_yml) { Gitlab::Template::GitlabCiYmlTemplate.find('Auto-DevOps').content }

    context 'the source is unknown' do
      before do
        pipeline.unknown_source!
      end

      it 'returns the configuration if found' do
        allow(pipeline.project.repository).to receive(:gitlab_ci_yml_for)
          .and_return('config')

        expect(pipeline.ci_yaml_file).to be_a(String)
        expect(pipeline.ci_yaml_file).not_to eq(implied_yml)
        expect(pipeline.yaml_errors).to be_nil
      end

      it 'sets yaml errors if not found' do
        expect(pipeline.ci_yaml_file).to be_nil
        expect(pipeline.yaml_errors)
            .to start_with('Failed to load CI/CD config file')
      end
    end

    context 'the source is the repository' do
      before do
        pipeline.repository_source!
      end

      it 'returns the configuration if found' do
        allow(pipeline.project.repository).to receive(:gitlab_ci_yml_for)
          .and_return('config')

        expect(pipeline.ci_yaml_file).to be_a(String)
        expect(pipeline.ci_yaml_file).not_to eq(implied_yml)
        expect(pipeline.yaml_errors).to be_nil
      end
    end

    context 'when the source is auto_devops_source' do
      before do
        stub_application_setting(auto_devops_enabled: true)
        pipeline.auto_devops_source!
      end

      it 'finds the implied config' do
        expect(pipeline.ci_yaml_file).to eq(implied_yml)
        expect(pipeline.yaml_errors).to be_nil
      end
    end
  end

  describe '#update_status' do
    context 'when pipeline is empty' do
      it 'updates does not change pipeline status' do
        expect(pipeline.statuses.latest.status).to be_nil

        expect { pipeline.update_status }
          .to change { pipeline.reload.status }.to 'skipped'
      end
    end

    context 'when updating status to pending' do
      before do
        allow(pipeline)
          .to receive_message_chain(:statuses, :latest, :status)
          .and_return(:running)
      end

      it 'updates pipeline status to running' do
        expect { pipeline.update_status }
          .to change { pipeline.reload.status }.to 'running'
      end
    end

    context 'when updating status to scheduled' do
      before do
        allow(pipeline)
          .to receive_message_chain(:statuses, :latest, :status)
          .and_return(:scheduled)
      end

      it 'updates pipeline status to scheduled' do
        expect { pipeline.update_status }
          .to change { pipeline.reload.status }.to 'scheduled'
      end
    end

    context 'when statuses status was not recognized' do
      before do
        allow(pipeline)
          .to receive(:latest_builds_status)
          .and_return(:unknown)
      end

      it 'raises an exception' do
        expect { pipeline.update_status }
          .to raise_error(HasStatus::UnknownStatusError)
      end
    end
  end

  describe '#detailed_status' do
    subject { pipeline.detailed_status(user) }

    context 'when pipeline is created' do
      let(:pipeline) { create(:ci_pipeline, status: :created) }

      it 'returns detailed status for created pipeline' do
        expect(subject.text).to eq 'created'
      end
    end

    context 'when pipeline is pending' do
      let(:pipeline) { create(:ci_pipeline, status: :pending) }

      it 'returns detailed status for pending pipeline' do
        expect(subject.text).to eq 'pending'
      end
    end

    context 'when pipeline is running' do
      let(:pipeline) { create(:ci_pipeline, status: :running) }

      it 'returns detailed status for running pipeline' do
        expect(subject.text).to eq 'running'
      end
    end

    context 'when pipeline is successful' do
      let(:pipeline) { create(:ci_pipeline, status: :success) }

      it 'returns detailed status for successful pipeline' do
        expect(subject.text).to eq 'passed'
      end
    end

    context 'when pipeline is failed' do
      let(:pipeline) { create(:ci_pipeline, status: :failed) }

      it 'returns detailed status for failed pipeline' do
        expect(subject.text).to eq 'failed'
      end
    end

    context 'when pipeline is canceled' do
      let(:pipeline) { create(:ci_pipeline, status: :canceled) }

      it 'returns detailed status for canceled pipeline' do
        expect(subject.text).to eq 'canceled'
      end
    end

    context 'when pipeline is skipped' do
      let(:pipeline) { create(:ci_pipeline, status: :skipped) }

      it 'returns detailed status for skipped pipeline' do
        expect(subject.text).to eq 'skipped'
      end
    end

    context 'when pipeline is blocked' do
      let(:pipeline) { create(:ci_pipeline, status: :manual) }

      it 'returns detailed status for blocked pipeline' do
        expect(subject.text).to eq 'blocked'
      end
    end

    context 'when pipeline is successful but with warnings' do
      let(:pipeline) { create(:ci_pipeline, status: :success) }

      before do
        create(:ci_build, :allowed_to_fail, :failed, pipeline: pipeline)
      end

      it 'retruns detailed status for successful pipeline with warnings' do
        expect(subject.label).to eq 'passed with warnings'
      end
    end
  end

  describe '#cancelable?' do
    %i[created running pending].each do |status0|
      context "when there is a build #{status0}" do
        before do
          create(:ci_build, status0, pipeline: pipeline)
        end

        it 'is cancelable' do
          expect(pipeline.cancelable?).to be_truthy
        end
      end

      context "when there is an external job #{status0}" do
        before do
          create(:generic_commit_status, status0, pipeline: pipeline)
        end

        it 'is cancelable' do
          expect(pipeline.cancelable?).to be_truthy
        end
      end

      %i[success failed canceled].each do |status1|
        context "when there are generic_commit_status jobs for #{status0} and #{status1}" do
          before do
            create(:generic_commit_status, status0, pipeline: pipeline)
            create(:generic_commit_status, status1, pipeline: pipeline)
          end

          it 'is cancelable' do
            expect(pipeline.cancelable?).to be_truthy
          end
        end

        context "when there are generic_commit_status and ci_build jobs for #{status0} and #{status1}" do
          before do
            create(:generic_commit_status, status0, pipeline: pipeline)
            create(:ci_build, status1, pipeline: pipeline)
          end

          it 'is cancelable' do
            expect(pipeline.cancelable?).to be_truthy
          end
        end

        context "when there are ci_build jobs for #{status0} and #{status1}" do
          before do
            create(:ci_build, status0, pipeline: pipeline)
            create(:ci_build, status1, pipeline: pipeline)
          end

          it 'is cancelable' do
            expect(pipeline.cancelable?).to be_truthy
          end
        end
      end
    end

    %i[success failed canceled].each do |status|
      context "when there is a build #{status}" do
        before do
          create(:ci_build, status, pipeline: pipeline)
        end

        it 'is not cancelable' do
          expect(pipeline.cancelable?).to be_falsey
        end
      end

      context "when there is an external job #{status}" do
        before do
          create(:generic_commit_status, status, pipeline: pipeline)
        end

        it 'is not cancelable' do
          expect(pipeline.cancelable?).to be_falsey
        end
      end
    end

    context 'when there is a manual action present in the pipeline' do
      before do
        create(:ci_build, :manual, pipeline: pipeline)
      end

      it 'is not cancelable' do
        expect(pipeline).not_to be_cancelable
      end
    end
  end

  describe '#cancel_running' do
    let(:latest_status) { pipeline.statuses.pluck(:status) }

    context 'when there is a running external job and a regular job' do
      before do
        create(:ci_build, :running, pipeline: pipeline)
        create(:generic_commit_status, :running, pipeline: pipeline)

        pipeline.cancel_running
      end

      it 'cancels both jobs' do
        expect(latest_status).to contain_exactly('canceled', 'canceled')
      end
    end

    context 'when jobs are in different stages' do
      before do
        create(:ci_build, :running, stage_idx: 0, pipeline: pipeline)
        create(:ci_build, :running, stage_idx: 1, pipeline: pipeline)

        pipeline.cancel_running
      end

      it 'cancels both jobs' do
        expect(latest_status).to contain_exactly('canceled', 'canceled')
      end
    end

    context 'when there are created builds present in the pipeline' do
      before do
        create(:ci_build, :running, stage_idx: 0, pipeline: pipeline)
        create(:ci_build, :created, stage_idx: 1, pipeline: pipeline)

        pipeline.cancel_running
      end

      it 'cancels created builds' do
        expect(latest_status).to eq %w(canceled canceled)
      end
    end
  end

  describe '#retry_failed' do
    let(:latest_status) { pipeline.statuses.latest.pluck(:status) }

    before do
      stub_not_protect_default_branch

      project.add_developer(user)
    end

    context 'when there is a failed build and failed external status' do
      before do
        create(:ci_build, :failed, name: 'build', pipeline: pipeline)
        create(:generic_commit_status, :failed, name: 'jenkins', pipeline: pipeline)

        pipeline.retry_failed(user)
      end

      it 'retries only build' do
        expect(latest_status).to contain_exactly('pending', 'failed')
      end
    end

    context 'when builds are in different stages' do
      before do
        create(:ci_build, :failed, name: 'build', stage_idx: 0, pipeline: pipeline)
        create(:ci_build, :failed, name: 'jenkins', stage_idx: 1, pipeline: pipeline)

        pipeline.retry_failed(user)
      end

      it 'retries both builds' do
        expect(latest_status).to contain_exactly('pending', 'created')
      end
    end

    context 'when there are canceled and failed' do
      before do
        create(:ci_build, :failed, name: 'build', stage_idx: 0, pipeline: pipeline)
        create(:ci_build, :canceled, name: 'jenkins', stage_idx: 1, pipeline: pipeline)

        pipeline.retry_failed(user)
      end

      it 'retries both builds' do
        expect(latest_status).to contain_exactly('pending', 'created')
      end
    end
  end

  describe '#execute_hooks' do
    let!(:build_a) { create_build('a', 0) }
    let!(:build_b) { create_build('b', 0) }

    let!(:hook) do
      create(:project_hook, project: project, pipeline_events: enabled)
    end

    before do
      WebHookWorker.drain
    end

    context 'with pipeline hooks enabled' do
      let(:enabled) { true }

      before do
        WebMock.stub_request(:post, hook.url)
      end

      context 'with multiple builds' do
        context 'when build is queued' do
          before do
            build_a.enqueue
            build_b.enqueue
          end

          it 'receives a pending event once' do
            expect(WebMock).to have_requested_pipeline_hook('pending').once
          end
        end

        context 'when build is run' do
          before do
            build_a.enqueue
            build_a.run
            build_b.enqueue
            build_b.run
          end

          it 'receives a running event once' do
            expect(WebMock).to have_requested_pipeline_hook('running').once
          end
        end

        context 'when all builds succeed' do
          before do
            build_a.success

            # We have to reload build_b as this is in next stage and it gets triggered by PipelineProcessWorker
            build_b.reload.success
          end

          it 'receives a success event once' do
            expect(WebMock).to have_requested_pipeline_hook('success').once
          end
        end

        context 'when stage one failed' do
          let!(:build_b) { create_build('b', 1) }

          before do
            build_a.drop
          end

          it 'receives a failed event once' do
            expect(WebMock).to have_requested_pipeline_hook('failed').once
          end
        end

        def have_requested_pipeline_hook(status)
          have_requested(:post, hook.url).with do |req|
            json_body = JSON.parse(req.body)
            json_body['object_attributes']['status'] == status &&
              json_body['builds'].length == 2
          end
        end
      end
    end

    context 'with pipeline hooks disabled' do
      let(:enabled) { false }

      before do
        build_a.enqueue
        build_b.enqueue
      end

      it 'did not execute pipeline_hook after touched' do
        expect(WebMock).not_to have_requested(:post, hook.url)
      end
    end

    def create_build(name, stage_idx)
      create(:ci_build,
             :created,
             pipeline: pipeline,
             name: name,
             stage_idx: stage_idx)
    end
  end

  describe "#merge_requests" do
    let(:project) { create(:project) }
    let(:pipeline) { create(:ci_empty_pipeline, status: 'created', project: project, ref: 'master', sha: 'a288a022a53a5a944fae87bcec6efc87b7061808') }

    it "returns merge requests whose `diff_head_sha` matches the pipeline's SHA" do
      allow_any_instance_of(MergeRequest).to receive(:diff_head_sha) { 'a288a022a53a5a944fae87bcec6efc87b7061808' }
      merge_request = create(:merge_request, source_project: project, head_pipeline: pipeline, source_branch: pipeline.ref)

      expect(pipeline.merge_requests).to eq([merge_request])
    end

    it "doesn't return merge requests whose source branch doesn't match the pipeline's ref" do
      create(:merge_request, source_project: project, source_branch: 'feature', target_branch: 'master')

      expect(pipeline.merge_requests).to be_empty
    end

    it "doesn't return merge requests whose `diff_head_sha` doesn't match the pipeline's SHA" do
      create(:merge_request, source_project: project, source_branch: pipeline.ref)
      allow_any_instance_of(MergeRequest).to receive(:diff_head_sha) { '97de212e80737a608d939f648d959671fb0a0142b' }

      expect(pipeline.merge_requests).to be_empty
    end
  end

  describe "#all_merge_requests" do
    let(:project) { create(:project) }
    let(:pipeline) { create(:ci_empty_pipeline, status: 'created', project: project, ref: 'master') }

    it "returns all merge requests having the same source branch" do
      merge_request = create(:merge_request, source_project: project, source_branch: pipeline.ref)

      expect(pipeline.all_merge_requests).to eq([merge_request])
    end

    it "doesn't return merge requests having a different source branch" do
      create(:merge_request, source_project: project, source_branch: 'feature', target_branch: 'master')

      expect(pipeline.all_merge_requests).to be_empty
    end

    context 'when there is a merge request pipeline' do
      let(:source_branch) { 'feature' }
      let(:target_branch) { 'master' }

      let!(:pipeline) do
        create(:ci_pipeline,
               source: :merge_request,
               project: project,
               ref: source_branch,
               merge_request: merge_request)
      end

      let(:merge_request) do
        create(:merge_request,
               source_project: project,
               source_branch: source_branch,
               target_project: project,
               target_branch: target_branch)
      end

      it 'returns an associated merge request' do
        expect(pipeline.all_merge_requests).to eq([merge_request])
      end

      context 'when there is another merge request pipeline that targets a different branch' do
        let(:target_branch_2) { 'merge-test' }

        let!(:pipeline_2) do
          create(:ci_pipeline,
                 source: :merge_request,
                 project: project,
                 ref: source_branch,
                 merge_request: merge_request_2)
        end

        let(:merge_request_2) do
          create(:merge_request,
                 source_project: project,
                 source_branch: source_branch,
                 target_project: project,
                 target_branch: target_branch_2)
        end

        it 'does not return an associated merge request' do
          expect(pipeline.all_merge_requests).not_to include(merge_request_2)
        end
      end
    end
  end

  describe '#stuck?' do
    before do
      create(:ci_build, :pending, pipeline: pipeline)
    end

    context 'when pipeline is stuck' do
      it 'is stuck' do
        expect(pipeline).to be_stuck
      end
    end

    context 'when pipeline is not stuck' do
      before do
        create(:ci_runner, :instance, :online)
      end

      it 'is not stuck' do
        expect(pipeline).not_to be_stuck
      end
    end
  end

  describe '#has_yaml_errors?' do
    context 'when pipeline has errors' do
      let(:pipeline) do
        create(:ci_pipeline, config: { rspec: nil })
      end

      it 'contains yaml errors' do
        expect(pipeline).to have_yaml_errors
      end
    end

    context 'when pipeline does not have errors' do
      let(:pipeline) do
        create(:ci_pipeline, config: { rspec: { script: 'rake test' } })
      end

      it 'does not contain yaml errors' do
        expect(pipeline).not_to have_yaml_errors
      end
    end
  end

  describe 'notifications when pipeline success or failed' do
    let(:project) { create(:project, :repository) }

    let(:pipeline) do
      create(:ci_pipeline,
             project: project,
             sha: project.commit('master').sha,
             user: create(:user))
    end

    before do
      project.add_developer(pipeline.user)

      pipeline.user.global_notification_setting
        .update(level: 'custom', failed_pipeline: true, success_pipeline: true)

      perform_enqueued_jobs do
        pipeline.enqueue
        pipeline.run
      end
    end

    shared_examples 'sending a notification' do
      it 'sends an email' do
        should_only_email(pipeline.user, kind: :bcc)
      end
    end

    shared_examples 'not sending any notification' do
      it 'does not send any email' do
        should_not_email_anyone
      end
    end

    context 'with success pipeline' do
      before do
        perform_enqueued_jobs do
          pipeline.succeed
        end
      end

      it_behaves_like 'sending a notification'
    end

    context 'with failed pipeline' do
      before do
        perform_enqueued_jobs do
          create(:ci_build, :failed, pipeline: pipeline)
          create(:generic_commit_status, :failed, pipeline: pipeline)

          pipeline.drop
        end
      end

      it_behaves_like 'sending a notification'
    end

    context 'with skipped pipeline' do
      before do
        perform_enqueued_jobs do
          pipeline.skip
        end
      end

      it_behaves_like 'not sending any notification'
    end

    context 'with cancelled pipeline' do
      before do
        perform_enqueued_jobs do
          pipeline.cancel
        end
      end

      it_behaves_like 'not sending any notification'
    end
  end

  describe '#latest_builds_with_artifacts' do
    let!(:pipeline) { create(:ci_pipeline, :success) }

    let!(:build) do
      create(:ci_build, :success, :artifacts, pipeline: pipeline)
    end

    it 'returns an Array' do
      expect(pipeline.latest_builds_with_artifacts).to be_an_instance_of(Array)
    end

    it 'returns the latest builds' do
      expect(pipeline.latest_builds_with_artifacts).to eq([build])
    end

    it 'memoizes the returned relation' do
      query_count = ActiveRecord::QueryRecorder
        .new { 2.times { pipeline.latest_builds_with_artifacts.to_a } }
        .count

      expect(query_count).to eq(1)
    end
  end

  describe '#has_test_reports?' do
    subject { pipeline.has_test_reports? }

    context 'when pipeline has builds with test reports' do
      before do
        create(:ci_build, :test_reports, pipeline: pipeline, project: project)
      end

      context 'when pipeline status is running' do
        let(:pipeline) { create(:ci_pipeline, :running, project: project) }

        it { is_expected.to be_falsey }
      end

      context 'when pipeline status is success' do
        let(:pipeline) { create(:ci_pipeline, :success, project: project) }

        it { is_expected.to be_truthy }
      end
    end

    context 'when pipeline does not have builds with test reports' do
      before do
        create(:ci_build, :artifacts, pipeline: pipeline, project: project)
      end

      let(:pipeline) { create(:ci_pipeline, :success, project: project) }

      it { is_expected.to be_falsey }
    end

    context 'when retried build has test reports' do
      before do
        create(:ci_build, :retried, :test_reports, pipeline: pipeline, project: project)
      end

      let(:pipeline) { create(:ci_pipeline, :success, project: project) }

      it { is_expected.to be_falsey }
    end
  end

  describe '#test_reports' do
    subject { pipeline.test_reports }

    context 'when pipeline has multiple builds with test reports' do
      let!(:build_rspec) { create(:ci_build, :success, name: 'rspec', pipeline: pipeline, project: project) }
      let!(:build_java) { create(:ci_build, :success, name: 'java', pipeline: pipeline, project: project) }

      before do
        create(:ci_job_artifact, :junit, job: build_rspec, project: project)
        create(:ci_job_artifact, :junit_with_ant, job: build_java, project: project)
      end

      it 'returns test reports with collected data' do
        expect(subject.total_count).to be(7)
        expect(subject.success_count).to be(5)
        expect(subject.failed_count).to be(2)
      end

      context 'when builds are retried' do
        let!(:build_rspec) { create(:ci_build, :retried, :success, name: 'rspec', pipeline: pipeline, project: project) }
        let!(:build_java) { create(:ci_build, :retried, :success, name: 'java', pipeline: pipeline, project: project) }

        it 'does not take retried builds into account' do
          expect(subject.total_count).to be(0)
          expect(subject.success_count).to be(0)
          expect(subject.failed_count).to be(0)
        end
      end
    end

    context 'when pipeline does not have any builds with test reports' do
      it 'returns empty test reports' do
        expect(subject.total_count).to be(0)
      end
    end
  end

  describe '#total_size' do
    let!(:build_job1) { create(:ci_build, pipeline: pipeline, stage_idx: 0) }
    let!(:build_job2) { create(:ci_build, pipeline: pipeline, stage_idx: 0) }
    let!(:test_job_failed_and_retried) { create(:ci_build, :failed, :retried, pipeline: pipeline, stage_idx: 1) }
    let!(:second_test_job) { create(:ci_build, pipeline: pipeline, stage_idx: 1) }
    let!(:deploy_job) { create(:ci_build, pipeline: pipeline, stage_idx: 2) }

    it 'returns all jobs (including failed and retried)' do
      expect(pipeline.total_size).to eq(5)
    end
  end

  describe '#status' do
    context 'when transitioning to failed' do
      context 'when pipeline has autodevops as source' do
        let(:pipeline) { create(:ci_pipeline, :running, :auto_devops_source) }

        it 'calls autodevops disable service' do
          expect(AutoDevops::DisableWorker).to receive(:perform_async).with(pipeline.id)

          pipeline.drop
        end
      end

      context 'when pipeline has other source' do
        let(:pipeline) { create(:ci_pipeline, :running, :repository_source) }

        it 'does not call auto devops disable service' do
          expect(AutoDevops::DisableWorker).not_to receive(:perform_async)

          pipeline.drop
        end
      end
    end
  end

  describe '#default_branch?' do
    let(:default_branch) { 'master'}

    subject { pipeline.default_branch? }

    before do
      allow(project).to receive(:default_branch).and_return(default_branch)
    end

    context 'when pipeline ref is the default branch of the project' do
      let(:pipeline) do
        build(:ci_empty_pipeline, status: :created, project: project, ref: default_branch)
      end

      it "returns true" do
        expect(subject).to be_truthy
      end
    end

    context 'when pipeline ref is not the default branch of the project' do
      let(:pipeline) do
        build(:ci_empty_pipeline, status: :created, project: project, ref: 'another_branch')
      end

      it "returns false" do
        expect(subject).to be_falsey
      end
    end
  end
end