# frozen_string_literal: true

require 'spec_helper'

RSpec.describe Gitlab::Ci::Pipeline::Chain::CancelPendingPipelines do
  let_it_be(:project) { create(:project) }
  let_it_be(:user) { create(:user) }
  let(:prev_pipeline) { create(:ci_pipeline, project: project) }
  let(:new_commit) { create(:commit, project: project) }
  let(:pipeline) { create(:ci_pipeline, project: project, sha: new_commit.sha) }

  let(:command) do
    Gitlab::Ci::Pipeline::Chain::Command.new(project: project, current_user: user)
  end

  let(:step) { described_class.new(pipeline, command) }

  before do
    create(:ci_build, :interruptible, :running, pipeline: prev_pipeline)
    create(:ci_build, :interruptible, :success, pipeline: prev_pipeline)
    create(:ci_build, :created, pipeline: prev_pipeline)

    create(:ci_build, :interruptible, pipeline: pipeline)
  end

  describe '#perform!' do
    subject(:perform) { step.perform! }

    before do
      expect(build_statuses(prev_pipeline)).to contain_exactly('running', 'success', 'created')
      expect(build_statuses(pipeline)).to contain_exactly('pending')
    end

    context 'when auto-cancel is enabled' do
      before do
        project.update!(auto_cancel_pending_pipelines: 'enabled')
      end

      it 'cancels only previous interruptible builds' do
        perform

        expect(build_statuses(prev_pipeline)).to contain_exactly('canceled', 'success', 'canceled')
        expect(build_statuses(pipeline)).to contain_exactly('pending')
      end

      context 'when the previous pipeline has a child pipeline' do
        let(:child_pipeline) { create(:ci_pipeline, child_of: prev_pipeline) }

        context 'when the child pipeline has an interruptible job' do
          before do
            create(:ci_build, :interruptible, :running, pipeline: child_pipeline)
          end

          it 'cancels interruptible builds of child pipeline' do
            expect(build_statuses(child_pipeline)).to contain_exactly('running')

            perform

            expect(build_statuses(child_pipeline)).to contain_exactly('canceled')
          end
        end

        context 'when the child pipeline has not an interruptible job' do
          before do
            create(:ci_build, :running, pipeline: child_pipeline)
          end

          it 'does not cancel the build of child pipeline' do
            expect(build_statuses(child_pipeline)).to contain_exactly('running')

            perform

            expect(build_statuses(child_pipeline)).to contain_exactly('running')
          end
        end
      end

      context 'when the prev pipeline source is webide' do
        let(:prev_pipeline) { create(:ci_pipeline, :webide, project: project) }

        it 'does not cancel builds of the previous pipeline' do
          perform

          expect(build_statuses(prev_pipeline)).to contain_exactly('created', 'running', 'success')
          expect(build_statuses(pipeline)).to contain_exactly('pending')
        end
      end
    end

    context 'when auto-cancel is disabled' do
      before do
        project.update!(auto_cancel_pending_pipelines: 'disabled')
      end

      it 'does not cancel any build' do
        subject

        expect(build_statuses(prev_pipeline)).to contain_exactly('running', 'success', 'created')
        expect(build_statuses(pipeline)).to contain_exactly('pending')
      end
    end
  end

  private

  def build_statuses(pipeline)
    pipeline.builds.pluck(:status)
  end
end