# frozen_string_literal: true
#
require 'spec_helper'
require Rails.root.join('db', 'post_migrate', '20200220115023_fix_projects_without_prometheus_service.rb')

RSpec.describe FixProjectsWithoutPrometheusService, :migration do
  let(:namespace) { table(:namespaces).create(name: 'gitlab', path: 'gitlab-org') }

  let!(:projects) do
    [
      table(:projects).create(namespace_id: namespace.id, name: 'foo 1'),
      table(:projects).create(namespace_id: namespace.id, name: 'foo 2'),
      table(:projects).create(namespace_id: namespace.id, name: 'foo 3')
    ]
  end

  before do
    stub_const("#{described_class.name}::BATCH_SIZE", 2)
  end

  around do |example|
    Sidekiq::Testing.fake! do
      Timecop.freeze do
        example.call
      end
    end
  end

  it 'schedules jobs for ranges of projects' do
    migrate!

    expect(described_class::MIGRATION)
      .to be_scheduled_delayed_migration(2.minutes, projects[0].id, projects[1].id)

    expect(described_class::MIGRATION)
      .to be_scheduled_delayed_migration(4.minutes, projects[2].id, projects[2].id)
  end

  it 'schedules jobs according to the configured batch size' do
    expect { migrate! }.to change { BackgroundMigrationWorker.jobs.size }.by(2)
  end
end