# frozen_string_literal: true

require 'spec_helper'

describe MergeRequests::PushedBranchesService do
  let(:project) { create(:project) }
  let!(:service) { described_class.new(project, nil, changes: pushed_branches) }

  context 'when branches pushed' do
    let(:pushed_branches) do
      %w(branch1 branch2 extra1 extra2 extra3).map do |branch|
        { ref: "refs/heads/#{branch}" }
      end
    end

    it 'returns only branches which have a merge request' do
      create(:merge_request, source_branch: 'branch1', source_project: project)
      create(:merge_request, source_branch: 'branch2', source_project: project)
      create(:merge_request, target_branch: 'branch2', source_project: project)
      create(:merge_request, :closed, target_branch: 'extra1', source_project: project)
      create(:merge_request, source_branch: 'extra2')

      expect(service.execute).to contain_exactly('branch1', 'branch2')
    end
  end

  context 'when tags pushed' do
    let(:pushed_branches) do
      %w(v10.0.0 v11.0.2 v12.1.0).map do |branch|
        { ref: "refs/tags/#{branch}" }
      end
    end

    it 'returns empty result without any SQL query performed' do
      control_count = ActiveRecord::QueryRecorder.new do
        expect(service.execute).to be_empty
      end.count

      expect(control_count).to be_zero
    end
  end
end
