require 'spec_helper'

describe Resolvers::MergeRequestsResolver do
  include GraphqlHelpers

  set(:project) { create(:project, :repository) }
  set(:merge_request_1) { create(:merge_request, :simple, source_project: project, target_project: project) }
  set(:merge_request_2) { create(:merge_request, :rebased, source_project: project, target_project: project) }

  set(:other_project) { create(:project, :repository) }
  set(:other_merge_request) { create(:merge_request, source_project: other_project, target_project: other_project) }

  let(:iid_1) { merge_request_1.iid }
  let(:iid_2) { merge_request_2.iid }

  let(:other_iid) { other_merge_request.iid }

  describe '#resolve' do
    it 'batch-resolves by target project full path and individual IID' do
      result = batch(max_queries: 2) do
        resolve_mr(project, iid: iid_1) + resolve_mr(project, iid: iid_2)
      end

      expect(result).to contain_exactly(merge_request_1, merge_request_2)
    end

    it 'batch-resolves by target project full path and IIDS' do
      result = batch(max_queries: 2) do
        resolve_mr(project, iids: [iid_1, iid_2])
      end

      expect(result).to contain_exactly(merge_request_1, merge_request_2)
    end

    it 'can batch-resolve merge requests from different projects' do
      result = batch(max_queries: 3) do
        resolve_mr(project, iid: iid_1) +
          resolve_mr(project, iid: iid_2) +
          resolve_mr(other_project, iid: other_iid)
      end

      expect(result).to contain_exactly(merge_request_1, merge_request_2, other_merge_request)
    end

    it 'resolves an unknown iid to be empty' do
      result = batch { resolve_mr(project, iid: -1) }

      expect(result).to be_empty
    end

    it 'resolves empty iids to be empty' do
      result = batch { resolve_mr(project, iids: []) }

      expect(result).to be_empty
    end
  end

  def resolve_mr(project, args)
    resolve(described_class, obj: project, args: args)
  end
end