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path: root/spec/graphql/resolvers/merge_request_resolver_spec.rb
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require 'spec_helper'

describe Resolvers::MergeRequestResolver 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 merge requests by target project full path and IID' do
      result = batch(max_queries: 2) do
        [resolve_mr(project, iid_1), resolve_mr(project, 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_1), resolve_mr(project, iid_2), resolve_mr(other_project, other_iid)]
      end

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

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

      expect(result).to be_nil
    end
  end

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