require 'spec_helper' describe Gitlab::LanguageDetection do set(:project) { create(:project, :repository) } set(:ruby) { create(:programming_language, name: 'Ruby') } set(:haskell) { create(:programming_language, name: 'Haskell') } let(:repository) { project.repository } let(:detection) do [{ value: 66.63, label: "Ruby", color: "#701516", highlight: "#701516" }, { value: 12.96, label: "JavaScript", color: "#f1e05a", highlight: "#f1e05a" }, { value: 7.9, label: "Elixir", color: "#e34c26", highlight: "#e34c26" }, { value: 2.51, label: "CoffeeScript", color: "#244776", highlight: "#244776" }, { value: 1.51, label: "Go", color: "#2a4776", highlight: "#244776" }, { value: 1.1, label: "MepmepLang", color: "#2a4776", highlight: "#244776" }] end let(:repository_languages) do [RepositoryLanguage.new(share: 10, programming_language: ruby)] end subject { described_class.new(repository, repository_languages) } before do allow(repository).to receive(:languages).and_return(detection) end describe '#languages' do it 'returns the language names' do expect(subject.languages).to eq(%w[Ruby JavaScript Elixir CoffeeScript Go]) end end describe '#insertions' do let(:programming_languages) { [ruby, haskell] } let(:detection) do [{ value: 10, label: haskell.name, color: haskell.color }] end it 'only includes new languages' do insertions = subject.insertions(programming_languages) expect(insertions).not_to be_empty expect(insertions.first[:project_id]).to be(project.id) expect(insertions.first[:programming_language_id]).to be(haskell.id) expect(insertions.first[:share]).to be(10) end end describe '#updates' do it 'updates the share of languages' do first_update = subject.updates.first expect(first_update).not_to be_nil expect(first_update[:programming_language_id]).to eq(ruby.id) expect(first_update[:share]).to eq(66.63) end it 'does not include languages to be removed' do ids = subject.updates.map { |h| h[:programming_language_id] } expect(ids).not_to include(haskell.id) end context 'when silent writes occur' do let(:repository_languages) do [RepositoryLanguage.new(share: 66.63, programming_language: ruby)] end it "doesn't include them in the result" do expect(subject.updates).to be_empty end end end describe '#deletions' do let(:repository_languages) do [RepositoryLanguage.new(share: 10, programming_language: ruby), RepositoryLanguage.new(share: 5, programming_language: haskell)] end it 'lists undetected languages' do expect(subject.deletions).not_to be_empty expect(subject.deletions).to include(haskell.id) end end end