1 files changed, 48 insertions, 0 deletions
diff --git a/spec/services/projects/repository_languages_service_spec.rb b/spec/services/projects/repository_languages_service_spec.rb
new file mode 100644
index 00000000000..61c1b8c5ec1
--- /dev/null
+++ b/spec/services/projects/repository_languages_service_spec.rb
@@ -0,0 +1,48 @@
+require 'spec_helper'
+
+describe Projects::RepositoryLanguagesService do
+  let(:service) { described_class.new(project, project.owner) }
+
+  context 'when detected_repository_languages flag is set' do
+    let(:project) { create(:project) }
+
+    context 'when a project is without detected programming languages' do
+      it 'schedules a worker and returns the empty result' do
+        expect(::DetectRepositoryLanguagesWorker).to receive(:perform_async).with(project.id, project.owner.id)
+        expect(service.execute).to eq([])
+      end
+    end
+
+    context 'when a project is with detected programming languages' do
+      let!(:repository_language) { create(:repository_language, project: project) }
+
+      it 'does not schedule a worker and returns the detected languages' do
+        expect(::DetectRepositoryLanguagesWorker).not_to receive(:perform_async).with(project.id, project.owner.id)
+
+        languages = service.execute
+
+        expect(languages.size).to eq(1)
+        expect(languages.last.attributes.values).to eq(
+          [project.id, repository_language.programming_language_id, repository_language.share]
+        )
+      end
+
+      it 'sets detected_repository_languages flag' do
+        expect { service.execute }.to change(project, :detected_repository_languages).from(nil).to(true)
+      end
+    end
+  end
+
+  context 'when detected_repository_languages flag is not set' do
+    let!(:repository_language) { create(:repository_language, project: project) }
+    let(:project) { create(:project, detected_repository_languages: true) }
+    let(:languages) { service.execute }
+
+    it 'returns repository languages' do
+      expect(languages.size).to eq(1)
+      expect(languages.last.attributes.values).to eq(
+        [project.id, repository_language.programming_language_id, repository_language.share]
+      )
+    end
+  end
+end