Add controller specs

spec/controllers/import/gitlab_projects_controller_spec.rb

@@ -39,4 +39,62 @@ describe Import::GitlabProjectsController do
 
     it_behaves_like 'project import rate limiter'
   end
+
+  describe 'POST authorize' do
+    let(:workhorse_token) { JWT.encode({ 'iss' => 'gitlab-workhorse' }, Gitlab::Workhorse.secret, 'HS256') }
+
+    before do
+      request.headers['GitLab-Workhorse'] = '1.0'
+      request.headers[Gitlab::Workhorse::INTERNAL_API_REQUEST_HEADER] = workhorse_token
+    end
+
+    it 'authorizes importing project with workhorse header' do
+      post :authorize, format: :json
+
+      expect(response).to have_gitlab_http_status(:ok)
+      expect(response.content_type.to_s).to eq(Gitlab::Workhorse::INTERNAL_API_CONTENT_TYPE)
+    end
+
+    it 'rejects requests that bypassed gitlab-workhorse or have invalid header' do
+      request.headers[Gitlab::Workhorse::INTERNAL_API_REQUEST_HEADER] = 'INVALID_HEADER'
+
+      expect { post :authorize, format: :json }.to raise_error(JWT::DecodeError)
+    end
+
+    context 'when using remote storage' do
+      context 'when direct upload is enabled' do
+        before do
+          stub_uploads_object_storage(ImportExportUploader, enabled: true, direct_upload: true)
+        end
+
+        it 'responds with status 200, location of file remote store and object details' do
+          post :authorize, format: :json
+
+          expect(response).to have_gitlab_http_status(:ok)
+          expect(response.content_type.to_s).to eq(Gitlab::Workhorse::INTERNAL_API_CONTENT_TYPE)
+          expect(json_response).not_to have_key('TempPath')
+          expect(json_response['RemoteObject']).to have_key('ID')
+          expect(json_response['RemoteObject']).to have_key('GetURL')
+          expect(json_response['RemoteObject']).to have_key('StoreURL')
+          expect(json_response['RemoteObject']).to have_key('DeleteURL')
+          expect(json_response['RemoteObject']).to have_key('MultipartUpload')
+        end
+      end
+
+      context 'when direct upload is disabled' do
+        before do
+          stub_uploads_object_storage(ImportExportUploader, enabled: true, direct_upload: false)
+        end
+
+        it 'handles as a local file' do
+          post :authorize, format: :json
+
+          expect(response).to have_gitlab_http_status(:ok)
+          expect(response.content_type.to_s).to eq(Gitlab::Workhorse::INTERNAL_API_CONTENT_TYPE)
+          expect(json_response['TempPath']).to eq(ImportExportUploader.workhorse_local_upload_path)
+          expect(json_response['RemoteObject']).to be_nil
+        end
+      end
+    end
+  end
 end