now we're able to merge the spec

spec/requests/api/artifacts_spec.rb

-require 'spec_helper'
-require_relative '../shared/artifacts_context'
-
-describe API::API, api: true do
-  include ApiHelpers
-
-  describe 'GET /projects/:id/artifacts/:ref_name/:build_name' do
-    include_context 'artifacts from ref and build name'
-
-    def path_from_ref(ref = pipeline.sha, job = build.name)
-      api("/projects/#{project.id}/builds/artifacts/#{ref}?job=#{job}", user)
-    end
-
-    context '401' do
-      let(:user) { nil }
-
-      before do
-        get path_from_ref
-      end
-
-      it 'gives 401 for unauthorized user' do
-        expect(response).to have_http_status(401)
-      end
-    end
-
-    context '404' do
-      def verify
-        expect(response).to have_http_status(404)
-      end
-
-      it_behaves_like 'artifacts from ref with 404'
-    end
-
-    context '200' do
-      def verify
-        download_headers =
-          { 'Content-Transfer-Encoding' => 'binary',
-            'Content-Disposition' =>
-              "attachment; filename=#{build.artifacts_file.filename}" }
-
-        expect(response).to have_http_status(200)
-        expect(response.headers).to include(download_headers)
-      end
-
-      it_behaves_like 'artifacts from ref with 302'
-    end
-  end
-end

spec/requests/api/builds_spec.rb

 require 'spec_helper'
+require_relative '../shared/artifacts_context'
 
 describe API::API, api: true do
   include ApiHelpers
@@ -186,6 +187,48 @@ describe API::API, api: true do
     end
   end
 
+  describe 'GET /projects/:id/artifacts/:ref_name/:build_name' do
+    include_context 'artifacts from ref and build name'
+
+    def path_from_ref(ref = pipeline.sha, job = build.name)
+      api("/projects/#{project.id}/builds/artifacts/#{ref}?job=#{job}", user)
+    end
+
+    context '401' do
+      let(:user) { nil }
+
+      before do
+        get path_from_ref
+      end
+
+      it 'gives 401 for unauthorized user' do
+        expect(response).to have_http_status(401)
+      end
+    end
+
+    context '404' do
+      def verify
+        expect(response).to have_http_status(404)
+      end
+
+      it_behaves_like 'artifacts from ref with 404'
+    end
+
+    context '200' do
+      def verify
+        download_headers =
+          { 'Content-Transfer-Encoding' => 'binary',
+            'Content-Disposition' =>
+              "attachment; filename=#{build.artifacts_file.filename}" }
+
+        expect(response).to have_http_status(200)
+        expect(response.headers).to include(download_headers)
+      end
+
+      it_behaves_like 'artifacts from ref with 302'
+    end
+  end
+
   describe 'GET /projects/:id/builds/:build_id/trace' do
     let(:build) { create(:ci_build, :trace, pipeline: pipeline) }