Fix RSS feeds not being cachable

app/controllers/application_controller.rb

@@ -55,7 +55,7 @@ def public_fetch_mode?
   end
 
   def store_current_location
-    store_location_for(:user, request.url) unless request.format == :json
+    store_location_for(:user, request.url) unless [:json, :rss].include?(request.format&.to_sym)
   end
 
   def require_admin!

spec/controllers/accounts_controller_spec.rb

@@ -5,6 +5,21 @@
 
   let(:account) { Fabricate(:user).account }
 
+  shared_examples 'cachable response' do
+    it 'does not set cookies' do
+      expect(response.cookies).to be_empty
+      expect(response.headers['Set-Cookies']).to be nil
+    end
+
+    it 'does not set sessions' do
+      expect(session).to be_empty
+    end
+
+    it 'returns public Cache-Control header' do
+      expect(response.headers['Cache-Control']).to include 'public'
+    end
+  end
+
   describe 'GET #show' do
     let(:format) { 'html' }
 
@@ -323,9 +338,7 @@
           expect(response.content_type).to eq 'application/activity+json'
         end
 
-        it 'returns public Cache-Control header' do
-          expect(response.headers['Cache-Control']).to include 'public'
-        end
+        it_behaves_like 'cachable response'
 
         it 'renders account' do
           json = body_as_json
@@ -343,9 +356,7 @@
             expect(response.content_type).to eq 'application/activity+json'
           end
 
-          it 'returns public Cache-Control header' do
-            expect(response.headers['Cache-Control']).to include 'public'
-          end
+          it_behaves_like 'cachable response'
 
           it 'returns Vary header with Signature' do
             expect(response.headers['Vary']).to include 'Signature'
@@ -401,9 +412,7 @@
           expect(response.content_type).to eq 'application/activity+json'
         end
 
-        it 'returns public Cache-Control header' do
-          expect(response.headers['Cache-Control']).to include 'public'
-        end
+        it_behaves_like 'cachable response'
 
         it 'renders account' do
           json = body_as_json
@@ -447,9 +456,7 @@
           expect(response).to have_http_status(200)
         end
 
-        it 'returns public Cache-Control header' do
-          expect(response.headers['Cache-Control']).to include 'public'
-        end
+        it_behaves_like 'cachable response'
       end
 
       context do

spec/controllers/activitypub/collections_controller_spec.rb

@@ -6,6 +6,21 @@
   let!(:account) { Fabricate(:account) }
   let(:remote_account) { nil }
 
+  shared_examples 'cachable response' do
+    it 'does not set cookies' do
+      expect(response.cookies).to be_empty
+      expect(response.headers['Set-Cookies']).to be nil
+    end
+
+    it 'does not set sessions' do
+      expect(session).to be_empty
+    end
+
+    it 'returns public Cache-Control header' do
+      expect(response.headers['Cache-Control']).to include 'public'
+    end
+  end
+
   before do
     allow(controller).to receive(:signed_request_account).and_return(remote_account)
 
@@ -31,9 +46,7 @@
           expect(response.content_type).to eq 'application/activity+json'
         end
 
-        it 'returns public Cache-Control header' do
-          expect(response.headers['Cache-Control']).to include 'public'
-        end
+        it_behaves_like 'cachable response'
 
         it 'returns orderedItems with pinned statuses' do
           json = body_as_json
@@ -58,9 +71,7 @@
             expect(response.content_type).to eq 'application/activity+json'
           end
 
-          it 'returns public Cache-Control header' do
-            expect(response.headers['Cache-Control']).to include 'public'
-          end
+          it_behaves_like 'cachable response'
 
           it 'returns orderedItems with pinned statuses' do
             json = body_as_json

spec/controllers/activitypub/outboxes_controller_spec.rb

@@ -3,6 +3,21 @@
 RSpec.describe ActivityPub::OutboxesController, type: :controller do
   let!(:account) { Fabricate(:account) }
 
+  shared_examples 'cachable response' do
+    it 'does not set cookies' do
+      expect(response.cookies).to be_empty
+      expect(response.headers['Set-Cookies']).to be nil
+    end
+
+    it 'does not set sessions' do
+      expect(session).to be_empty
+    end
+
+    it 'returns public Cache-Control header' do
+      expect(response.headers['Cache-Control']).to include 'public'
+    end
+  end
+
   before do
     Fabricate(:status, account: account, visibility: :public)
     Fabricate(:status, account: account, visibility: :unlisted)
@@ -39,9 +54,7 @@
           expect(json[:totalItems]).to eq 4
         end
 
-        it 'returns public Cache-Control header' do
-          expect(response.headers['Cache-Control']).to include 'public'
-        end
+        it_behaves_like 'cachable response'
       end
 
       context 'with page requested' do
@@ -62,9 +75,7 @@
           expect(json[:orderedItems].all? { |item| item[:to].include?(ActivityPub::TagManager::COLLECTIONS[:public]) || item[:cc].include?(ActivityPub::TagManager::COLLECTIONS[:public]) }).to be true
         end
 
-        it 'returns public Cache-Control header' do
-          expect(response.headers['Cache-Control']).to include 'public'
-        end
+        it_behaves_like 'cachable response'
       end
     end
 

spec/controllers/activitypub/replies_controller_spec.rb

@@ -7,6 +7,21 @@
   let(:remote_reply_id) { nil }
   let(:remote_account) { nil }
 
+  shared_examples 'cachable response' do
+    it 'does not set cookies' do
+      expect(response.cookies).to be_empty
+      expect(response.headers['Set-Cookies']).to be nil
+    end
+
+    it 'does not set sessions' do
+      expect(session).to be_empty
+    end
+
+    it 'returns public Cache-Control header' do
+      expect(response.headers['Cache-Control']).to include 'public'
+    end
+  end
+
   before do
     allow(controller).to receive(:signed_request_account).and_return(remote_account)
 
@@ -36,9 +51,7 @@
           expect(response.content_type).to eq 'application/activity+json'
         end
 
-        it 'returns public Cache-Control header' do
-          expect(response.headers['Cache-Control']).to include 'public'
-        end
+        it_behaves_like 'cachable response'
 
         it 'returns items with account\'s own replies' do
           json = body_as_json
@@ -87,9 +100,7 @@
             expect(response.content_type).to eq 'application/activity+json'
           end
 
-          it 'returns public Cache-Control header' do
-            expect(response.headers['Cache-Control']).to include 'public'
-          end
+          it_behaves_like 'cachable response'
 
           context 'without only_other_accounts' do
             it 'returns items with account\'s own replies' do

spec/controllers/statuses_controller_spec.rb

@@ -5,6 +5,21 @@
 describe StatusesController do
   render_views
 
+  shared_examples 'cachable response' do
+    it 'does not set cookies' do
+      expect(response.cookies).to be_empty
+      expect(response.headers['Set-Cookies']).to be nil
+    end
+
+    it 'does not set sessions' do
+      expect(session).to be_empty
+    end
+
+    it 'returns public Cache-Control header' do
+      expect(response.headers['Cache-Control']).to include 'public'
+    end
+  end
+
   describe 'GET #show' do
     let(:account) { Fabricate(:account) }
     let(:status)  { Fabricate(:status, account: account) }
@@ -80,9 +95,7 @@
           expect(response.headers['Vary']).to eq 'Accept'
         end
 
-        it 'returns public Cache-Control header' do
-          expect(response.headers['Cache-Control']).to include 'public'
-        end
+        it_behaves_like 'cachable response'
 
         it 'returns Content-Type header' do
           expect(response.headers['Content-Type']).to include 'application/activity+json'
@@ -470,9 +483,7 @@
             expect(response.headers['Vary']).to eq 'Accept'
           end
 
-          it 'returns public Cache-Control header' do
-            expect(response.headers['Cache-Control']).to include 'public'
-          end
+          it_behaves_like 'cachable response'
 
           it 'returns Content-Type header' do
             expect(response.headers['Content-Type']).to include 'application/activity+json'