Add test

spec/services/process_mentions_service_spec.rb

@@ -103,4 +103,27 @@
       end
     end
   end
+
+  context 'with circle post' do
+    let(:status) { Fabricate(:status, account: account) }
+    let(:circle) { Fabricate(:circle, account: account) }
+    let(:follower) { Fabricate(:account) }
+    let(:other) { Fabricate(:account) }
+
+    before do
+      follower.follow!(account)
+      other.follow!(account)
+      circle.accounts << follower
+      described_class.new.call(status, limited_type: :circle, circle: circle)
+    end
+
+    it 'remains circle post on history' do
+      expect(CircleStatus.exists?(circle_id: circle.id, status_id: status.id)).to be true
+    end
+
+    it 'post is delivered to circle members' do
+      expect(status.mentioned_accounts.count).to eq 1
+      expect(status.mentioned_accounts.first.id).to eq follower.id
+    end
+  end
 end