Split MR widget into cached and non-cached serializers

Splits auto-refreshing of MR widget into 2 requests:

- the one which uses etag-caching and invalidates the fields on change
- the one without caching

The idea is to gradually move all the fields to etag-cached endpoint

1 files changed, 2 insertions, 0 deletions

diff --git a/spec/models/merge_request_spec.rb b/spec/models/merge_request_spec.rb
index 6a5bd276233..53424204db7 100644
--- a/spec/models/merge_request_spec.rb
+++ b/spec/models/merge_request_spec.rb
@@ -1988,6 +1988,7 @@ describe MergeRequest do
       params = {}
       merge_jid = 'hash-123'
 
+      expect(merge_request).to receive(:expire_etag_cache)
       expect(MergeWorker).to receive(:perform_async).with(merge_request.id, user_id, params) do
         merge_jid
       end
@@ -2011,6 +2012,7 @@ describe MergeRequest do
         .with(merge_request.id, user_id)
         .and_return(rebase_jid)
 
+      expect(merge_request).to receive(:expire_etag_cache)
       expect(merge_request).to receive(:lock!).and_call_original
 
       execute