FIT: Insert in Sub-doc with value "{Mutation.CAS}" is treated as CAS value instead of a string

insert {

  path: "x.foo"

  content {

    content {

      passthrough_string: "${Mutation.CAS}"

    }

  }

  xattr: true

}

{"foo":"0x0000f405c522be17"} 

{"foo":"${Mutation.CAS}"} 

Listening on 0.0.0.0:8060

I, [2024-03-19T15:53:10.815462 #13581]  INFO -- : Using Ruby SDK version 3.4.5

I, [2024-03-19T15:57:38.476138 #13581]  INFO -- : disconnect_connections called

I, [2024-03-19T15:57:38.494306 #13581]  INFO -- : performer_caps_fetch called

I, [2024-03-19T15:57:38.543778 #13581]  INFO -- : cluster_connection_create called

I, [2024-03-19T15:57:38.543903 #13581]  INFO -- : Creating connection using connection string `couchbase://172.23.111.133` (ID = defaultClusterConnection_755d44b1-9bba-47ce-b096-591f1c009601)

I, [2024-03-19T15:58:05.910130 #13581]  INFO -- : ====== Test file: Start ======

I, [2024-03-19T15:58:06.922160 #13581]  INFO -- : ====== java.util.stream.Stream com.couchbase.client.kv.subdoc.SubdocMutationTest.insertExpandMacroXattrDoNotFlag():insertExpandMacroXattrDoNotFlag(): testStart ======

I, [2024-03-19T15:58:07.034728 #13581]  INFO -- : run called

I, [2024-03-19T15:58:07.035078 #13581]  INFO -- : Created the workload executor

I, [2024-03-19T15:58:07.035129 #13581]  INFO -- : Created the request executor

I, [2024-03-19T15:58:07.035233 #13581]  INFO -- : Executing the request

I, [2024-03-19T15:58:08.916606 #13581]  INFO -- : All streams from run 87e7d43e-0abd-45f6-872b-34e2db45540b have finished

I, [2024-03-19T15:58:08.977332 #13581]  INFO -- : run called

I, [2024-03-19T15:58:08.977668 #13581]  INFO -- : Created the workload executor

I, [2024-03-19T15:58:08.977700 #13581]  INFO -- : Created the request executor

I, [2024-03-19T15:58:08.977829 #13581]  INFO -- : Executing the request

I, [2024-03-19T15:58:09.261274 #13581]  INFO -- : All streams from run 49d67a91-844e-4a9e-b5c2-cacbd6326834 have finished

I, [2024-03-19T15:58:09.660424 #13581]  INFO -- : ====== java.util.stream.Stream com.couchbase.client.kv.subdoc.SubdocMutationTest.insertExpandMacroXattrDoNotFlag():insertExpandMacroXattrDoNotFlag(): testEnd ======

I, [2024-03-19T15:58:09.667827 #13581]  INFO -- : ====== Test file: End ======