akka-persistence-tck does not check bigger blobs of size more than 4k. #21704
Description
I found an issue using akka-persistence-jdbc library: akka/akka-persistence-jdbc#77
The main problem is that slick does not properly handle update of the blob in the snapshot if the size of the blob exceeds 4k bytes.
I've added the test case which failed with the current version of akka-persistence-jdbc:
https://github.com/skisel/akka-persistence-jdbc/blob/cb019c4d2d9d54f2eb72197ceded738cc91a4bce/src/test/scala/akka/persistence/jdbc/snapshot/BigBlobSnapshotStoreSpec.scala
I think it makes sense to port it to akka.persistence.snapshot.SnapshotStoreSpec as a test case to check if plugin correctly handles a bigger snapshots.