Module field_version 

Functions

batch_insert_checks_version

Batch-creating multiple versioned items should initialize all versions to 1, and a duplicate within the batch should fail.

create_initializes_version

A newly created record starts with version == 1.

delete_checks_version

Deleting a record checks the version — a fresh handle succeeds.

duplicate_create_fails

Creating the same primary key twice should fail because of the attribute_not_exists condition on the version column.

query_update_multi_key_works

Query-based update on a versioned model: exercises update_by_key path 2 (no unique index, N keys via transact_write_items on DDB).

stale_delete_fails

Deleting from a stale snapshot (wrong version) should fail.

stale_update_fails

Two updates from the same stale snapshot — the second should fail with a condition-check error because the DB version has already moved to 2.

unique_index_stale_update_fails

Stale update on a model with a unique index: the second update from a stale snapshot should fail.

unique_index_update_increments_version

Updating a record through the unique-index path (path 3) increments the version when the unique column changes.

update_increments_version

Updating a record increments the version.