Module id_provider 

Identifier source, injected so tests get a deterministic — but still unique — id sequence.

Production wires UuidProvider (Uuid::new_v4().to_string()); tests construct a SequentialIdProvider and pass it to the unit under test.

Each new_id() call yields a fresh, distinct id. Per-entity uniqueness is preserved: a loop minting one id per row keeps producing distinct ids under both the production and the test provider.

Structs

SequentialIdProvider

Deterministic but unique: "{prefix}-0", "{prefix}-1", … Preserves the per-entity uniqueness invariant while being reproducible across runs.

UuidProvider

Production provider: random v4 UUIDs.

Traits

IdProvider

Identifier source. Yields a fresh unique id per call.

Type Aliases

IdRef

Shared handle to an id provider. Held by Clone types (LibraryManager) so they clone the handle, not the implementation.