dedupetest

type Harness struct {
	// Factory builds a tenant's store over the backend. The suite switches
	// each store it builds on and closes it at cleanup.
	Factory dedupe.Factory
	// Peer, if set, builds a tenant's store over the same data through a
	// second client — another process's view, for backends that have one.
	// nil uses Factory.
	Peer dedupe.Factory
	// Advance moves the backend's clock forward by d. nil makes the suite
	// sleep instead, which is why its leases and retentions are whole
	// seconds: a backend may store expiry at one-second resolution.
	Advance func(d time.Duration)
	// FailNextReserve, if set, makes the backend's next Reserve fail after it
	// has claimed n keys. nil skips the case that needs it.
	FailNextReserve func(n int)
}