cachetest

type Options struct {
	// MaxValueBytes is the largest value the backend keeps; 0 skips the
	// oversize case.
	MaxValueBytes int

	// NewPair returns two instances over one shared store, as two processes
	// see it; nil skips the cross-instance cases.
	NewPair func(t *testing.T) (a, b cache.Cache)

	// Entries counts the entries a cache from the factory holds. No Lookup
	// reads the key a zero Snapshot would land under, so only a count shows
	// that one stored nothing; nil skips that case.
	Entries func(c cache.Cache) int
}