// fillRange writes keys with the given prefix and associated values
// until bytes bytes have been written.
func fillRange(store *storage.Store, rangeID proto.RangeID, prefix proto.Key, bytes int64, t *testing.T) {
src := rand.New(rand.NewSource(0))
for {
var ms engine.MVCCStats
if err := engine.MVCCGetRangeStats(store.Engine(), rangeID, &ms); err != nil {
t.Fatal(err)
}
keyBytes, valBytes := ms.KeyBytes, ms.ValBytes
if keyBytes+valBytes >= bytes {
return
}
key := append(append([]byte(nil), prefix...), randutil.RandBytes(src, 100)...)
val := randutil.RandBytes(src, int(src.Int31n(1<<8)))
pArgs := putArgs(key, val, rangeID, store.StoreID())
pArgs.Timestamp = store.Clock().Now()
if _, err := store.ExecuteCmd(context.Background(), &pArgs); err != nil {
t.Fatal(err)
}
}
}