func splitTestRange(store *storage.Store, key, splitKey proto.Key, t *testing.T) *storage.Range {
rng := store.LookupRange(key, key)
if rng == nil {
t.Fatalf("couldn't lookup range for key %q", key)
}
desc, err := store.NewRangeDescriptor(splitKey, rng.Desc().EndKey, rng.Desc().Replicas)
if err != nil {
t.Fatal(err)
}
newRng, err := storage.NewRange(desc, store)
if err != nil {
t.Fatal(err)
}
if err := store.SplitRange(rng, newRng); err != nil {
t.Fatal(err)
}
return newRng
}