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Repo: use Option to signal retrieval success or failure

This commit is contained in:
Mark Spanbroek 2021-01-28 10:09:21 +01:00 committed by markspanbroek
parent 520f3f3bc9
commit 28d1ddf7e3
2 changed files with 11 additions and 3 deletions
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9
ipfs/repo.nim
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@ -1,8 +1,10 @@
import std/options
import std/tables
import std/hashes
import pkg/libp2p
import ./ipfsobject
export options
export ipfsobject
type
@ -18,5 +20,8 @@ proc store*(repo: Repo, obj: IpfsObject) =
proc contains*(repo: Repo, id: Cid): bool =
repo.storage.hasKey(id)
proc retrieve*(repo: Repo, id: Cid): IpfsObject =
repo.storage[id]
proc retrieve*(repo: Repo, id: Cid): Option[IpfsObject] =
if repo.contains(id):
repo.storage[id].some
else:
IpfsObject.none

5
tests/ipfs/testRepo.nim
View File

@ -14,7 +14,10 @@ suite "repo":
test "retrieves IPFS objects by their content id":
repo.store(obj)
check repo.retrieve(obj.cid) == obj
check repo.retrieve(obj.cid).get() == obj
test "signals retrieval failure":
check repo.retrieve(obj.cid).isNone
test "knows which content ids are stored":
check repo.contains(obj.cid) == false