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chore: expand testing to cover dag-pb identity CIDs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| package shared_testutil | ||
|
|
||
| import ( | ||
| "github.com/ipfs/go-cid" | ||
| dagpb "github.com/ipld/go-codec-dagpb" | ||
| "github.com/ipld/go-ipld-prime" | ||
| "github.com/ipld/go-ipld-prime/codec/dagcbor" | ||
| "github.com/ipld/go-ipld-prime/datamodel" | ||
| "github.com/ipld/go-ipld-prime/fluent/qp" | ||
| cidlink "github.com/ipld/go-ipld-prime/linking/cid" | ||
| basicnode "github.com/ipld/go-ipld-prime/node/basic" | ||
| "github.com/multiformats/go-multicodec" | ||
| ) | ||
|
|
||
| // MakeIdentityCidWith will create either a dag-pb or dag-cbor identity CID | ||
| // containing the provided list of CIDs and optional byte blocks. | ||
| // The dag-cbor identity CID will be a simple list with all items appended. | ||
| // This can also be used recursively to increase the ridiculousness. | ||
| func MakeIdentityCidWith(cids []cid.Cid, codec multicodec.Code, padding ...[]byte) (cid.Cid, error) { | ||
| var encoded []byte | ||
| var node datamodel.Node | ||
| var err error | ||
| switch codec { | ||
| case multicodec.DagPb: | ||
| if len(padding) > 1 { | ||
| panic("dag-pb only supports one bytes block") | ||
| } | ||
| node, err = qp.BuildMap(dagpb.Type.PBNode, 2, func(ma datamodel.MapAssembler) { | ||
| if len(padding) > 0 { | ||
| qp.MapEntry(ma, "Data", qp.Bytes(padding[0])) | ||
| } | ||
| qp.MapEntry(ma, "Links", qp.List(int64(len(cids)), func(la datamodel.ListAssembler) { | ||
| for _, cid := range cids { | ||
| qp.ListEntry(la, qp.Map(1, func(ma datamodel.MapAssembler) { | ||
| qp.MapEntry(ma, "Hash", qp.Link(cidlink.Link{Cid: cid})) | ||
| })) | ||
| } | ||
| })) | ||
| }) | ||
| if err != nil { | ||
| return cid.Undef, err | ||
| } | ||
| encoded, err = ipld.Encode(node, dagpb.Encode) | ||
| case multicodec.DagCbor: | ||
| // for dag-cbor we'll just build a list and push everything into it | ||
| node, err = qp.BuildList(basicnode.Prototype.List, int64(len(cids)+len(padding)), func(la datamodel.ListAssembler) { | ||
| for _, cid := range cids { | ||
| qp.ListEntry(la, qp.Link(cidlink.Link{Cid: cid})) | ||
| } | ||
| for _, pad := range padding { | ||
| qp.ListEntry(la, qp.Bytes(pad)) | ||
| } | ||
| }) | ||
| if err != nil { | ||
| return cid.Undef, err | ||
| } | ||
| encoded, err = ipld.Encode(node, dagcbor.Encode) | ||
| default: | ||
| panic("unsupported codec") | ||
| } | ||
|
|
||
| if err != nil { | ||
| return cid.Undef, err | ||
| } | ||
|
|
||
| lp := cidlink.LinkPrototype{Prefix: cid.Prefix{Version: 1, Codec: uint64(codec), MhType: 0x0}} | ||
| return lp.BuildLink(encoded).(cidlink.Link).Cid, nil | ||
| } |