mirror of
https://github.com/luxfi/validators.git
synced 2026-10-30 15:13:53 +00:00
zeekayandHanzo Dev
3c4715f91a
The commitment to a weighted set was written where it was first needed. Anything else that needs it — a committee document, a reader checking the set it was handed — would have written its own, and two encodings of one set are two networks. Co-authored-by: Hanzo Dev <[email protected]>
54 lines
1.4 KiB
Go
54 lines
1.4 KiB
Go
// Copyright (C) 2019-2026, Lux Industries, Inc. All rights reserved.
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// See the file LICENSE for licensing terms.
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package validators
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import (
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"crypto/sha256"
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"encoding/binary"
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"testing"
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"github.com/luxfi/ids"
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)
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// TestSetRoot pins the set-root encoding. A change here is consensus-breaking:
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// every node computes this root over the same set and signs against it, so two
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// encodings are two networks.
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func TestSetRoot(t *testing.T) {
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var a, b ids.NodeID
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a[0], b[0] = 0x01, 0x02
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set := map[ids.NodeID]*GetValidatorOutput{
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b: {NodeID: b, PublicKey: []byte{0xcc}, Light: 20},
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a: {NodeID: a, PublicKey: []byte{0xaa, 0xbb}, Light: 10},
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}
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// Recomputed from the spec rather than from SetRoot, so this is a check and
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// not a tautology.
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h := sha256.New()
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var u64 [8]byte
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for _, v := range []struct {
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id ids.NodeID
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pk []byte
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light uint64
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}{{a, []byte{0xaa, 0xbb}, 10}, {b, []byte{0xcc}, 20}} {
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h.Write(v.id[:])
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binary.BigEndian.PutUint64(u64[:], v.light)
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h.Write(u64[:])
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binary.BigEndian.PutUint64(u64[:], uint64(len(v.pk)))
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h.Write(u64[:])
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h.Write(v.pk)
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}
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var want ids.ID
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copy(want[:], h.Sum(nil))
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if got := SetRoot(set); got != want {
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t.Fatalf("set-root encoding drifted:\n got %s\n want %s", got, want)
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}
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if SetRoot(nil) != ids.Empty {
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t.Fatal("nil set commits to ids.Empty")
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}
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if SetRoot(map[ids.NodeID]*GetValidatorOutput{}) != ids.Empty {
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t.Fatal("empty set commits to ids.Empty")
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}
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}
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