prysm-pulse/beacon-chain/state/v3/proofs_test.go

76 lines
2.5 KiB
Go

package v3_test
import (
"context"
"testing"
v3 "github.com/prysmaticlabs/prysm/beacon-chain/state/v3"
"github.com/prysmaticlabs/prysm/container/trie"
"github.com/prysmaticlabs/prysm/crypto/bls"
"github.com/prysmaticlabs/prysm/testing/require"
"github.com/prysmaticlabs/prysm/testing/util"
)
func TestBeaconStateMerkleProofs(t *testing.T) {
ctx := context.Background()
st, _ := util.DeterministicGenesisStateAltair(t, 256)
htr, err := st.HashTreeRoot(ctx)
require.NoError(t, err)
t.Run("current sync committee", func(t *testing.T) {
sc, err := st.CurrentSyncCommittee()
require.NoError(t, err)
// Verify the Merkle proof.
scRoot, err := sc.HashTreeRoot()
require.NoError(t, err)
proof, err := st.CurrentSyncCommitteeProof()
require.NoError(t, err)
valid := trie.VerifyMerkleProof(htr[:], scRoot[:], v3.CurrentSyncCommitteeGeneralizedIndex(), proof)
require.Equal(t, true, valid)
})
t.Run("next sync committee", func(t *testing.T) {
nextSC, err := st.NextSyncCommittee()
require.NoError(t, err)
proof, err := st.NextSyncCommitteeProof()
require.NoError(t, err)
// Verify the Merkle proof.
nextSCRoot, err := nextSC.HashTreeRoot()
require.NoError(t, err)
valid := trie.VerifyMerkleProof(htr[:], nextSCRoot[:], v3.NextSyncCommitteeGeneralizedIndex(), proof)
require.Equal(t, true, valid)
// Edit the sync committee.
privKey, err := bls.RandKey()
require.NoError(t, err)
nextSC.AggregatePubkey = privKey.PublicKey().Marshal()
require.NoError(t, st.SetNextSyncCommittee(nextSC))
// Verifying the old Merkle proof for the new value should fail.
nextSCRoot, err = nextSC.HashTreeRoot()
require.NoError(t, err)
valid = trie.VerifyMerkleProof(htr[:], nextSCRoot[:], v3.NextSyncCommitteeGeneralizedIndex(), proof)
require.Equal(t, false, valid)
// Generating a new, valid proof should pass.
proof, err = st.NextSyncCommitteeProof()
require.NoError(t, err)
htr, err = st.HashTreeRoot(ctx)
require.NoError(t, err)
valid = trie.VerifyMerkleProof(htr[:], nextSCRoot[:], v3.NextSyncCommitteeGeneralizedIndex(), proof)
require.Equal(t, true, valid)
})
t.Run("finalized root", func(t *testing.T) {
finalizedRoot := st.FinalizedCheckpoint().Root
// Verify the Merkle proof.
htr, err = st.HashTreeRoot(ctx)
require.NoError(t, err)
proof, err := st.FinalizedRootProof()
require.NoError(t, err)
gIndex := v3.FinalizedRootGeneralizedIndex()
valid := trie.VerifyMerkleProof(htr[:], finalizedRoot, gIndex, proof)
require.Equal(t, true, valid)
})
}