package consensus import ( . "github.com/tendermint/tendermint/binary" . "github.com/tendermint/tendermint/block" . "github.com/tendermint/tendermint/common" state "github.com/tendermint/tendermint/state" "bytes" "testing" ) // NOTE: see consensus/test.go for common test methods. // Convenience method. // Signs the vote and sets the POL's vote at the desired index // Returns the POLVoteSignature pointer, so you can modify it afterwards. func signAddPOLVoteSignature(val *state.PrivValidator, valSet *state.ValidatorSet, vote *Vote, pol *POL) *POLVoteSignature { vote = vote.Copy() err := val.SignVote(vote) if err != nil { panic(err) } idx, _ := valSet.GetByAddress(val.Address) // now we have the index pol.Votes[idx] = POLVoteSignature{vote.Round, vote.Signature} return &pol.Votes[idx] } func TestVerifyVotes(t *testing.T) { height, round := uint(1), uint(0) _, valSet, privValidators := randVoteSet(height, round, VoteTypePrevote, 10, 1) // Make a POL with -2/3 votes. blockHash := RandBytes(32) pol := &POL{ Height: height, Round: round, BlockHash: blockHash, Votes: make([]POLVoteSignature, valSet.Size()), } voteProto := &Vote{ Height: height, Round: round, Type: VoteTypePrevote, BlockHash: blockHash, } for i := 0; i < 6; i++ { signAddPOLVoteSignature(privValidators[i], valSet, voteProto, pol) } // Check that validation fails. if err := pol.Verify(valSet); err == nil { t.Errorf("Expected POL.Verify() to fail, not enough votes.") } // Insert another vote to make +2/3 signAddPOLVoteSignature(privValidators[7], valSet, voteProto, pol) // Check that validation succeeds. if err := pol.Verify(valSet); err != nil { t.Errorf("POL.Verify() failed: %v", err) } } func TestVerifyInvalidVote(t *testing.T) { height, round := uint(1), uint(0) _, valSet, privValidators := randVoteSet(height, round, VoteTypePrevote, 10, 1) // Make a POL with +2/3 votes with the wrong signature. blockHash := RandBytes(32) pol := &POL{ Height: height, Round: round, BlockHash: blockHash, Votes: make([]POLVoteSignature, valSet.Size()), } voteProto := &Vote{ Height: height, Round: round, Type: VoteTypePrevote, BlockHash: blockHash, } for i := 0; i < 7; i++ { polVoteSig := signAddPOLVoteSignature(privValidators[i], valSet, voteProto, pol) polVoteSig.Signature[0] += byte(0x01) // mutated! } // Check that validation fails. if err := pol.Verify(valSet); err == nil { t.Errorf("Expected POL.Verify() to fail, wrong signatures.") } } func TestVerifyCommits(t *testing.T) { height, round := uint(1), uint(2) _, valSet, privValidators := randVoteSet(height, round, VoteTypePrevote, 10, 1) // Make a POL with +2/3 votes. blockHash := RandBytes(32) pol := &POL{ Height: height, Round: round, BlockHash: blockHash, Votes: make([]POLVoteSignature, valSet.Size()), } voteProto := &Vote{ Height: height, Round: round - 1, Type: VoteTypeCommit, BlockHash: blockHash, } for i := 0; i < 7; i++ { signAddPOLVoteSignature(privValidators[i], valSet, voteProto, pol) } // Check that validation succeeds. if err := pol.Verify(valSet); err != nil { t.Errorf("POL.Verify() failed: %v", err) } } func TestVerifyInvalidCommits(t *testing.T) { height, round := uint(1), uint(2) _, valSet, privValidators := randVoteSet(height, round, VoteTypePrevote, 10, 1) // Make a POL with +2/3 votes with the wrong signature. blockHash := RandBytes(32) pol := &POL{ Height: height, Round: round, BlockHash: blockHash, Votes: make([]POLVoteSignature, valSet.Size()), } voteProto := &Vote{ Height: height, Round: round - 1, Type: VoteTypeCommit, BlockHash: blockHash, } for i := 0; i < 7; i++ { polVoteSig := signAddPOLVoteSignature(privValidators[i], valSet, voteProto, pol) polVoteSig.Signature[0] += byte(0x01) } // Check that validation fails. if err := pol.Verify(valSet); err == nil { t.Errorf("Expected POL.Verify() to fail, wrong signatures.") } } func TestVerifyInvalidCommitRounds(t *testing.T) { height, round := uint(1), uint(2) _, valSet, privValidators := randVoteSet(height, round, VoteTypePrevote, 10, 1) // Make a POL with +2/3 commits for the current round. blockHash := RandBytes(32) pol := &POL{ Height: height, Round: round, BlockHash: blockHash, Votes: make([]POLVoteSignature, valSet.Size()), } voteProto := &Vote{ Height: height, Round: round, Type: VoteTypeCommit, BlockHash: blockHash, } for i := 0; i < 7; i++ { signAddPOLVoteSignature(privValidators[i], valSet, voteProto, pol) } // Check that validation fails. if err := pol.Verify(valSet); err == nil { t.Errorf("Expected POL.Verify() to fail, same round.") } } func TestVerifyInvalidCommitRounds2(t *testing.T) { height, round := uint(1), uint(2) _, valSet, privValidators := randVoteSet(height, round, VoteTypePrevote, 10, 1) // Make a POL with +2/3 commits for future round. blockHash := RandBytes(32) pol := &POL{ Height: height, Round: round, BlockHash: blockHash, Votes: make([]POLVoteSignature, valSet.Size()), } voteProto := &Vote{ Height: height, Round: round + 1, Type: VoteTypeCommit, BlockHash: blockHash, } for i := 0; i < 7; i++ { polVoteSig := signAddPOLVoteSignature(privValidators[i], valSet, voteProto, pol) polVoteSig.Round += 1 // mutate round } // Check that validation fails. if err := pol.Verify(valSet); err == nil { t.Errorf("Expected POL.Verify() to fail, future round.") } } func TestReadWrite(t *testing.T) { height, round := uint(1), uint(2) _, valSet, privValidators := randVoteSet(height, round, VoteTypePrevote, 10, 1) // Make a POL with +2/3 votes. blockHash := RandBytes(32) pol := &POL{ Height: height, Round: round, BlockHash: blockHash, Votes: make([]POLVoteSignature, valSet.Size()), } voteProto := &Vote{ Height: height, Round: round, Type: VoteTypePrevote, BlockHash: blockHash, } for i := 0; i < 7; i++ { signAddPOLVoteSignature(privValidators[i], valSet, voteProto, pol) } // Write it to a buffer. buf, n, err := new(bytes.Buffer), new(int64), new(error) WriteBinary(pol, buf, n, err) if *err != nil { t.Fatalf("Failed to write POL: %v", *err) } // Read from buffer. pol2 := ReadBinary(&POL{}, buf, n, err).(*POL) if *err != nil { t.Fatalf("Failed to read POL") } // Check that validation succeeds. if err := pol2.Verify(valSet); err != nil { t.Errorf("POL.Verify() failed: %v", err) } }