// TestMerkleBlockCrossProtocol tests the MsgMerkleBlock API when encoding with
// the latest protocol version and decoding with BIP0031Version.
func TestMerkleBlockCrossProtocol(t *testing.T) {
// Block 1 header.
prevHash := &blockOne.Header.PrevBlock
merkleHash := &blockOne.Header.MerkleRoot
bits := blockOne.Header.Bits
nonce := blockOne.Header.Nonce
bh := btcwire.NewBlockHeader(prevHash, merkleHash, bits, nonce)
msg := btcwire.NewMsgMerkleBlock(bh)
// Encode with latest protocol version.
var buf bytes.Buffer
err := msg.BtcEncode(&buf, btcwire.ProtocolVersion)
if err != nil {
t.Errorf("encode of NewMsgFilterLoad failed %v err <%v>", msg,
err)
}
// Decode with old protocol version.
var readmsg btcwire.MsgFilterLoad
err = readmsg.BtcDecode(&buf, btcwire.BIP0031Version)
if err == nil {
t.Errorf("decode of MsgFilterLoad succeeded when it shouldn't have %v",
msg)
}
}
// TestMerkleBlock tests the MsgMerkleBlock API.
func TestMerkleBlock(t *testing.T) {
pver := btcwire.ProtocolVersion
// Block 1 header.
prevHash := &blockOne.Header.PrevBlock
merkleHash := &blockOne.Header.MerkleRoot
bits := blockOne.Header.Bits
nonce := blockOne.Header.Nonce
bh := btcwire.NewBlockHeader(prevHash, merkleHash, bits, nonce)
// Ensure the command is expected value.
wantCmd := "merkleblock"
msg := btcwire.NewMsgMerkleBlock(bh)
if cmd := msg.Command(); cmd != wantCmd {
t.Errorf("NewMsgBlock: wrong command - got %v want %v",
cmd, wantCmd)
}
// Ensure max payload is expected value for latest protocol version.
// Num addresses (varInt) + max allowed addresses.
wantPayload := uint32(1000000)
maxPayload := msg.MaxPayloadLength(pver)
if maxPayload != wantPayload {
t.Errorf("MaxPayloadLength: wrong max payload length for "+
"protocol version %d - got %v, want %v", pver,
maxPayload, wantPayload)
}
// Load maxTxPerBlock hashes
data := make([]byte, 32)
for i := 0; i < btcwire.MaxTxPerBlock; i++ {
rand.Read(data)
hash, err := btcwire.NewShaHash(data)
if err != nil {
t.Errorf("NewShaHash failed: %v\n", err)
return
}
if err = msg.AddTxHash(hash); err != nil {
t.Errorf("AddTxHash failed: %v\n", err)
return
}
}
// Add one more Tx to test failure.
rand.Read(data)
hash, err := btcwire.NewShaHash(data)
if err != nil {
t.Errorf("NewShaHash failed: %v\n", err)
return
}
if err = msg.AddTxHash(hash); err == nil {
t.Errorf("AddTxHash succeeded when it should have failed")
return
}
// Test encode with latest protocol version.
var buf bytes.Buffer
err = msg.BtcEncode(&buf, pver)
if err != nil {
t.Errorf("encode of MsgMerkleBlock failed %v err <%v>", msg, err)
}
// Test decode with latest protocol version.
readmsg := btcwire.MsgMerkleBlock{}
err = readmsg.BtcDecode(&buf, pver)
if err != nil {
t.Errorf("decode of MsgMerkleBlock failed [%v] err <%v>", buf, err)
}
// Force extra hash to test maxTxPerBlock.
msg.Hashes = append(msg.Hashes, hash)
err = msg.BtcEncode(&buf, pver)
if err == nil {
t.Errorf("encode of MsgMerkleBlock succeeded with too many " +
"tx hashes when it should have failed")
return
}
// Force too many flag bytes to test maxFlagsPerMerkleBlock.
// Reset the number of hashes back to a valid value.
msg.Hashes = msg.Hashes[len(msg.Hashes)-1:]
msg.Flags = make([]byte, btcwire.MaxFlagsPerMerkleBlock+1)
err = msg.BtcEncode(&buf, pver)
if err == nil {
t.Errorf("encode of MsgMerkleBlock succeeded with too many " +
"flag bytes when it should have failed")
return
}
}