// TestFilterAddCrossProtocol tests the MsgFilterAdd API when encoding with the
// latest protocol version and decoding with BIP0031Version.
func TestFilterAddCrossProtocol(t *testing.T) {
data := []byte{0x01, 0x02}
msg := btcwire.NewMsgFilterAdd(data)
if !bytes.Equal(msg.Data, data) {
t.Errorf("should get same data back out")
}
// Encode with latest protocol version.
var buf bytes.Buffer
err := msg.BtcEncode(&buf, btcwire.ProtocolVersion)
if err != nil {
t.Errorf("encode of MsgFilterAdd failed %v err <%v>", msg, err)
}
// Decode with old protocol version.
var readmsg btcwire.MsgFilterAdd
err = readmsg.BtcDecode(&buf, btcwire.BIP0031Version)
if err == nil {
t.Errorf("decode of MsgFilterAdd succeeded when it shouldn't "+
"have %v", msg)
}
// Since one of the protocol versions doesn't support the filteradd
// message, make sure the data didn't get encoded and decoded back out.
if bytes.Equal(msg.Data, readmsg.Data) {
t.Error("should not get same data for cross protocol")
}
}
// TestFilterAddLatest tests the MsgFilterAdd API against the latest protocol
// version.
func TestFilterAddLatest(t *testing.T) {
pver := btcwire.ProtocolVersion
data := []byte{0x01, 0x02}
msg := btcwire.NewMsgFilterAdd(data)
// Ensure the command is expected value.
wantCmd := "filteradd"
if cmd := msg.Command(); cmd != wantCmd {
t.Errorf("NewMsgFilterAdd: wrong command - got %v want %v",
cmd, wantCmd)
}
// Ensure max payload is expected value for latest protocol version.
wantPayload := uint32(523)
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)
}
// Test encode with latest protocol version.
var buf bytes.Buffer
err := msg.BtcEncode(&buf, pver)
if err != nil {
t.Errorf("encode of MsgFilterAdd failed %v err <%v>", msg, err)
}
// Test decode with latest protocol version.
var readmsg btcwire.MsgFilterAdd
err = readmsg.BtcDecode(&buf, pver)
if err != nil {
t.Errorf("decode of MsgFilterAdd failed [%v] err <%v>", buf, err)
}
return
}
// TestFilterAddWireErrors performs negative tests against wire encode and decode
// of MsgFilterAdd to confirm error paths work correctly.
func TestFilterAddWireErrors(t *testing.T) {
pver := btcwire.ProtocolVersion
pverNoFilterAdd := btcwire.BIP0037Version - 1
btcwireErr := &btcwire.MessageError{}
baseData := []byte{0x01, 0x02, 0x03, 0x04}
baseFilterAdd := btcwire.NewMsgFilterAdd(baseData)
baseFilterAddEncoded := append([]byte{0x04}, baseData...)
tests := []struct {
in *btcwire.MsgFilterAdd // Value to encode
buf []byte // Wire encoding
pver uint32 // Protocol version for wire encoding
max int // Max size of fixed buffer to induce errors
writeErr error // Expected write error
readErr error // Expected read error
}{
// Latest protocol version with intentional read/write errors.
// Force error in data size.
{
baseFilterAdd, baseFilterAddEncoded, pver, 0,
io.ErrShortWrite, io.EOF,
},
// Force error in data.
{
baseFilterAdd, baseFilterAddEncoded, pver, 1,
io.ErrShortWrite, io.EOF,
},
// Force error due to unsupported protocol version.
{
baseFilterAdd, baseFilterAddEncoded, pverNoFilterAdd, 5,
btcwireErr, btcwireErr,
},
}
t.Logf("Running %d tests", len(tests))
for i, test := range tests {
// Encode to wire format.
w := newFixedWriter(test.max)
err := test.in.BtcEncode(w, test.pver)
if reflect.TypeOf(err) != reflect.TypeOf(test.writeErr) {
t.Errorf("BtcEncode #%d wrong error got: %v, want: %v",
i, err, test.writeErr)
continue
}
// For errors which are not of type btcwire.MessageError, check
// them for equality.
if _, ok := err.(*btcwire.MessageError); !ok {
if err != test.writeErr {
t.Errorf("BtcEncode #%d wrong error got: %v, "+
"want: %v", i, err, test.writeErr)
continue
}
}
// Decode from wire format.
var msg btcwire.MsgFilterAdd
r := newFixedReader(test.max, test.buf)
err = msg.BtcDecode(r, test.pver)
if reflect.TypeOf(err) != reflect.TypeOf(test.readErr) {
t.Errorf("BtcDecode #%d wrong error got: %v, want: %v",
i, err, test.readErr)
continue
}
// For errors which are not of type btcwire.MessageError, check
// them for equality.
if _, ok := err.(*btcwire.MessageError); !ok {
if err != test.readErr {
t.Errorf("BtcDecode #%d wrong error got: %v, "+
"want: %v", i, err, test.readErr)
continue
}
}
}
}