Golang MsgBlock.BtcDecodeTxLoc方法代码示例

// TestBlockWireErrors performs negative tests against wire encode and decode
// of MsgBlock to confirm error paths work correctly.
func TestBlockWireErrors(t *testing.T) {
	// Use protocol version 60002 specifically here instead of the latest
	// because the test data is using bytes encoded with that protocol
	// version.
	pver := uint32(60002)

	tests := []struct {
		in       *btcwire.MsgBlock // 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
	}{
		// Force error in version.
		{&blockOne, blockOneBytes, pver, 0, io.ErrShortWrite, io.EOF},
		// Force error in prev block hash.
		{&blockOne, blockOneBytes, pver, 4, io.ErrShortWrite, io.EOF},
		// Force error in merkle root.
		{&blockOne, blockOneBytes, pver, 36, io.ErrShortWrite, io.EOF},
		// Force error in timestamp.
		{&blockOne, blockOneBytes, pver, 68, io.ErrShortWrite, io.EOF},
		// Force error in difficulty bits.
		{&blockOne, blockOneBytes, pver, 72, io.ErrShortWrite, io.EOF},
		// Force error in header nonce.
		{&blockOne, blockOneBytes, pver, 76, io.ErrShortWrite, io.EOF},
		// Force error in transaction count.
		{&blockOne, blockOneBytes, pver, 80, io.ErrShortWrite, io.EOF},
		// Force error in transactions.
		{&blockOne, blockOneBytes, pver, 81, io.ErrShortWrite, io.EOF},
	}

	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 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.MsgBlock
		r := newFixedReader(test.max, test.buf)
		err = msg.BtcDecode(r, test.pver)
		if err != test.readErr {
			t.Errorf("BtcDecode #%d wrong error got: %v, want: %v",
				i, err, test.readErr)
			continue
		}

		var txLocMsg btcwire.MsgBlock
		rbuf := bytes.NewBuffer(test.buf[0:test.max])
		_, err = txLocMsg.BtcDecodeTxLoc(rbuf, test.pver)
		if err != test.readErr {
			t.Errorf("BtcDecodeTxLoc #%d wrong error got: %v, want: %v",
				i, err, test.readErr)
			continue
		}
	}
}

// TestBlockWire tests the MsgBlock wire encode and decode for various numbers
// of transaction inputs and outputs and protocol versions.
func TestBlockWire(t *testing.T) {
	tests := []struct {
		in     *btcwire.MsgBlock // Message to encode
		out    *btcwire.MsgBlock // Expected decoded message
		buf    []byte            // Wire encoding
		txLocs []btcwire.TxLoc   // Expected transaction locations
		pver   uint32            // Protocol version for wire encoding
	}{
		// Latest protocol version.
		{
			&blockOne,
			&blockOne,
			blockOneBytes,
			blockOneTxLocs,
			btcwire.ProtocolVersion,
		},

		// Protocol version BIP0035Version.
		{
			&blockOne,
			&blockOne,
			blockOneBytes,
			blockOneTxLocs,
			btcwire.BIP0035Version,
		},

		// Protocol version BIP0031Version.
		{
			&blockOne,
			&blockOne,
			blockOneBytes,
			blockOneTxLocs,
			btcwire.BIP0031Version,
		},

		// Protocol version NetAddressTimeVersion.
		{
			&blockOne,
			&blockOne,
			blockOneBytes,
			blockOneTxLocs,
			btcwire.NetAddressTimeVersion,
		},

		// Protocol version MultipleAddressVersion.
		{
			&blockOne,
			&blockOne,
			blockOneBytes,
			blockOneTxLocs,
			btcwire.MultipleAddressVersion,
		},
	}

	t.Logf("Running %d tests", len(tests))
	for i, test := range tests {
		// Encode the message to wire format.
		var buf bytes.Buffer
		err := test.in.BtcEncode(&buf, test.pver)
		if err != nil {
			t.Errorf("BtcEncode #%d error %v", i, err)
			continue
		}
		if !bytes.Equal(buf.Bytes(), test.buf) {
			t.Errorf("BtcEncode #%d\n got: %s want: %s", i,
				spew.Sdump(buf.Bytes()), spew.Sdump(test.buf))
			continue
		}

		// Decode the message from wire format.
		var msg btcwire.MsgBlock
		rbuf := bytes.NewBuffer(test.buf)
		err = msg.BtcDecode(rbuf, test.pver)
		if err != nil {
			t.Errorf("BtcDecode #%d error %v", i, err)
			continue
		}
		if !reflect.DeepEqual(&msg, test.out) {
			t.Errorf("BtcDecode #%d\n got: %s want: %s", i,
				spew.Sdump(&msg), spew.Sdump(test.out))
			continue
		}

		var txLocMsg btcwire.MsgBlock
		rbuf = bytes.NewBuffer(test.buf)
		txLocs, err := txLocMsg.BtcDecodeTxLoc(rbuf, test.pver)
		if err != nil {
			t.Errorf("BtcDecodeTxLoc #%d error %v", i, err)
			continue
		}
		if !reflect.DeepEqual(&txLocMsg, test.out) {
			t.Errorf("BtcDecodeTxLoc #%d\n got: %s want: %s", i,
				spew.Sdump(&txLocMsg), spew.Sdump(test.out))
			continue
		}
		if !reflect.DeepEqual(txLocs, test.txLocs) {
			t.Errorf("BtcDecodeTxLoc #%d\n got: %s want: %s", i,
				spew.Sdump(txLocs), spew.Sdump(test.txLocs))
//.........这里部分代码省略.........