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62 lines
1.5 KiB
Go
62 lines
1.5 KiB
Go
package lnwire
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import (
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"bytes"
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"testing"
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"github.com/stretchr/testify/require"
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)
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// TestInitEncodeDecode checks that we can encode and decode an Init message
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// to and from a byte stream.
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func TestInitEncodeDecode(t *testing.T) {
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t.Parallel()
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// These are the raw bytes that we expect to be generated from the
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// sample Init message.
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rawBytes := []byte{
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// GlobalFeatures
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0x00, 0x01, 0xc0,
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// Features
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0x00, 0x01, 0xc0,
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// ExtraData - unknown odd-type TLV record.
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0x6f, // type (111)
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0x02, // length
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0x79, 0x79, // value
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// ExtraData - custom TLV record.
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// TLV record for type 67676
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0xfe, 0x00, 0x01, 0x08, 0x6c, // type (67676)
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0x05, // length
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0x01, 0x02, 0x03, 0x04, 0x05, // value
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// ExtraData - custom TLV record.
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// TLV record for type 67777
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0xfe, 0x00, 0x01, 0x08, 0xc1, // type (67777)
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0x03, // length
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0x01, 0x02, 0x03, // value
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}
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// Create a new empty message and decode the raw bytes into it.
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msg := &Init{}
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r := bytes.NewReader(rawBytes)
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err := msg.Decode(r, 0)
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require.NoError(t, err)
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require.NotNil(t, msg.GlobalFeatures)
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require.NotNil(t, msg.Features)
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require.NotNil(t, msg.CustomRecords)
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require.NotNil(t, msg.ExtraData)
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// Next, encode the message back into a new byte buffer.
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var b bytes.Buffer
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err = msg.Encode(&b, 0)
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require.NoError(t, err)
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// The re-encoded bytes should be exactly the same as the original raw
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// bytes.
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require.Equal(t, rawBytes, b.Bytes())
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}
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