93 lines
3.0 KiB
JavaScript
93 lines
3.0 KiB
JavaScript
'use strict';
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var should = require('chai').should();
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var Encoding = require('../../../lib/services/header/encoding');
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describe('Header service encoding', function() {
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var servicePrefix = new Buffer('0000', 'hex');
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var hashPrefix = new Buffer('00', 'hex');
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var heightPrefix = new Buffer('01', 'hex');
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var encoding = new Encoding(servicePrefix);
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var hash = '91b58f19b6eecba94ed0f6e463e8e334ec0bcda7880e2985c82a8f32e4d03add';
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var hashBuf = new Buffer(hash, 'hex');
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var header = {
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hash: hash,
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prevHash: '91b58f19b6eecba94ed0f6e463e8e334ec0bcda7880e2985c82a8f32e4d03ade',
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version: 0x2000012,
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merkleRoot: '91b58f19b6eecba94ed0f6e463e8e334ec0bcda7880e2985c82a8f32e4d03adf',
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timestamp: 1E9,
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bits: 400000,
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nonce: 123456,
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height: 123,
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chainwork: '0000000000000000000000000000000000000000000000000000000200020002',
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nextHash: '91b58f19b6eecba94ed0f6e463e8e334ec0bcda7880e2985c82a8f32e4d03ade'
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};
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var versionBuf = new Buffer(4);
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var prevHashBuf = new Buffer(header.prevHash, 'hex');
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var nextHashBuf = new Buffer(header.nextHash, 'hex');
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var merkleRootBuf = new Buffer(header.merkleRoot, 'hex');
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var tsBuf = new Buffer(4);
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var bitsBuf = new Buffer(4);
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var nonceBuf = new Buffer(4);
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var heightBuf = new Buffer(4);
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var chainBuf = new Buffer('0000000000000000000000000000000000000000000000000000000200020002', 'hex');
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heightBuf.writeUInt32BE(header.height);
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it('should encode header hash key' , function() {
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encoding.encodeHeaderHashKey(hash).should.deep.equal(Buffer.concat([servicePrefix, hashPrefix, hashBuf]));
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});
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it('should decode header hash key', function() {
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encoding.decodeHeaderHashKey(Buffer.concat([servicePrefix, hashPrefix, hashBuf]))
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.should.deep.equal(hash);
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});
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it('should encode header height key' , function() {
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encoding.encodeHeaderHeightKey(header.height).should.deep.equal(Buffer.concat([servicePrefix, heightPrefix, heightBuf]));
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});
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it('should decode header height key', function() {
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encoding.decodeHeaderHeightKey(Buffer.concat([servicePrefix, heightPrefix, heightBuf]))
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.should.deep.equal(header.height);
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});
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it('should encode header value', function() {
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var prevHashBuf = new Buffer(header.prevHash, 'hex');
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versionBuf.writeInt32BE(header.version); // signed
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tsBuf.writeUInt32BE(header.timestamp);
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bitsBuf.writeUInt32BE(header.bits);
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nonceBuf.writeUInt32BE(header.nonce);
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heightBuf.writeUInt32BE(header.height);
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encoding.encodeHeaderValue(header).should.deep.equal(Buffer.concat([
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hashBuf,
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versionBuf,
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prevHashBuf,
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merkleRootBuf,
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tsBuf,
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bitsBuf,
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nonceBuf,
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heightBuf,
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chainBuf,
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nextHashBuf
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]));
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});
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it('should decode header value', function() {
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encoding.decodeHeaderValue(Buffer.concat([
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hashBuf,
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versionBuf,
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prevHashBuf,
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merkleRootBuf,
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tsBuf,
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bitsBuf,
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nonceBuf,
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heightBuf,
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chainBuf,
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nextHashBuf
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])).should.deep.equal(header);
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});
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});
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