293 lines
8.2 KiB
JavaScript
293 lines
8.2 KiB
JavaScript
'use strict';
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var bitcore = require('../..');
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var BN = require('../../lib/crypto/bn');
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var BufferReader = bitcore.encoding.BufferReader;
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var BufferWriter = bitcore.encoding.BufferWriter;
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var BlockHeader = bitcore.BlockHeader;
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var fs = require('fs');
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var should = require('chai').should();
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// https://test-insight.bitpay.com/block/000000000b99b16390660d79fcc138d2ad0c89a0d044c4201a02bdf1f61ffa11
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var dataRawBlockBuffer = fs.readFileSync('test/data/blk86756-testnet.dat');
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var dataRawBlockBinary = fs.readFileSync('test/data/blk86756-testnet.dat', 'binary');
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var dataRawId = '000000000b99b16390660d79fcc138d2ad0c89a0d044c4201a02bdf1f61ffa11';
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var data = require('../data/blk86756-testnet');
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describe('BlockHeader', function() {
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var version = data.version;
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var prevblockidbuf = new Buffer(data.prevblockidhex, 'hex');
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var merklerootbuf = new Buffer(data.merkleroothex, 'hex');
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var time = data.time;
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var bits = data.bits;
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var nonce = data.nonce;
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var bh = new BlockHeader({
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version: version,
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prevHash: prevblockidbuf,
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merkleRoot: merklerootbuf,
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time: time,
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bits: bits,
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nonce: nonce
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});
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var bhhex = data.blockheaderhex;
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var bhbuf = new Buffer(bhhex, 'hex');
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it('should make a new blockheader', function() {
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BlockHeader(bhbuf).toBuffer().toString('hex').should.equal(bhhex);
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});
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it('should not make an empty block', function() {
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(function() {
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BlockHeader();
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}).should.throw('Unrecognized argument for BlockHeader');
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});
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describe('#constructor', function() {
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it('should set all the variables', function() {
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var bh = new BlockHeader({
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version: version,
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prevHash: prevblockidbuf,
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merkleRoot: merklerootbuf,
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time: time,
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bits: bits,
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nonce: nonce
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});
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should.exist(bh.version);
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should.exist(bh.prevHash);
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should.exist(bh.merkleRoot);
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should.exist(bh.time);
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should.exist(bh.bits);
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should.exist(bh.nonce);
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});
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it('will throw an error if the argument object hash property doesn\'t match', function() {
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(function() {
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var bh = new BlockHeader({
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hash: '000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f',
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version: version,
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prevHash: prevblockidbuf,
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merkleRoot: merklerootbuf,
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time: time,
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bits: bits,
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nonce: nonce
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});
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}).should.throw('Argument object hash property does not match block hash.');
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});
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});
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describe('#fromObject', function() {
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it('should set all the variables', function() {
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var bh = BlockHeader.fromObject({
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version: version,
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prevHash: prevblockidbuf.toString('hex'),
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merkleRoot: merklerootbuf.toString('hex'),
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time: time,
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bits: bits,
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nonce: nonce
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});
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should.exist(bh.version);
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should.exist(bh.prevHash);
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should.exist(bh.merkleRoot);
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should.exist(bh.time);
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should.exist(bh.bits);
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should.exist(bh.nonce);
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});
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});
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describe('#toJSON', function() {
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it('should set all the variables', function() {
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var json = bh.toJSON();
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should.exist(json.version);
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should.exist(json.prevHash);
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should.exist(json.merkleRoot);
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should.exist(json.time);
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should.exist(json.bits);
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should.exist(json.nonce);
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});
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});
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describe('#fromJSON', function() {
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it('should parse this known json string', function() {
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var jsonString = JSON.stringify({
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version: version,
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prevHash: prevblockidbuf,
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merkleRoot: merklerootbuf,
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time: time,
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bits: bits,
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nonce: nonce
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});
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var json = new BlockHeader(JSON.parse(jsonString));
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should.exist(json.version);
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should.exist(json.prevHash);
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should.exist(json.merkleRoot);
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should.exist(json.time);
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should.exist(json.bits);
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should.exist(json.nonce);
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});
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});
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describe('#fromString/#toString', function() {
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it('should output/input a block hex string', function() {
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var b = BlockHeader.fromString(bhhex);
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b.toString().should.equal(bhhex);
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});
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});
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describe('#fromBuffer', function() {
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it('should parse this known buffer', function() {
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BlockHeader.fromBuffer(bhbuf).toBuffer().toString('hex').should.equal(bhhex);
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});
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});
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describe('#fromBufferReader', function() {
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it('should parse this known buffer', function() {
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BlockHeader.fromBufferReader(BufferReader(bhbuf)).toBuffer().toString('hex').should.equal(bhhex);
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});
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});
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describe('#toBuffer', function() {
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it('should output this known buffer', function() {
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BlockHeader.fromBuffer(bhbuf).toBuffer().toString('hex').should.equal(bhhex);
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});
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});
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describe('#toBufferWriter', function() {
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it('should output this known buffer', function() {
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BlockHeader.fromBuffer(bhbuf).toBufferWriter().concat().toString('hex').should.equal(bhhex);
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});
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it('doesn\'t create a bufferWriter if one provided', function() {
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var writer = new BufferWriter();
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var blockHeader = BlockHeader.fromBuffer(bhbuf);
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blockHeader.toBufferWriter(writer).should.equal(writer);
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});
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});
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describe('#inspect', function() {
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it('should return the correct inspect of the genesis block', function() {
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var block = BlockHeader.fromRawBlock(dataRawBlockBinary);
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block.inspect().should.equal('<BlockHeader '+dataRawId+'>');
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});
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});
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describe('#fromRawBlock', function() {
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it('should instantiate from a raw block binary', function() {
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var x = BlockHeader.fromRawBlock(dataRawBlockBinary);
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x.version.should.equal(2);
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new BN(x.bits).toString('hex').should.equal('1c3fffc0');
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});
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it('should instantiate from raw block buffer', function() {
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var x = BlockHeader.fromRawBlock(dataRawBlockBuffer);
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x.version.should.equal(2);
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new BN(x.bits).toString('hex').should.equal('1c3fffc0');
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});
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});
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describe('#validTimestamp', function() {
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var x = BlockHeader.fromRawBlock(dataRawBlockBuffer);
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it('should validate timpstamp as true', function() {
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var valid = x.validTimestamp(x);
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valid.should.equal(true);
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});
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it('should validate timestamp as false', function() {
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x.time = Math.round(new Date().getTime() / 1000) + BlockHeader.Constants.MAX_TIME_OFFSET + 100;
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var valid = x.validTimestamp(x);
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valid.should.equal(false);
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});
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});
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describe('#validProofOfWork', function() {
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it('should validate proof-of-work as true', function() {
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var x = BlockHeader.fromRawBlock(dataRawBlockBuffer);
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var valid = x.validProofOfWork(x);
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valid.should.equal(true);
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});
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it('should validate proof of work as false because incorrect proof of work', function() {
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var x = BlockHeader.fromRawBlock(dataRawBlockBuffer);
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var nonce = x.nonce;
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x.nonce = 0;
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var valid = x.validProofOfWork(x);
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valid.should.equal(false);
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x.nonce = nonce;
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});
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});
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describe('#getDifficulty', function() {
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it('should get the correct difficulty for block 86756', function() {
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var x = BlockHeader.fromRawBlock(dataRawBlockBuffer);
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x.bits.should.equal(0x1c3fffc0);
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x.getDifficulty().should.equal(4);
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});
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it('should get the correct difficulty for testnet block 552065', function() {
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var x = new BlockHeader({
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bits: 0x1b00c2a8
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});
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x.getDifficulty().should.equal(86187.62562209);
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});
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it('should get the correct difficulty for livenet block 373043', function() {
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var x = new BlockHeader({
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bits: 0x18134dc1
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});
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x.getDifficulty().should.equal(56957648455.01001);
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});
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it('should get the correct difficulty for livenet block 340000', function() {
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var x = new BlockHeader({
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bits: 0x1819012f
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});
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x.getDifficulty().should.equal(43971662056.08958);
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});
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it('should use exponent notation if difficulty is larger than Javascript number', function() {
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var x = new BlockHeader({
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bits: 0x0900c2a8
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});
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x.getDifficulty().should.equal(1.9220482782645836 * 1e48);
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});
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});
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it('coverage: caches the "_id" property', function() {
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var blockHeader = BlockHeader.fromRawBlock(dataRawBlockBuffer);
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blockHeader.id.should.equal(blockHeader.id);
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});
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});
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