944f29fe16
the test was randomly failing when getProofTime returns -0. Fixed by replacing strictEqual with ok.
89 lines
2.4 KiB
JavaScript
89 lines
2.4 KiB
JavaScript
/* eslint-env mocha */
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/* eslint prefer-arrow-callback: "off" */
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'use strict';
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const assert = require('./util/assert');
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const Chain = require('../lib/blockchain/chain');
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const ChainEntry = require('../lib/blockchain/chainentry');
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const Network = require('../lib/protocol/network');
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const network = Network.get('main');
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function random(max) {
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return Math.floor(Math.random() * max);
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}
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const chain = new Chain({
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memory: true,
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network
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});
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describe('Difficulty', function() {
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it('should open chain', async () => {
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await chain.open();
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});
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it('should get next work', async () => {
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const prev = new ChainEntry();
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prev.time = 1262152739;
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prev.bits = 0x1d00ffff;
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prev.height = 32255;
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const first = new ChainEntry();
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first.time = 1261130161;
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assert.strictEqual(chain.retarget(prev, first), 0x1d00d86a);
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});
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it('should get next work pow limit', async () => {
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const prev = new ChainEntry();
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prev.time = 1233061996;
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prev.bits = 0x1d00ffff;
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prev.height = 2015;
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const first = new ChainEntry();
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first.time = 1231006505;
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assert.strictEqual(chain.retarget(prev, first), 0x1d00ffff);
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});
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it('should get next work lower limit actual', async () => {
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const prev = new ChainEntry();
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prev.time = 1279297671;
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prev.bits = 0x1c05a3f4;
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prev.height = 68543;
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const first = new ChainEntry();
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first.time = 1279008237;
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assert.strictEqual(chain.retarget(prev, first), 0x1c0168fd);
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});
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it('should get next work upper limit actual', async () => {
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const prev = new ChainEntry();
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prev.time = 1269211443;
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prev.bits = 0x1c387f6f;
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prev.height = 46367;
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const first = new ChainEntry();
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first.time = 1263163443;
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assert.strictEqual(chain.retarget(prev, first), 0x1d00e1fd);
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});
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it('should get block proof equivalent time', async () => {
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const blocks = [];
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for (let i = 0; i < 10000; i++) {
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const prev = new ChainEntry();
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prev.height = i;
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prev.time = 1269211443 + i * network.pow.targetSpacing;
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prev.bits = 0x207fffff;
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if (i > 0)
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prev.chainwork = prev.getProof().addn(blocks[i-1].chainwork.toNumber());
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blocks[i] = prev;
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}
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chain.tip = blocks[blocks.length - 1];
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for (let j = 0; j < 1000; j++) {
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const p1 = blocks[random(blocks.length)];
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const p2 = blocks[random(blocks.length)];
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const tdiff = chain.getProofTime(p1, p2);
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assert.ok(tdiff === p1.time - p2.time);
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}
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});
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});
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