53 lines
1.8 KiB
JavaScript
53 lines
1.8 KiB
JavaScript
'use strict';
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var _ = require('lodash');
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var expect = require('chai').expect;
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var bitcore = require('..');
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var HDPrivateKey = bitcore.HDPrivateKey;
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var xprivkey = 'xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi';
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describe('HDKey cache', function() {
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this.timeout(10000);
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/* jshint unused: false */
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var cache = bitcore._HDKeyCache;
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var master = new HDPrivateKey(xprivkey);
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beforeEach(function() {
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cache._cache = {};
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cache._count = 0;
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cache._eraseIndex = 0;
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cache._usedIndex = {};
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cache._usedList = {};
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cache._CACHE_SIZE = 3; // Reduce for quick testing
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});
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it('saves a derived key', function() {
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var child = master.derive(0);
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expect(cache._cache[master.xprivkey + '/0/false'].xprivkey).to.equal(child.xprivkey);
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});
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it('starts erasing unused keys', function() {
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var child1 = master.derive(0);
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var child2 = child1.derive(0);
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var child3 = child2.derive(0);
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expect(cache._cache[master.xprivkey + '/0/false'].xprivkey).to.equal(child1.xprivkey);
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var child4 = child3.derive(0);
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expect(cache._cache[master.xprivkey + '/0/false']).to.equal(undefined);
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});
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it('avoids erasing keys that get cache hits ("hot keys")', function() {
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var child1 = master.derive(0);
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var child2 = master.derive(0).derive(0);
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expect(cache._cache[master.xprivkey + '/0/false'].xprivkey).to.equal(child1.xprivkey);
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var child1_copy = master.derive(0);
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expect(cache._cache[master.xprivkey + '/0/false'].xprivkey).to.equal(child1.xprivkey);
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});
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it('keeps the size of the cache small', function() {
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var child1 = master.derive(0);
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var child2 = child1.derive(0);
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var child3 = child2.derive(0);
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var child4 = child3.derive(0);
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expect(_.size(cache._cache)).to.equal(3);
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});
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});
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