47 lines
1.0 KiB
JavaScript
47 lines
1.0 KiB
JavaScript
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var memoizer = require('./..');
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var assert = require('chai').assert;
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describe('lru-memoizer sync', function () {
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var loadTimes = 0, memoized;
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beforeEach(function () {
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loadTimes = 0;
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memoized = memoizer.sync({
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load: function (a, b) {
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loadTimes++;
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if (a === 0) {
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throw new Error('a cant be 0');
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}
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return a + b;
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},
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hash: function (a, b) {
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return a + '-' + b;
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},
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max: 10
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});
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});
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it('should cache the result of an async function', function () {
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var result = memoized(1, 2);
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assert.equal(result, 3);
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assert.equal(loadTimes, 1);
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var result2 = memoized(1,2);
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assert.equal(result2, 3);
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assert.equal(loadTimes, 1);
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});
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it('shuld use the hash function for keys', function () {
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memoized(1, 2);
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memoized(2, 3);
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assert.includeMembers(memoized.keys(), ['1-2', '2-3']);
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});
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it('should not cache errored funcs', function () {
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try {
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memoized(0, 2);
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} catch(err) {}
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assert.notInclude(memoized.keys(), ['0-2']);
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});
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});
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