96 lines
2.2 KiB
JavaScript
96 lines
2.2 KiB
JavaScript
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const memoizer = require('./..');
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const sinon = require('sinon');
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describe('lru-memoizer sync (events)', function () {
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let memoized;
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let onMiss, onHit, onQueue;
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beforeEach(function () {
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loadTimes = 0;
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onMiss = sinon.stub();
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onHit = sinon.stub();
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onQueue = sinon.stub();
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memoized = memoizer.sync({
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load: function (a, b, bypass) {
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return a + b;
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},
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hash: function (a, b, bypass) {
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return a + '-' + b;
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},
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bypass: function(a, b, bypass) {
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return bypass;
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},
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max: 10
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});
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memoized.on('hit', onHit);
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memoized.on('miss', onMiss);
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memoized.on('queue', onQueue);
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});
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describe('when the result is not in the cache', () => {
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beforeEach(() => {
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memoized(1, 2, false);
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});
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it('should not call onHit', () => {
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sinon.assert.notCalled(onHit);
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});
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it('should not call onQueue', () => {
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sinon.assert.notCalled(onQueue);
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});
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it('should call onMiss with the load arguments', () => {
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sinon.assert.calledOnce(onMiss);
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sinon.assert.calledWith(onMiss, 1, 2, false);
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});
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});
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describe('when the result is in the cache', () => {
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beforeEach(() => {
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memoized(1,2, false);
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onHit.reset();
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onMiss.reset();
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onQueue.reset();
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memoized(1, 2, false);
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});
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it('should call onHit with the load arguments', () => {
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sinon.assert.calledOnce(onHit);
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sinon.assert.calledWith(onHit, 1, 2, false);
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});
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it('should not call onQueue', () => {
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sinon.assert.notCalled(onQueue);
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});
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it('should not call onMiss', () => {
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sinon.assert.notCalled(onQueue);
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});
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});
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describe('when the cache is by passed', () => {
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beforeEach(() => {
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memoized(1,2, false);
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onHit.reset();
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onMiss.reset();
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onQueue.reset();
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memoized(1, 2, true);
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});
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it('should not call onHit', () => {
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sinon.assert.notCalled(onHit);
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});
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it('should not call onQueue', () => {
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sinon.assert.notCalled(onQueue);
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});
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it('should call onMiss with the load arguments', () => {
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sinon.assert.calledOnce(onMiss);
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sinon.assert.calledWith(onMiss, 1, 2, true);
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});
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});
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});
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