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6161f94910
refs: https://github.com/TryGhost/Toolbox/issues/595 We're rolling out new rules around the node assert library, the first of which is enforcing the use of assert/strict. This means we don't need to use the strict version of methods, as the standard version will work that way by default. This caught some gotchas in our existing usage of assert where the lack of strict mode had unexpected results: - Url matching needs to be done on `url.href` seeaa58b354a4- Null and undefined are not the same thing, there were a few cases of this being confused - Particularly questionable changes in [PostExporter tests](c1a468744b) tracked [here](https://github.com/TryGhost/Team/issues/3505). - A typo seeeaac9c293aMoving forward, using assert strict should help us to catch unexpected behaviour, particularly around nulls and undefineds during implementation.
103 lines
3.4 KiB
JavaScript
103 lines
3.4 KiB
JavaScript
const assert = require('assert/strict');
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const MemoryTTLCache = require('../index');
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const sleep = ms => (
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new Promise((resolve) => {
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setTimeout(resolve, ms);
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})
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);
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describe('Cache Adapter In Memory with Time To Live', function () {
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it('Can initialize a cache instance', function () {
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const cache = new MemoryTTLCache();
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assert.ok(cache);
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});
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describe('get', function () {
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it('Can get a value from the cache', async function () {
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const cache = new MemoryTTLCache({});
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cache.set('a', 'b');
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assert.equal(cache.get('a'), 'b', 'should get the value from the cache');
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await sleep(100);
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assert.equal(cache.get('a'), 'b', 'should get the value from the cache after some time');
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});
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it.skip('Can get a value from the cache before TTL kicks in', async function () {
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const cache = new MemoryTTLCache({ttl: 50});
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cache.set('a', 'b');
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assert.equal(cache.get('a'), 'b', 'should get the value from the cache');
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await sleep(20);
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assert.equal(cache.get('a'), 'b', 'should get the value from the cache before TTL time');
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// NOTE: 20 + 200 = 220, which is more than 50 TTL
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await sleep(200);
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assert.equal(cache.get('a'), undefined, 'should NOT get the value from the cache after TTL time');
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});
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});
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describe('set', function () {
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it.skip('Can set a value in the cache', async function () {
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const cache = new MemoryTTLCache({ttl: 50});
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cache.set('a', 'b');
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assert.equal(cache.get('a'), 'b', 'should get the value from the cache');
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await sleep(20);
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assert.equal(cache.get('a'), 'b', 'should get the value from the cache after time < TTL');
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await sleep(200);
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assert.equal(cache.get('a'), undefined, 'should NOT get the value from the cache after TTL time');
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});
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it.skip('Can override TTL time', async function () {
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const cache = new MemoryTTLCache({ttl: 20});
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cache.set('a', 'b', {ttl: 50});
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await sleep(21);
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assert.equal(cache.get('a'), 'b', 'should get the value from the cache');
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await sleep(200);
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assert.equal(cache.get('a'), undefined, 'should NOT get the value from the cache after TTL time');
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});
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});
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describe('reset', function () {
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it('Can reset the cache', async function () {
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const cache = new MemoryTTLCache({ttl: 150});
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cache.set('a', 'b');
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cache.set('c', 'd');
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assert.equal(cache.get('a'), 'b', 'should get the value from the cache');
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assert.equal(cache.get('c'), 'd', 'should get the value from the cache');
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cache.reset();
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assert.equal(cache.get('a'), undefined, 'should NOT get the value from the cache after reset');
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assert.equal(cache.get('c'), undefined, 'should NOT get the value from the cache after reset');
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});
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});
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describe('keys', function () {
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it('Can get all keys from the cache', async function () {
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const cache = new MemoryTTLCache({ttl: 200});
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cache.set('a', 'b');
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cache.set('c', 'd');
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assert.deepEqual(cache.keys(), ['a', 'c'], 'should get all keys from the cache');
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});
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});
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});
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