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joplin/packages/app-cli/tests/InMemoryCache.ts

60 lines
1.6 KiB
TypeScript

import InMemoryCache from '@joplin/lib/InMemoryCache';
const time = require('@joplin/lib/time').default;
describe('InMemoryCache', function() {
it('should get and set values', () => {
const cache = new InMemoryCache();
expect(cache.value('test')).toBe(undefined);
expect(cache.value('test', 'default')).toBe('default');
cache.setValue('test', 'something');
expect(cache.value('test')).toBe('something');
// Check we get the exact same object back (cache should not copy)
const someObj = { abcd: '123' };
cache.setValue('someObj', someObj);
expect(cache.value('someObj')).toBe(someObj);
});
it('should expire values', async () => {
const cache = new InMemoryCache();
// Check that the value is udefined once the cache has expired
cache.setValue('test', 'something', 500);
expect(cache.value('test')).toBe('something');
await time.msleep(510);
expect(cache.value('test')).toBe(undefined);
// Check that the TTL is reset every time setValue is called
cache.setValue('test', 'something', 300);
await time.msleep(100);
cache.setValue('test', 'something', 300);
await time.msleep(100);
cache.setValue('test', 'something', 300);
await time.msleep(100);
cache.setValue('test', 'something', 300);
await time.msleep(100);
expect(cache.value('test')).toBe('something');
});
it('should delete old records', async () => {
const cache = new InMemoryCache(5);
cache.setValue('1', '1');
cache.setValue('2', '2');
cache.setValue('3', '3');
cache.setValue('4', '4');
cache.setValue('5', '5');
expect(cache.value('1')).toBe('1');
cache.setValue('6', '6');
expect(cache.value('1')).toBe(undefined);
});
});