const InMemoryCacheAdapter = require('../lib/Adapters/Cache/InMemoryCacheAdapter')

.default;

describe('InMemoryCacheAdapter', function() {

const KEY = 'hello';

const VALUE = 'world';

function wait(sleep) {

return new Promise(function(resolve) {

setTimeout(resolve, sleep);

});

}

it('should expose promisifyed methods', done => {

const cache = new InMemoryCacheAdapter({

ttl: NaN,

});

// Verify all methods return promises.

Promise.all([

cache.put(KEY, VALUE),

cache.del(KEY),

cache.get(KEY),

cache.clear(),

]).then(() => {

done();

});

});

it('should get/set/clear', done => {

const cache = new InMemoryCacheAdapter({

ttl: NaN,

});

cache

.put(KEY, VALUE)

.then(() => cache.get(KEY))

.then(value => expect(value).toEqual(VALUE))

.then(() => cache.clear())

.then(() => cache.get(KEY))

.then(value => expect(value).toEqual(null))

.then(done);

});

it('should expire after ttl', done => {

const cache = new InMemoryCacheAdapter({

ttl: 10,

});

cache

.put(KEY, VALUE)

.then(() => cache.get(KEY))

.then(value => expect(value).toEqual(VALUE))

.then(wait.bind(null, 50))

.then(() => cache.get(KEY))

.then(value => expect(value).toEqual(null))

.then(done);

});

});