var InMemoryCacheAdapter = require('../src/Adapters/Cache/InMemoryCacheAdapter').default;

describe('InMemoryCacheAdapter', function() {
  var KEY = 'hello';
  var VALUE = 'world';

  function wait(sleep) {
    return new Promise(function(resolve, reject) {
      setTimeout(resolve, sleep);
    })
  }

  it('should expose promisifyed methods', (done) => {
    var cache = new InMemoryCacheAdapter({
      ttl: NaN
    });

    var noop = () => {};

    // 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) => {
    var 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) => {
    var 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);
  })

});