text: describe('Cache#keySet()', function () {
    it('should return the set of keys of all items in the cache.', function () {
      var itemKeys = ['item1', 'item2', 'item3'];
  
      var cache = TestCacheFactory('DSCache.keySet.cache');
  
      cache.put(itemKeys[0], itemKeys[0]);
      cache.put(itemKeys[1], itemKeys[1]);
      cache.put(itemKeys[2], itemKeys[2]);
  
      var keySet = cache.keySet();
  
      assert.equal(keySet.hasOwnProperty(itemKeys[0]), true);
      assert.equal(keySet.hasOwnProperty(itemKeys[1]), true);
      assert.equal(keySet.hasOwnProperty(itemKeys[2]), true);
  
      assert.equal(keySet[itemKeys[0]], itemKeys[0]);
      assert.equal(keySet[itemKeys[1]], itemKeys[1]);
      assert.equal(keySet[itemKeys[2]], itemKeys[2]);
  
      cache.remove(itemKeys[0]);
      cache.remove(itemKeys[1]);
      cache.remove(itemKeys[2]);
  
      keySet = cache.keySet();
  
      assert.equal(keySet.hasOwnProperty(itemKeys[0]), false);
      assert.equal(keySet.hasOwnProperty(itemKeys[1]), false);
      assert.equal(keySet.hasOwnProperty(itemKeys[2]), false);
    });
  });
  