@Test
public void testKeySet() {

    Set<String> keys = new HashSet<String>();
    for (int i = 0; i < Random.getScaleCount(); i++) {
        String key = Random.getSimpleString();
        keys.add(key);
        map.put(key, randomValueSet());
    }
    for (String key : map.keySet()) {
        Assert.assertTrue(keys.contains(key));
    }
    Assert.assertTrue(keys.size() == map.keySet().size());
}