public void testSyncID() {
    SyncConfiguration config = null;
    SharedPreferences prefs = getPrefs(TEST_PREFS_NAME, 0);

    config = new SyncConfiguration(TEST_PREFS_NAME, this);
    config.syncID = "test1";
    config.persistToPrefs();
    assertTrue(prefs.contains(SyncConfiguration.PREF_SYNC_ID));
    config = new SyncConfiguration(TEST_PREFS_NAME, this);
    assertEquals("test1", config.syncID);
  }
  public void testEnabledEngineNames() {
    SyncConfiguration config = null;
    SharedPreferences prefs = getPrefs(TEST_PREFS_NAME, 0);

    config = new SyncConfiguration(TEST_PREFS_NAME, this);
    config.enabledEngineNames = new HashSet<String>();
    config.enabledEngineNames.add("test1");
    config.enabledEngineNames.add("test2");
    config.persistToPrefs();
    assertTrue(prefs.contains(SyncConfiguration.PREF_ENABLED_ENGINE_NAMES));
    config = new SyncConfiguration(TEST_PREFS_NAME, this);
    Set<String> expected = new HashSet<String>();
    for (String name : new String[] {"test1", "test2"}) {
      expected.add(name);
    }
    assertEquals(expected, config.enabledEngineNames);

    config.enabledEngineNames = null;
    config.persistToPrefs();
    assertFalse(prefs.contains(SyncConfiguration.PREF_ENABLED_ENGINE_NAMES));
    config = new SyncConfiguration(TEST_PREFS_NAME, this);
    assertNull(config.enabledEngineNames);
  }