public void testAddHeaders() {
   HttpRequestBase method = new HttpPost();
   EasSyncService svc = new EasSyncService();
   svc.mAuthString = "auth";
   svc.mProtocolVersion = "12.1";
   svc.mAccount = null;
   // With second argument false, there should be no header
   svc.setHeaders(method, false);
   Header[] headers = method.getHeaders("X-MS-PolicyKey");
   assertEquals(0, headers.length);
   // With second argument true, there should always be a header
   // The value will be "0" without an account
   method.removeHeaders("X-MS-PolicyKey");
   svc.setHeaders(method, true);
   headers = method.getHeaders("X-MS-PolicyKey");
   assertEquals(1, headers.length);
   assertEquals("0", headers[0].getValue());
   // With an account, but null security key, the header's value should be "0"
   Account account = new Account();
   account.mSecuritySyncKey = null;
   svc.mAccount = account;
   method.removeHeaders("X-MS-PolicyKey");
   svc.setHeaders(method, true);
   headers = method.getHeaders("X-MS-PolicyKey");
   assertEquals(1, headers.length);
   assertEquals("0", headers[0].getValue());
   // With an account and security key, the header's value should be the security key
   account.mSecuritySyncKey = "key";
   svc.mAccount = account;
   method.removeHeaders("X-MS-PolicyKey");
   svc.setHeaders(method, true);
   headers = method.getHeaders("X-MS-PolicyKey");
   assertEquals(1, headers.length);
   assertEquals("key", headers[0].getValue());
 }