Doing retries with Promises

retryJquery.js

function retry(maxAttempts, millisecond, fn) {
    var deferred = $.Deferred();
    var attempts = 0;

    function wait(milliseconds) {
        var deferred = $.Deferred();
        setTimeout(deferred.resolve, milliseconds);
        return deferred.promise();
    }

    function execute(fn) {

        attempts++;

        fn().then(function (successResult) {

            deferred.resolve(successResult);

        }, function (failResult) {

            if (attempts >= maxAttempts) {
                deferred.reject(failResult);
                return;
            }

            wait(millisecond)
                .then(function () {
                execute(fn);
            });

        });
    }

    execute(fn);

    return deferred.promise();

}

retryPromise.js

function retry(maxAttempts, millisecond, fn)
{
  var deferred = Promise.defer();
  var attempts = 0;

  function execute(fn) {

    attempts++;

    fn().then(function (successResult) {

        deferred.resolve(successResult);

      }, function (failResult) {

        if (attempts >= maxAttempts ) {
          deferred.reject(failResult);
          return;
        }

        wait(millisecond)
        .then(function () {
          execute(fn);
        });

      });
  }

  execute(fn);

  return deferred.promise;

}

testCase.js

// ------- Test --------------------
function logAsync(message) {
    var deferred = $.Deferred();
    console.log(message);
    return deferred.resolve().promise();
}

function Foo(description) {

    this.description = description;
    this.succeedsAtThirdAttempt = succeedsAtThirdAttempt;

    var attempts = 0;

    function succeedsAtThirdAttempt() {
        attempts++;
        var deferred = $.Deferred();
        if (attempts < 3) {
            console.log(attempts + " " + description + " rejecting..");
            setTimeout(deferred.reject, 1000);
        } else {
            console.log(attempts + " " + description + " resolving..");
            setTimeout(deferred.resolve, 1000);
        }
        return deferred.promise();
    }

}

// should fail
var foo = new Foo("should fail");
retry(2, 200, foo.succeedsAtThirdAttempt)
    .then(function (result) {
    return logAsync("Succeeded " + foo.description);

}, function (result) {
    return logAsync("Failed    " + foo.description);

}).
then(function () {
    // should succeed
    var foo = new Foo("should succeed");
    retry(5, 200, foo.succeedsAtThirdAttempt)
        .then(function (result) {
        return logAsync("Succeeded " + foo.description);

    }, function (result) {
        return logAsync("Failed    " + foo.description);

    });

});