def evaluate_model(model, test_set):
    """
    Evaluates trained model on test set
    :param model: Trained keras model
    :param test_set: (X_test, y_test)
    :return: (loss, accuracy)
    """
    (X_test, y_test) = test_set
    loss, acc = model.evaluate(X_test, y_test)

    return loss, acc