<?php
/*
Plugin Name: Test 1 Plugin Management in folder
Plugin URI: http://www.santosj.name
Description: This is a test
Author: Jacob Santos
Version: 0.0
Author URI: http://www.santosj.name
 */

function test1_pre_upgrade_hook($null)
{
	return true;
}

function test1_post_upgrade_hook($pre_hook_result)
{
	echo "Pre upgrade Hook Result should have been true, it is: ";
	var_dump($pre_hook_result);
}

add_filter('pre_upgrade_test-plugin-folder/test1.php', 'test1_pre_upgrade_hook');
add_action('post_upgrade_test-plugin-folder/test1.php', 'test1_post_upgrade_hook');