diff --git a/tests/Bootstrap.php b/tests/Bootstrap.php
new file mode 100644
index 0000000..94dafdc
--- /dev/null
+++ b/tests/Bootstrap.php
@@ -0,0 +1,20 @@
+<?php
+
+// Errors on full!
+ini_set('display_errors', 1);
+error_reporting(E_ALL | E_STRICT);
+
+$dir = realpath(dirname(__FILE__));
+
+
+// Path constants
+define('PROJECT_BASE',	realpath($dir.'/../').'/');
+define('BASEPATH',		PROJECT_BASE.'system/');
+define('APPPATH',		PROJECT_BASE.'application/');
+
+
+// Prep our test environment
+require_once $dir.'/lib/common.php';
+require_once $dir.'/lib/ci_testcase.php';
+
+unset($dir);
\ No newline at end of file
diff --git a/tests/codeigniter/Setup_test.php b/tests/codeigniter/Setup_test.php
new file mode 100644
index 0000000..e088b51
--- /dev/null
+++ b/tests/codeigniter/Setup_test.php
@@ -0,0 +1,13 @@
+<?php
+
+class Setup_test extends PHPUnit_Framework_TestCase {
+	
+	function testNonsense()
+	{
+		$this->markTestIncomplete('not implemented');
+		// ensure that our bootstrapped test environment
+		// is a good representation of an isolated CI install
+		//die('here');
+	}
+	
+}
\ No newline at end of file
diff --git a/tests/codeigniter/core/Config_test.php b/tests/codeigniter/core/Config_test.php
new file mode 100644
index 0000000..b04dd67
--- /dev/null
+++ b/tests/codeigniter/core/Config_test.php
@@ -0,0 +1,93 @@
+<?php
+
+class Config_test extends CI_TestCase {
+
+	public function setUp()
+	{
+		$cls =& $this->ci_core_class('cfg');
+				
+		// set predictable config values
+		$this->ci_set_config(array(
+			'index_page'		=> 'index.php',
+			'base_url'			=> 'http://example.com/',
+			'subclass_prefix'	=> 'MY_'
+		));
+
+		$this->config = new $cls;	
+	}
+	
+	// --------------------------------------------------------------------
+
+	public function testItem()
+	{
+		$this->assertEquals('http://example.com/', $this->config->item('base_url'));
+
+		// Bad Config value
+		$this->assertFalse($this->config->item('no_good_item'));
+		
+		// Index
+		$this->assertFalse($this->config->item('no_good_item', 'bad_index'));
+		$this->assertFalse($this->config->item('no_good_item', 'default'));
+	}
+	
+	// --------------------------------------------------------------------
+	
+	public function testSetItem()
+	{
+		$this->assertFalse($this->config->item('not_yet_set'));
+		
+		$this->config->set_item('not_yet_set', 'is set');
+		
+		$this->assertEquals('is set', $this->config->item('not_yet_set'));
+	}
+
+	// --------------------------------------------------------------------
+	
+	public function testSlashItem()
+	{
+		// Bad Config value
+		$this->assertFalse($this->config->slash_item('no_good_item'));
+		
+		$this->assertEquals('http://example.com/', $this->config->slash_item('base_url'));
+
+		$this->assertEquals('MY_/', $this->config->slash_item('subclass_prefix'));
+	}
+
+	// --------------------------------------------------------------------
+
+	public function testSiteUrl()
+	{
+		$this->assertEquals('http://example.com/index.php', $this->config->site_url());
+		
+		$base_url = $this->config->item('base_url');
+		
+		$this->config->set_item('base_url', '');
+		
+		$q_string = $this->config->item('enable_query_strings');
+		
+		$this->config->set_item('enable_query_strings', FALSE);
+
+		$this->assertEquals('/index.php/test', $this->config->site_url('test'));
+		$this->assertEquals('/index.php/test/1', $this->config->site_url(array('test', '1')));
+		
+		$this->config->set_item('enable_query_strings', TRUE);
+
+		$this->assertEquals('/index.php?test', $this->config->site_url('test'));
+		$this->assertEquals('/index.php?0=test&1=1', $this->config->site_url(array('test', '1')));
+		
+		$this->config->set_item('base_url', $base_url);
+
+		$this->assertEquals('http://example.com/index.php?test', $this->config->site_url('test'));
+		
+		// back to home base
+		$this->config->set_item('enable_query_strings', $q_string);				
+	}
+
+	// --------------------------------------------------------------------
+	
+	public function testSystemUrl()
+	{
+		$this->assertEquals('http://example.com/system/', $this->config->system_url());
+	}
+
+}
\ No newline at end of file
diff --git a/tests/codeigniter/core/Lang_test.php b/tests/codeigniter/core/Lang_test.php
new file mode 100644
index 0000000..f65b335
--- /dev/null
+++ b/tests/codeigniter/core/Lang_test.php
@@ -0,0 +1,31 @@
+<?php
+
+class Lang_test extends CI_TestCase {
+	
+	protected $lang;
+	
+	public function setUp()
+	{
+		$cls = $this->ci_core_class('lang');
+		$this->lang = new $cls;
+	}
+	
+	// --------------------------------------------------------------------
+	
+	public function testLoad()
+	{
+		// get_config needs work
+		$this->markTestIncomplete('get_config needs work');
+		//$this->assertTrue($this->lang->load('profiler'));
+	}
+	
+	// --------------------------------------------------------------------
+
+	public function testLine()
+	{
+		$this->markTestIncomplete('get_config needs work');
+		
+		$this->assertEquals('URI STRING', $this->lang->line('profiler_uri_string'));
+	}
+	
+}
\ No newline at end of file
diff --git a/tests/codeigniter/core/Loader_test.php b/tests/codeigniter/core/Loader_test.php
new file mode 100644
index 0000000..55ab9a4
--- /dev/null
+++ b/tests/codeigniter/core/Loader_test.php
@@ -0,0 +1,259 @@
+<?php
+
+require_once 'vfsStream/vfsStream.php';
+require_once BASEPATH.'/core/Loader.php';
+
+class Extended_Loader extends CI_Loader {
+	
+	/**
+	 * Since we use paths to load up models, views, etc, we need the ability to
+	 * mock up the file system so when core tests are run, we aren't mucking
+	 * in the application directory.  this will give finer grained control over
+	 * these tests.  So yeah, while this looks odd, I need to overwrite protected
+	 * class vars in the loader.  So here we go...
+	 *
+	 * @covers CI_Loader::__construct()
+	 */
+	public function __construct()
+	{
+		vfsStreamWrapper::register();
+		vfsStreamWrapper::setRoot(new vfsStreamDirectory('application'));
+		
+		$this->models_dir 	= vfsStream::newDirectory('models')->at(vfsStreamWrapper::getRoot());
+		$this->libs_dir 	= vfsStream::newDirectory('libraries')->at(vfsStreamWrapper::getRoot());
+		$this->helpers_dir 	= vfsStream::newDirectory('helpers')->at(vfsStreamWrapper::getRoot());
+		$this->views_dir 	= vfsStream::newDirectory('views')->at(vfsStreamWrapper::getRoot());
+		
+		$this->_ci_ob_level  		= ob_get_level();
+		$this->_ci_library_paths	= array(vfsStream::url('application').'/', BASEPATH);
+		$this->_ci_helper_paths 	= array(vfsStream::url('application').'/', BASEPATH);
+		$this->_ci_model_paths 		= array(vfsStream::url('application').'/');
+		$this->_ci_view_paths 		= array(vfsStream::url('application').'/views/' => TRUE);
+	}
+}
+
+
+class Loader_test extends CI_TestCase {
+	
+	private $ci_obj;
+	
+	public function setUp()
+	{
+		// Instantiate a new loader
+		$this->load = new Extended_Loader();
+		
+		// mock up a ci instance
+		$this->ci_obj = new StdClass;
+		
+		// Fix get_instance()
+		$this->ci_instance($this->ci_obj);
+	}
+
+	// --------------------------------------------------------------------
+	
+	public function testLibrary()
+	{
+		$this->_setup_config_mock();
+		
+		// Test loading as an array.
+		$this->assertNull($this->load->library(array('table')));
+		$this->assertTrue(class_exists('CI_Table'), 'Table class exists');
+		$this->assertAttributeInstanceOf('CI_Table', 'table', $this->ci_obj);
+		
+		// Test no lib given
+		$this->assertEquals(FALSE, $this->load->library());
+		
+		// Test a string given to params
+		$this->assertEquals(NULL, $this->load->library('table', ' '));
+	}
+
+	// --------------------------------------------------------------------
+
+	public function testLoadLibraryInApplicationDir()
+	{
+		$this->_setup_config_mock();
+		
+		$content = '<?php class Super_test_library {} ';
+		
+		$model = vfsStream::newFile('Super_test_library.php')->withContent($content)
+														->at($this->load->libs_dir);
+		
+		$this->assertNull($this->load->library('super_test_library'));
+		
+		// Was the model class instantiated.
+		$this->assertTrue(class_exists('Super_test_library'));		
+	}
+	
+	// --------------------------------------------------------------------
+	
+	private function _setup_config_mock()
+	{
+		// Mock up a config object until we
+		// figure out how to test the library configs
+		$config = $this->getMock('CI_Config', NULL, array(), '', FALSE);
+		$config->expects($this->any())
+			   ->method('load')
+			   ->will($this->returnValue(TRUE));
+		
+		// Add the mock to our stdClass
+		$this->ci_instance_var('config', $config);
+	}
+
+	// --------------------------------------------------------------------
+
+	
+	public function testNonExistentModel()
+	{
+		$this->setExpectedException(
+			'Exception',
+			'CI Error: Unable to locate the model you have specified: ci_test_nonexistent_model.php'
+			);
+			
+		$this->load->model('ci_test_nonexistent_model.php');
+	}
+
+	// --------------------------------------------------------------------
+	
+	/**
+	 * @coverts CI_Loader::model
+	 */
+	public function testModels()
+	{
+		$this->ci_set_core_class('model', 'CI_Model');
+		
+		$content = '<?php class Unit_test_model extends CI_Model {} ';
+		
+		$model = vfsStream::newFile('unit_test_model.php')->withContent($content)
+														->at($this->load->models_dir);
+		
+		$this->assertNull($this->load->model('unit_test_model'));
+		
+		// Was the model class instantiated.
+		$this->assertTrue(class_exists('Unit_test_model'));
+		
+		// Test no model given
+		$this->assertNull($this->load->model(''));	
+	}
+
+	// --------------------------------------------------------------------
+	
+	// public function testDatabase()
+	// {
+	// 	$this->assertEquals(NULL, $this->load->database());
+	// 	$this->assertEquals(NULL, $this->load->dbutil());		
+	// }
+
+	// --------------------------------------------------------------------
+	
+	/**
+	 * @coverts CI_Loader::view
+	 */
+	public function testLoadView()
+	{
+		$this->ci_set_core_class('output', 'CI_Output');
+		
+		$content = 'This is my test page.  <?php echo $hello; ?>';
+		$view = vfsStream::newFile('unit_test_view.php')->withContent($content)
+														->at($this->load->views_dir);
+		
+		// Use the optional return parameter in this test, so the view is not
+		// run through the output class.
+		$this->assertEquals('This is my test page.  World!',
+			$this->load->view('unit_test_view', array('hello' => "World!"), TRUE));
+		
+	}
+
+	// --------------------------------------------------------------------
+	
+	/**
+	 * @coverts CI_Loader::view
+	 */
+	public function testNonExistentView()
+	{
+		$this->setExpectedException(
+			'Exception',
+			'CI Error: Unable to load the requested file: ci_test_nonexistent_view.php'
+			);
+			
+		$this->load->view('ci_test_nonexistent_view', array('foo' => 'bar'));
+	}
+
+	// --------------------------------------------------------------------
+
+	public function testFile()
+	{
+		// I'm not entirely sure this is the proper way to handle this.
+		// $this->load->file('foo');
+		
+	}
+
+	// --------------------------------------------------------------------
+	
+	public function testVars()
+	{
+		$vars = array(
+			'foo'	=> 'bar'
+		);
+		
+		$this->assertNull($this->load->vars($vars));
+		$this->assertNull($this->load->vars('foo', 'bar'));
+	}
+
+	// --------------------------------------------------------------------
+	
+	public function testHelper()
+	{
+		$this->assertEquals(NULL, $this->load->helper('array'));
+		
+		$this->setExpectedException(
+			'Exception',
+			'CI Error: Unable to load the requested file: helpers/bad_helper.php'
+			);
+		
+		
+		$this->load->helper('bad');
+	}
+	
+	// --------------------------------------------------------------------
+
+	public function testLoadingMultipleHelpers()
+	{
+		$this->assertEquals(NULL, $this->load->helpers(array('file', 'array', 'string')));
+	}
+	
+	// --------------------------------------------------------------------
+	
+	// public function testLanguage()
+	// {
+	// 	$this->assertEquals(NULL, $this->load->language('test'));
+	// }	
+
+	// --------------------------------------------------------------------
+
+	public function testLoadConfig()
+	{
+		$this->_setup_config_mock();
+		
+		$this->assertNull($this->load->config('config', FALSE));
+	}
+	
+	// --------------------------------------------------------------------
+
+	public function testLoadBadConfig()
+	{
+		$this->_setup_config_mock();
+		
+		$this->setExpectedException(
+			'Exception',
+			'CI Error: The configuration file foobar.php does not exist.'
+			);
+		
+		$this->load->config('foobar', FALSE);
+	}
+
+	// --------------------------------------------------------------------
+	
+	
+	
+	
+}
\ No newline at end of file
diff --git a/tests/codeigniter/helpers/Array_helper_test.php b/tests/codeigniter/helpers/Array_helper_test.php
new file mode 100644
index 0000000..bbefdb4
--- /dev/null
+++ b/tests/codeigniter/helpers/Array_helper_test.php
@@ -0,0 +1,49 @@
+<?php
+
+// OLD TEST FORMAT: DO NOT COPY
+
+require_once(BASEPATH.'helpers/array_helper.php');
+
+class Array_helper_test extends PHPUnit_Framework_TestCase
+{
+	public function setUp()
+	{
+		$this->my_array = array(
+			'foo'		=> 'bar',
+			'sally'		=> 'jim',
+			'maggie'	=> 'bessie',
+			'herb'		=> 'cook'
+		);
+	}
+	
+	// ------------------------------------------------------------------------
+	
+	public function testElementWithExistingItem()
+	{	
+		$this->assertEquals(FALSE, element('testing', $this->my_array));
+		
+		$this->assertEquals('not set', element('testing', $this->my_array, 'not set'));
+		
+		$this->assertEquals('bar', element('foo', $this->my_array));
+	}
+	
+	// ------------------------------------------------------------------------	
+
+	public function testRandomElement()
+	{
+		// Send a string, not an array to random_element
+		$this->assertEquals('my string', random_element('my string'));
+		
+		// Test sending an array
+		$this->assertEquals(TRUE, in_array(random_element($this->my_array), $this->my_array));
+	}
+
+	// ------------------------------------------------------------------------	
+	
+	public function testElements()
+	{
+		$this->assertEquals(TRUE, is_array(elements('test', $this->my_array)));
+		$this->assertEquals(TRUE, is_array(elements('foo', $this->my_array)));
+	}
+
+}
\ No newline at end of file
diff --git a/tests/codeigniter/libraries/Parser_test.php b/tests/codeigniter/libraries/Parser_test.php
new file mode 100644
index 0000000..a8de108
--- /dev/null
+++ b/tests/codeigniter/libraries/Parser_test.php
@@ -0,0 +1,125 @@
+<?php
+
+// OLD TEST FORMAT: DO NOT COPY
+
+class Parser_test extends PHPUnit_Framework_TestCase
+{
+	static $cls;
+	protected $parser;
+	
+	public static function setUpBeforeClass()
+	{
+		$CI = get_instance();
+		$CI->load->library('parser');
+		self::$cls = get_class($CI->parser);
+	}
+
+	// --------------------------------------------------------------------
+	
+	public function setUp()
+	{
+		$cls = self::$cls;
+		$this->parser = new $cls;
+	}
+	// --------------------------------------------------------------------
+	
+	public function testSetDelimiters()
+	{
+		// Make sure default delimiters are there
+		$this->assertEquals('{', $this->parser->l_delim);
+		$this->assertEquals('}', $this->parser->r_delim);
+		
+		// Change them to square brackets
+		$this->parser->set_delimiters('[', ']');
+		
+		// Make sure they changed
+		$this->assertEquals('[', $this->parser->l_delim);
+		$this->assertEquals(']', $this->parser->r_delim);
+		
+		// Reset them
+		$this->parser->set_delimiters();
+		
+		// Make sure default delimiters are there
+		$this->assertEquals('{', $this->parser->l_delim);
+		$this->assertEquals('}', $this->parser->r_delim);
+	}
+	
+	// --------------------------------------------------------------------
+	
+	public function testParseSimpleString()
+	{
+		$data = array(
+			'title' => 'Page Title',
+			'body' => 'Lorem ipsum dolor sit amet.'
+		);
+		
+		$template = "{title}\n{body}";
+		
+		$result = implode("\n", $data);
+		
+		$this->assertEquals($result, $this->parser->parse_string($template, $data, TRUE));
+	}
+	
+	// --------------------------------------------------------------------
+
+	public function testParse()
+	{
+		$this->_parse_no_template();
+		$this->_parse_var_pair();
+		$this->_mismatched_var_pair();
+	}
+
+	// --------------------------------------------------------------------
+
+	private function _parse_no_template()
+	{
+		$this->assertFalse($this->parser->parse_string('', '', TRUE));
+	}
+
+	// --------------------------------------------------------------------
+
+	private function _parse_var_pair()
+	{
+		$data = array(
+			'title'		=> 'Super Heroes',
+			'powers'	=> array(
+					array(
+						'invisibility'	=> 'yes',
+						'flying'		=> 'no'),
+			)
+		);
+		
+		$template = "{title}\n{powers}{invisibility}\n{flying}{/powers}";
+		
+		$result = "Super Heroes\nyes\nno";
+		
+		$this->assertEquals($result, $this->parser->parse_string($template, $data, TRUE));	
+	}
+
+	// --------------------------------------------------------------------
+
+	private function _mismatched_var_pair()
+	{
+		$data = array(
+			'title'		=> 'Super Heroes',
+			'powers'	=> array(
+					array(
+						'invisibility'	=> 'yes',
+						'flying'		=> 'no'),
+			)
+		);
+		
+		$template = "{title}\n{powers}{invisibility}\n{flying}";
+		
+		$result = "Super Heroes\n{powers}{invisibility}\n{flying}";
+		
+		$this->assertEquals($result, $this->parser->parse_string($template, $data, TRUE));			
+	}
+
+	// --------------------------------------------------------------------
+
+	// --------------------------------------------------------------------
+
+	// --------------------------------------------------------------------
+
+}
\ No newline at end of file
diff --git a/tests/lib/ci_testcase.php b/tests/lib/ci_testcase.php
new file mode 100644
index 0000000..10539a3
--- /dev/null
+++ b/tests/lib/ci_testcase.php
@@ -0,0 +1,155 @@
+<?php
+
+
+// Need a way to change dependencies (core libs and laoded libs)
+// Need a way to set the CI class
+
+class CI_TestCase extends PHPUnit_Framework_TestCase {
+	
+	protected $ci_config;
+	protected $ci_instance;
+	protected static $ci_test_instance;
+		
+	private $global_map = array(
+		'benchmark'	=> 'bm',
+		'config'	=> 'cfg',
+		'hooks'		=> 'ext',
+		'utf8'		=> 'uni',
+		'router'	=> 'rtr',
+		'output'	=> 'out',
+		'security'	=> 'sec',
+		'input'		=> 'in',
+		'lang'		=> 'lang',
+		// @todo the loader is an edge case
+		'loader'	=> 'load',
+		'model'		=> 'model'
+	);
+	
+	public function __construct()
+	{
+		parent::__construct();
+		
+		$this->ci_config = array();
+	}
+	
+	// --------------------------------------------------------------------
+	
+	function ci_set_config($key, $val = '')
+	{
+		if (is_array($key))
+		{
+			$this->ci_config = $key;
+		}
+		else
+		{
+			$this->ci_config[$key] = $val;
+		}
+	}
+	
+	// --------------------------------------------------------------------
+	
+	function ci_instance($obj = FALSE)
+	{
+		if ( ! is_object($obj))
+		{
+			return $this->ci_instance;
+		}
+		
+		$this->ci_instance = $obj;
+	}
+	
+	// --------------------------------------------------------------------
+	
+	function ci_instance_var($name, $obj = FALSE)
+	{
+		if ( ! is_object($obj))
+		{
+			return $this->ci_instance->$name;
+		}
+		
+		$this->ci_instance->$name =& $obj;
+	}
+	
+	// --------------------------------------------------------------------
+
+	/**
+	 * Grab a core class
+	 *
+	 * Loads the correct core class without extensions
+	 * and returns a reference to the class name in the
+	 * globals array with the correct key. This way the
+	 * test can modify the variable it assigns to and
+	 * still maintain the global.
+	 */
+	function &ci_core_class($name)
+	{
+		$name = strtolower($name);
+		
+		if (isset($this->global_map[$name]))
+		{
+			$class_name = ucfirst($name);
+			$global_name = $this->global_map[$name];
+		}
+		elseif (in_array($name, $this->global_map))
+		{
+			$class_name = ucfirst(array_search($name, $this->global_map));
+			$global_name = $name;
+		}
+		else
+		{
+			throw new Exception('Not a valid core class.');
+		}
+		
+		if ( ! class_exists('CI_'.$class_name))
+		{
+			require_once BASEPATH.'core/'.$class_name.'.php';
+		}
+		
+		$GLOBALS[strtoupper($global_name)] = 'CI_'.$class_name;
+		return $GLOBALS[strtoupper($global_name)];
+	}
+	
+	// --------------------------------------------------------------------
+	
+	// convenience function for global mocks
+	function ci_set_core_class($name, $obj)
+	{
+		$orig =& $this->ci_core_class($name);
+		$orig = $obj;
+	}
+	
+	// --------------------------------------------------------------------
+	// Internals
+	// --------------------------------------------------------------------
+	
+	/**
+	 * Overwrite runBare
+	 *
+	 * PHPUnit instantiates the test classes before
+	 * running them individually. So right before a test
+	 * runs we set our instance. Normally this step would
+	 * happen in setUp, but someone is bound to forget to
+	 * call the parent method and debugging this is no fun.
+	 */
+	public function runBare()
+	{
+		self::$ci_test_instance = $this;
+		parent::runBare();
+	}
+	
+	// --------------------------------------------------------------------
+	
+	public static function instance()
+	{
+		return self::$ci_test_instance;
+	}
+	
+	// --------------------------------------------------------------------
+	
+	function ci_get_config()
+	{
+		return $this->ci_config;
+	}
+}
+
+// EOF
\ No newline at end of file
diff --git a/tests/lib/common.php b/tests/lib/common.php
new file mode 100644
index 0000000..6d29eb0
--- /dev/null
+++ b/tests/lib/common.php
@@ -0,0 +1,132 @@
+<?php
+
+// Set up the global CI functions in their most minimal core representation
+
+function &get_instance() 
+{
+	$test = CI_TestCase::instance();
+	$instance = $test->ci_instance();
+	return $instance;
+}
+
+// --------------------------------------------------------------------
+
+function &get_config() {
+	$test = CI_TestCase::instance();
+	$config = $test->ci_get_config();
+		
+	return $config;
+}
+
+function config_item($item)
+{
+	$config =& get_config();
+	
+	if ( ! isset($config[$item]))
+	{
+		return FALSE;
+	}
+	
+	return $config[$item];
+}
+
+// --------------------------------------------------------------------
+
+function load_class($class, $directory = 'libraries', $prefix = 'CI_')
+{
+	if ($directory != 'core' OR $prefix != 'CI_')
+	{
+		throw new Exception('Not Implemented: Non-core load_class()');
+	}
+	
+	$test = CI_TestCase::instance();
+	
+	$obj =& $test->ci_core_class($class);
+	
+	if (is_string($obj))
+	{
+		throw new Exception('Bad Isolation: Use ci_set_core_class to set '.$class.'');
+	}
+	
+	return $obj;
+}
+
+// This is sort of meh. Should probably be mocked up with
+// controllable output, so that we can test some of our
+// security code. The function itself will be tested in the
+// bootstrap testsuite.
+// --------------------------------------------------------------------
+
+function remove_invisible_characters($str, $url_encoded = TRUE)
+{
+	$non_displayables = array();
+	
+	// every control character except newline (dec 10)
+	// carriage return (dec 13), and horizontal tab (dec 09)
+	
+	if ($url_encoded)
+	{
+		$non_displayables[] = '/%0[0-8bcef]/';	// url encoded 00-08, 11, 12, 14, 15
+		$non_displayables[] = '/%1[0-9a-f]/';	// url encoded 16-31
+	}
+	
+	$non_displayables[] = '/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]+/S';	// 00-08, 11, 12, 14-31, 127
+
+	do
+	{
+		$str = preg_replace($non_displayables, '', $str, -1, $count);
+	}
+	while ($count);
+
+	return $str;
+}
+
+
+// Clean up error messages
+// --------------------------------------------------------------------
+
+function show_error($message, $status_code = 500, $heading = 'An Error Was Encountered')
+{
+	throw new Exception('CI Error: '.$message);
+}
+
+function show_404($page = '', $log_error = TRUE)
+{
+	throw new Exception('CI Error: 404');
+}
+
+function _exception_handler($severity, $message, $filepath, $line)
+{
+	throw new Exception('CI Exception: '.$message.' | '.$filepath.' | '.$line);
+}
+
+
+// We assume a few things about our environment ...
+// --------------------------------------------------------------------
+
+function is_php($version = '5.0.0')
+{
+	return ! (version_compare(PHP_VERSION, $version) < 0);
+}
+
+function is_really_writable($file)
+{
+	return is_writable($file);
+}
+
+function is_loaded()
+{
+	throw new Exception('Bad Isolation: mock up environment');
+}
+
+function log_message($level = 'error', $message, $php_error = FALSE)
+{
+	return TRUE;
+}
+
+function set_status_header($code = 200, $text = '')
+{
+	return TRUE;
+}
+
+// EOF
\ No newline at end of file
diff --git a/tests/phpunit.xml b/tests/phpunit.xml
new file mode 100644
index 0000000..9e5e10d
--- /dev/null
+++ b/tests/phpunit.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit 
+	bootstrap="Bootstrap.php"
+	colors="true">
+	<testsuites>
+		<testsuite name="CodeIgniter Core Test Suite">
+			<file>codeigniter/Setup_test.php</file>
+			<directory suffix="test.php">codeigniter/core</directory>
+			
+			<!-- We'll worry about these later ...
+			<directory suffix="test.php">codeigniter/libraries</directory>
+			<directory suffix="test.php">codeigniter/helpers</directory>
+			-->
+		</testsuite>
+	</testsuites>
+</phpunit>
\ No newline at end of file
diff --git a/tests/readme.txt b/tests/readme.txt
new file mode 100644
index 0000000..b1e9b73
--- /dev/null
+++ b/tests/readme.txt
@@ -0,0 +1,137 @@
+# Do not merge to default until this is blank #
+
+- Clean up naming conventions
+- Figure out config stuff
+- Figure out database testing
+
+
+
+# -------------- CodeIgniter Testing (4/20/2011) -------------- #
+
+
+# Introduction:
+
+This is the preliminary CodeIgniter testing documentation. It
+will cover both internal as well as external APIs and the reasoning
+behind their implemenation, where appropriate. As with all CodeIgniter
+documentation, this file should maintain a mostly human readable
+format to facilitate clean api design. [see http://arrenbrecht.ch/testing/]
+
+*FIRST PUBLIC DRAFT: EVERYTHING IS SUBJECT TO CHANGE*
+
+# Requirements
+
+1. PHP Unit
+    - pear channel-discover pear.phpunit.de
+    - pear install phpunit/PHPUnit
+
+2. vfsStream
+    - pear channel-discover pear.php-tools.net
+    - pear install pat/vfsStream-alpha
+
+
+# Test Suites:
+
+CodeIgniter bootstraps a request very directly, with very flat class
+hierarchy. As a result, there is no main CodeIgniter class until the
+controller is instantiated.
+
+This has forced the core classes to be relatively decoupled, which is
+a good thing. However, it makes that portion of code relatively hard
+to test.
+
+Right now that means we'll probably have two core test suites, along
+with a base for application and package tests. That gives us:
+
+1. Bootstrap Test	- test common.php and sanity check codeigniter.php		[in planning]
+2. System Test		- test core components in relative isolation			[in development]
+3. Application Test	- bootstrapping for application/tests					[not started]
+4. Package Test		- bootstrapping for <package>/tests						[not started]
+
+
+## 1. Bootstrap Test
+
+Testing common.php should be pretty simple. Include the file, and test the
+functions. May require some tweaking so that we can grab the statics from all
+methods (see is_loaded()). Testing the actual CodeIgniter.php file will most
+likely be an output test for the default view, with some object checking after
+the file runs. Needs consideration.
+
+
+## 2. System Test
+
+Testing the core system relies on being able to isolate the core components
+as much as possible. A few of them access other core classes as globals. These
+should be mocked up and easy to manipulate.
+
+All functions in common.php should be a minimal implementation, or and mapped
+to a method in the test's parent class to gives us full control of their output.
+
+
+### CI_TestCase Documentation
+
+
+Test cases should extend CI_TestCase. This internally extends
+PHPUnit_Framework_TestCase, so you have access to all of your
+usual PHPUnit methods.
+
+We need to provide a simple way to modify the globals and the
+common function output. We also need to be able to mock up
+the super object as we please.
+
+Current API is *not stable*. Names and implementations will change.
+
+$this->ci_set_config($key, $val)
+	Set the global config variables. If key is an array, it will
+	replace the entire config array. They are _not_ merged.
+
+$this->ci_instance($obj)
+	set the object to use as the "super object", in a lot
+	of cases this will be a simple stdClass with the attributes
+	you need it to have. If no parameter, will return the instance.
+
+$this->ci_instance_var($name, $val)
+	add an attribute to the super object. This is useful if you
+	set up a simple instance in setUp and then need to add different
+	class mockups to your super object.
+
+$this->ci_core_class($name)
+	Get the _class name_ of a core class, so that you can instantiate
+	it. The variable is returned by reference and is tied to the correct
+	$GLOBALS key. For example:
+	$cfg =& $this->ci_core_class('cfg'); // returns 'CI_Config'
+	$cfg = new $cfg;					// instantiates config and overwrites the CFG global
+
+$this->ci_set_core_class($name, $obj)
+	An alternative way to set one of the core globals.
+
+$this->ci_get_config()  __internal__
+	Returns the global config array. Internal as you shouldn't need to
+	call this (you're setting it, after all). Used internally to make
+	CI's get_config() work.
+
+CI_TestCase::instance()  __internal__
+	Returns an instance of the current test case. We force phpunit to
+	run with backup-globals enabled, so this will always be the instance
+	of the currently running test class.
+
+## 3. Application Test:
+
+Not sure yet, needs to handle:
+- Libraries
+- Helpers
+- Models
+- MY_* files
+- Controllers (uh...?)
+- Views? (watir, selenium, cucumber?)
+
+- Database Testing
+
+
+## 4. Package Test:
+
+I don't have a clue how this will work.
+
+Needs to be able to handle packages
+that are used multiple times within the application (i.e. EE/Pyro modules)
+as well as packages that are used by multiple applications (library distributions)
\ No newline at end of file