diff --git a/.travis.yml b/.travis.yml
index 29111bc..84029b9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,12 +4,20 @@
   - 5.3
   - 5.4
 
+env:
+  - DB=mysql
+  - DB=pgsql
+  - DB=sqlite
+
 before_script:
   - pyrus channel-discover pear.php-tools.net
   - pyrus install http://pear.php-tools.net/get/vfsStream-0.11.2.tgz
   - phpenv rehash
+  - sh -c "if [ '$DB' = 'pgsql' ]; then psql -c 'DROP DATABASE IF EXISTS ci_test;' -U postgres; fi"
+  - sh -c "if [ '$DB' = 'pgsql' ]; then psql -c 'create database ci_test;' -U postgres; fi"
+  - sh -c "if [ '$DB' = 'mysql' ]; then mysql -e 'create database IF NOT EXISTS ci_test;'; fi"
 
-script: phpunit --configuration tests/phpunit.xml 
+script: phpunit --configuration tests/travis/$DB.phpunit.xml
 
 branches:
   only:
diff --git a/system/database/DB.php b/system/database/DB.php
index 96e4955..0d81e40 100755
--- a/system/database/DB.php
+++ b/system/database/DB.php
@@ -92,16 +92,12 @@
 		if (isset($dsn['query']))
 		{
 			parse_str($dsn['query'], $extra);
+
 			foreach ($extra as $key => $val)
 			{
-				// booleans please
-				if (strtoupper($val) === 'TRUE')
+				if (is_string($val) && in_array(strtoupper($val), array('TRUE', 'FALSE', 'NULL')))
 				{
-					$val = TRUE;
-				}
-				elseif (strtoupper($val) === 'FALSE')
-				{
-					$val = FALSE;
+					$val = var_export($val);
 				}
 
 				$params[$key] = $val;
@@ -138,7 +134,12 @@
 		class CI_DB extends CI_DB_driver { }
 	}
 
-	require_once(BASEPATH.'database/drivers/'.$params['dbdriver'].'/'.$params['dbdriver'].'_driver.php');
+	// Load the DB driver
+	$driver_file = BASEPATH.'database/drivers/'.$params['dbdriver'].'/'.$params['dbdriver'].'_driver.php';
+
+	if ( ! file_exists($driver_file)) show_error('Invalid DB driver');
+
+	require_once($driver_file);
 
 	// Instantiate the DB adapter
 	$driver = 'CI_DB_'.$params['dbdriver'].'_driver';
diff --git a/tests/codeigniter/database/DB_test.php b/tests/codeigniter/database/DB_test.php
new file mode 100644
index 0000000..9b93e22
--- /dev/null
+++ b/tests/codeigniter/database/DB_test.php
@@ -0,0 +1,49 @@
+<?php
+
+class DB_test extends CI_TestCase {
+
+	// ------------------------------------------------------------------------
+
+	public function test_db_invalid()
+	{
+		$connection = new Mock_Database_DB(array(
+			'undefined' => array(
+				'dsn' => '',
+				'hostname' => 'undefined',
+				'username' => 'undefined',
+				'password' => 'undefined',
+				'database' => 'undefined',
+				'dbdriver' => 'undefined',
+			),
+		));
+
+		$this->setExpectedException('InvalidArgumentException', 'CI Error: Invalid DB driver');
+
+		Mock_Database_DB::DB($connection->set_dsn('undefined'), TRUE);
+	}
+
+	// ------------------------------------------------------------------------
+
+	public function test_db_valid()
+	{
+		$config = Mock_Database_DB::config(DB_DRIVER);
+		$connection = new Mock_Database_DB($config);
+		$db = Mock_Database_DB::DB($connection->set_dsn(DB_DRIVER), TRUE);
+
+		$this->assertTrue($db instanceof CI_DB);
+		$this->assertTrue($db instanceof CI_DB_Driver);
+	}
+
+	// ------------------------------------------------------------------------
+
+	public function test_db_failover()
+	{
+		$config = Mock_Database_DB::config(DB_DRIVER);
+		$connection = new Mock_Database_DB($config);
+		$db = Mock_Database_DB::DB($connection->set_dsn(DB_DRIVER.'_failover'), TRUE);
+
+		$this->assertTrue($db instanceof CI_DB);
+		$this->assertTrue($db instanceof CI_DB_Driver);
+	}
+	
+}
\ No newline at end of file
diff --git a/tests/codeigniter/database/.gitkeep b/tests/codeigniter/database/query_builder/.gitkeep
similarity index 100%
rename from tests/codeigniter/database/.gitkeep
rename to tests/codeigniter/database/query_builder/.gitkeep
diff --git a/tests/mocks/database/ci_test.sqlite b/tests/mocks/database/ci_test.sqlite
new file mode 100755
index 0000000..37ce4f8
--- /dev/null
+++ b/tests/mocks/database/ci_test.sqlite
Binary files differ
diff --git a/tests/mocks/database/config/mysql.php b/tests/mocks/database/config/mysql.php
new file mode 100644
index 0000000..ace0a31
--- /dev/null
+++ b/tests/mocks/database/config/mysql.php
@@ -0,0 +1,34 @@
+<?php
+
+return array(
+	
+	// Typical Database configuration
+	'mysql' => array(
+		'dsn' => '',
+		'hostname' => 'localhost',
+		'username' => 'travis',
+		'password' => '',
+		'database' => 'ci_test',
+		'dbdriver' => 'mysql',
+	),
+
+	// Database configuration with failover
+	'mysql_failover' => array(
+		'dsn' => '',
+		'hostname' => 'localhost',
+		'username' => 'not_travis',
+		'password' => 'wrong password',
+		'database' => 'not_ci_test',
+		'dbdriver' => 'mysql',
+		'failover' => array(
+			array(
+				'dsn' => '',
+				'hostname' => 'localhost',
+				'username' => 'travis',
+				'password' => '',
+				'database' => 'ci_test',
+				'dbdriver' => 'mysql',
+			),
+		),
+	),
+);
\ No newline at end of file
diff --git a/tests/mocks/database/config/pgsql.php b/tests/mocks/database/config/pgsql.php
new file mode 100644
index 0000000..c06af8c
--- /dev/null
+++ b/tests/mocks/database/config/pgsql.php
@@ -0,0 +1,34 @@
+<?php
+
+return array(
+	
+	// Typical Database configuration
+	'pgsql' => array(
+		'dsn' => '',
+		'hostname' => 'localhost',
+		'username' => 'postgres',
+		'password' => '',
+		'database' => 'ci_test',
+		'dbdriver' => 'postgre',
+	),
+
+	// Database configuration with failover
+	'pgsql_failover' => array(
+		'dsn' => '',
+		'hostname' => 'localhost',
+		'username' => 'not_travis',
+		'password' => 'wrong password',
+		'database' => 'not_ci_test',
+		'dbdriver' => 'postgre',
+		'failover' => array(
+			array(
+				'dsn' => '',
+				'hostname' => 'localhost',
+				'username' => 'postgres',
+				'password' => '',
+				'database' => 'ci_test',
+				'dbdriver' => 'postgre',
+			),
+		),
+	),
+);
\ No newline at end of file
diff --git a/tests/mocks/database/config/sqlite.php b/tests/mocks/database/config/sqlite.php
new file mode 100644
index 0000000..cf428f4
--- /dev/null
+++ b/tests/mocks/database/config/sqlite.php
@@ -0,0 +1,34 @@
+<?php
+
+return array(
+	
+	// Typical Database configuration
+	'sqlite' => array(
+		'dsn' => '',
+		'hostname' => 'localhost',
+		'username' => 'sqlite',
+		'password' => 'sqlite',
+		'database' => realpath(__DIR__.'/..').'/ci_test.sqlite',
+		'dbdriver' => 'sqlite',
+	),
+
+	// Database configuration with failover
+	'sqlite_failover' => array(
+		'dsn' => '',
+		'hostname' => 'localhost',
+		'username' => 'sqlite',
+		'password' => 'sqlite',
+		'database' => '../not_exists.sqlite',
+		'dbdriver' => 'sqlite',
+		'failover' => array(
+			array(
+				'dsn' => '',
+				'hostname' => 'localhost',
+				'username' => 'sqlite',
+				'password' => 'sqlite',
+				'database' => realpath(__DIR__.'/..').'/ci_testf.sqlite',
+				'dbdriver' => 'sqlite',
+			),
+		),
+	),
+);
\ No newline at end of file
diff --git a/tests/mocks/database/db.php b/tests/mocks/database/db.php
new file mode 100644
index 0000000..43a0d39
--- /dev/null
+++ b/tests/mocks/database/db.php
@@ -0,0 +1,101 @@
+<?php
+
+class Mock_Database_DB {
+
+	/**
+	 * @var array DB configuration
+	 */
+	private $config = array();
+	
+	/**
+	 * Prepare database configuration skeleton
+	 *
+	 * @param  array 	DB configuration to set
+	 * @return void
+	 */
+	public function __construct($config = array())
+	{
+		$this->config = $config;
+	}
+
+	/**
+	 * Build DSN connection string for DB driver instantiate process
+	 *
+	 * @param 	string 	Group name 		
+	 * @return 	string 	DSN Connection string
+	 */
+	public function set_dsn($group = 'default')
+	{
+		if ( ! isset($this->config[$group]))
+		{
+			throw new InvalidArgumentException('Group '.$group.' not exists');
+		}
+
+		$params = array(
+			'dbprefix' => '',
+			'pconnect' => FALSE,
+			'db_debug' => FALSE,
+			'cache_on' => FALSE,
+			'cachedir' => '',
+			'char_set' => 'utf8',
+			'dbcollat' => 'utf8_general_ci',
+			'swap_pre' => '',
+			'autoinit' => TRUE,
+			'stricton' => FALSE,
+		);
+
+		$config = array_merge($this->config[$group], $params);
+
+		if ( ! empty($config['dsn']))
+		{
+			$dsn = $config['dsn'];
+		}
+		else
+		{
+			$dsn = $config['dbdriver'].'://'.$config['username'].':'.$config['password']
+			       .'@'.$config['hostname'].'/'.$config['database'];
+
+		}
+
+		$other_params = array_slice($config, 6);
+
+		return $dsn.'?'.http_build_query($other_params);
+	}
+
+	/**
+	 * Return a database config array
+	 *
+	 * @see 	./config
+	 * @param 	string 		Driver based configuration
+	 * @return 	array 		
+	 */
+	public static function config($driver)
+	{
+		$dir = realpath(dirname(__FILE__)).DIRECTORY_SEPARATOR;
+
+		return include($dir.'config'.DIRECTORY_SEPARATOR.$driver.'.php');
+	}
+
+	/**
+	 * Main DB method wrapper
+	 *
+	 * @param 	string 		Group or DSN string
+	 * @param 	bool 		
+	 * @return 	object 		
+	 */
+	public static function DB($group, $query_builder = FALSE)
+	{
+		include_once(BASEPATH.'database/DB.php');
+
+		try 
+		{
+			$db = DB($group, $query_builder);
+		}
+		catch (Exception $e)
+		{
+			throw new InvalidArgumentException($e->getMessage());
+		}
+
+		return $db;
+	}
+}
\ No newline at end of file
diff --git a/tests/mocks/database/.gitkeep b/tests/mocks/database/schema/.gitkeep
similarity index 100%
rename from tests/mocks/database/.gitkeep
rename to tests/mocks/database/schema/.gitkeep
diff --git a/tests/phpunit.xml b/tests/phpunit.xml
deleted file mode 100644
index dfeecd1..0000000
--- a/tests/phpunit.xml
+++ /dev/null
@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<phpunit 
-	bootstrap="Bootstrap.php"
-	colors="true"
-	convertNoticesToExceptions="true"
-	convertWarningsToExceptions="true"
-	stopOnError="false"
-	stopOnFailure="false"
-	stopOnIncomplete="false"
-	stopOnSkipped="false">
-	<testsuites>
-		<testsuite name="CodeIgniter Core Test Suite">
-			<file>./codeigniter/Setup_test.php</file>
-			<directory suffix="test.php">codeigniter/core</directory>
-			<directory suffix="test.php">codeigniter/helpers</directory>
-			<directory suffix="test.php">codeigniter/libraries</directory>
-			<!-- We'll worry about these later ...
-			<directory suffix="test.php">codeigniter/libraries</directory>
-			<directory suffix="test.php">codeigniter/helpers</directory>
-			-->
-		</testsuite>
-	</testsuites>
-	<filters>
-		<blacklist>
-			<directory suffix=".php">PEAR_INSTALL_DIR</directory>
-			<directory suffix=".php">PHP_LIBDIR</directory>
-			<directory suffix=".php">PROJECT_BASE.'tests'</directory>
-			<directory suffix=".php">'../system/core/CodeIgniter.php'</directory>
-		</blacklist>
-		<whitelist>
-			<!--
-			<directory suffix=".php">'../system/core'</directory>
-			-->
-		</whitelist>
-	</filters>
-</phpunit>
\ No newline at end of file
diff --git a/tests/travis/mysql.phpunit.xml b/tests/travis/mysql.phpunit.xml
new file mode 100644
index 0000000..44d6d6e
--- /dev/null
+++ b/tests/travis/mysql.phpunit.xml
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit 
+	bootstrap="../Bootstrap.php"
+	colors="true"
+	convertNoticesToExceptions="true"
+	convertWarningsToExceptions="true"
+	stopOnError="false"
+	stopOnFailure="false"
+	stopOnIncomplete="false"
+	stopOnSkipped="false">
+	<php>
+        <const name="DB_DRIVER" value="mysql"/>
+    </php>
+	<testsuites>
+		<testsuite name="CodeIgniter Core Test Suite">
+			<file>../codeigniter/Setup_test.php</file>
+			<directory suffix="test.php">../codeigniter/core</directory>
+			<directory suffix="test.php">../codeigniter/helpers</directory>
+			<directory suffix="test.php">../codeigniter/libraries</directory>
+			<directory suffix="test.php">../codeigniter/database</directory>
+		</testsuite>
+	</testsuites>
+	<filters>
+		<blacklist>
+			<directory suffix=".php">PEAR_INSTALL_DIR</directory>
+			<directory suffix=".php">PHP_LIBDIR</directory>
+			<directory suffix=".php">PROJECT_BASE.'tests'</directory>
+			<directory suffix=".php">'../../system/core/CodeIgniter.php'</directory>
+		</blacklist>
+		<whitelist>
+			<!--
+			<directory suffix=".php">'../system/core'</directory>
+			-->
+		</whitelist>
+	</filters>
+</phpunit>
\ No newline at end of file
diff --git a/tests/travis/pgsql.phpunit.xml b/tests/travis/pgsql.phpunit.xml
new file mode 100644
index 0000000..9f52b40
--- /dev/null
+++ b/tests/travis/pgsql.phpunit.xml
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit 
+	bootstrap="../Bootstrap.php"
+	colors="true"
+	convertNoticesToExceptions="true"
+	convertWarningsToExceptions="true"
+	stopOnError="false"
+	stopOnFailure="false"
+	stopOnIncomplete="false"
+	stopOnSkipped="false">
+	<php>
+        <const name="DB_DRIVER" value="pgsql"/>
+    </php>
+	<testsuites>
+		<testsuite name="CodeIgniter Core Test Suite">
+			<file>../codeigniter/Setup_test.php</file>
+			<directory suffix="test.php">../codeigniter/core</directory>
+			<directory suffix="test.php">../codeigniter/helpers</directory>
+			<directory suffix="test.php">../codeigniter/libraries</directory>
+			<directory suffix="test.php">../codeigniter/database</directory>
+		</testsuite>
+	</testsuites>
+	<filters>
+		<blacklist>
+			<directory suffix=".php">PEAR_INSTALL_DIR</directory>
+			<directory suffix=".php">PHP_LIBDIR</directory>
+			<directory suffix=".php">PROJECT_BASE.'tests'</directory>
+			<directory suffix=".php">'../../system/core/CodeIgniter.php'</directory>
+		</blacklist>
+		<whitelist>
+			<!--
+			<directory suffix=".php">'../system/core'</directory>
+			-->
+		</whitelist>
+	</filters>
+</phpunit>
\ No newline at end of file
diff --git a/tests/travis/sqlite.phpunit.xml b/tests/travis/sqlite.phpunit.xml
new file mode 100644
index 0000000..74ebb48
--- /dev/null
+++ b/tests/travis/sqlite.phpunit.xml
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit 
+	bootstrap="../Bootstrap.php"
+	colors="true"
+	convertNoticesToExceptions="true"
+	convertWarningsToExceptions="true"
+	stopOnError="false"
+	stopOnFailure="false"
+	stopOnIncomplete="false"
+	stopOnSkipped="false">
+	<php>
+        <const name="DB_DRIVER" value="sqlite"/>
+    </php>
+	<testsuites>
+		<testsuite name="CodeIgniter Core Test Suite">
+			<file>../codeigniter/Setup_test.php</file>
+			<directory suffix="test.php">../codeigniter/core</directory>
+			<directory suffix="test.php">../codeigniter/helpers</directory>
+			<directory suffix="test.php">../codeigniter/libraries</directory>
+			<directory suffix="test.php">../codeigniter/database</directory>
+		</testsuite>
+	</testsuites>
+	<filters>
+		<blacklist>
+			<directory suffix=".php">PEAR_INSTALL_DIR</directory>
+			<directory suffix=".php">PHP_LIBDIR</directory>
+			<directory suffix=".php">PROJECT_BASE.'tests'</directory>
+			<directory suffix=".php">'../../system/core/CodeIgniter.php'</directory>
+		</blacklist>
+		<whitelist>
+			<!--
+			<directory suffix=".php">'../system/core'</directory>
+			-->
+		</whitelist>
+	</filters>
+</phpunit>
\ No newline at end of file