Patch of pached CIUnit(https://bitbucket.org/kenjis/my-ciunit).

gistfile1.diff

diff -ur ../../temp/kenjis-my-ciunit-27a0665997a8/application/third_party/CIUnit/config/config.php src/application/third_party/CIUnit/config/config.php
--- ../../temp/kenjis-my-ciunit-27a0665997a8/application/third_party/CIUnit/config/config.php 2012-01-18 01:27:00.000000000 +0900
+++ src/application/third_party/CIUnit/config/config.php	2013-04-03 17:56:13.738279800 +0900
@@ -8,6 +8,8 @@
 */
 
 $config['ciu_subclass_prefix'] = 'CIU_';
+$config['log_threshold'] = 4;
+$config['log_path'] = 'logs/';
 
 /* End of file config.php */
 /* Location ./application/third_party/CIUnit/config/config.php */
diff -ur ../../temp/kenjis-my-ciunit-27a0665997a8/application/third_party/CIUnit/core/CIU_Loader.php src/application/third_party/CIUnit/core/CIU_Loader.php
--- ../../temp/kenjis-my-ciunit-27a0665997a8/application/third_party/CIUnit/core/CIU_Loader.php	2012-01-18 01:27:00.000000000 +0900
+++ src/application/third_party/CIUnit/core/CIU_Loader.php	2013-03-21 09:42:32.017522800 +0900
@@ -431,6 +431,15 @@
 		$this->_ci_models = array();
 		$this->_ci_helpers = array();
 	}
+	
+	public function library($library = '', $params = NULL, $object_name = NULL)
+	{
+		$CI =& get_instance();
+		if (isset($CI->$library)) {
+			unset($CI->$library);
+		}
+		return parent::library($library, $params, $library); //force reload
+	}
 }
 
 /* End of file CIU_Loader.php */
diff -ur ../../temp/kenjis-my-ciunit-27a0665997a8/application/third_party/CIUnit/core/CIU_Output.php src/application/third_party/CIUnit/core/CIU_Output.php
--- ../../temp/kenjis-my-ciunit-27a0665997a8/application/third_party/CIUnit/core/CIU_Output.php	2012-01-18 01:27:00.000000000 +0900
+++ src/application/third_party/CIUnit/core/CIU_Output.php	2013-03-19 15:39:08.587308900 +0900
@@ -97,6 +97,14 @@
 	{
 		return $this->headers;
 	}
+	
+	/**
+	 * reset headers
+	 */
+	function reset_headers()
+	{
+		$this->headers = array();
+	}
 
 	/**
 	* say
diff -ur ../../temp/kenjis-my-ciunit-27a0665997a8/application/third_party/CIUnit/libraries/CIUnitTestCase.php src/application/third_party/CIUnit/libraries/CIUnitTestCase.php
--- ../../temp/kenjis-my-ciunit-27a0665997a8/application/third_party/CIUnit/libraries/CIUnitTestCase.php	2012-01-18 01:27:00.000000000 +0900
+++ src/application/third_party/CIUnit/libraries/CIUnitTestCase.php	2013-04-02 20:53:02.647772600 +0900
@@ -82,6 +82,10 @@
 		{
 			$this->dbfixt($this->tables);
 		}
+		
+		// Clear POST and GET
+		$_POST = array();
+		$_GET = array();
 	}
 	
 	/**
@@ -132,12 +136,23 @@
 		 */
 		foreach($table_fixtures as $table => $fixt )
 		{
+			if (is_array($fixt)) {
+				$dbgroup = $fixt[0];
+				$fixt = $fixt[1];
+			} else {
+				$dbgroup = null;
+			}
+			
 			$fixt_name = $fixt . '_fixt';
 			$table = is_int($table) ? $fixt : $table;
 			
 			if (!empty($this->$fixt_name))
 			{
-				CIUnit::$fixture->load($table, $this->$fixt_name);
+				if ($dbgroup) {
+					CIUnit::$fixture->load($table, $this->$fixt_name, $dbgroup);
+				} else {
+					CIUnit::$fixture->load($table, $this->$fixt_name);
+				}
 			}
 			else
 			{
@@ -146,7 +161,19 @@
 			
 		}
 		
-		log_message('debug', 'Table fixtures "' . join('", "', $table_fixtures) . '" loaded');
+		log_message('debug', 'Table fixtures "' . join('", "', $this->array_flatten($table_fixtures)) . '" loaded');
+	}
+	
+	function array_flatten($nested) {
+		$flat = array();
+		foreach($nested as $key => $x) {
+			if (is_array($x)) {
+				$flat[$key] = join('" : "', $x);
+			} else {
+				$flat[$key] = $x;
+			}
+		}
+		return $flat;
 	}
 	
 	/**
@@ -184,7 +211,13 @@
 		// Iterate over the array unloading the tables
 		foreach ($table_fixtures as $table => $fixture)
 		{
-			CIUnit::$fixture->unload($table);
+			if (is_array($fixture)) {
+				$dbgroup = $fixture[0];
+				$fixture = $fixture[1];
+				CIUnit::$fixture->unload($table, $dbgroup);
+			} else {
+				CIUnit::$fixture->unload($table);
+			}
 			log_message('debug', 'Table fixture "' . $fixture . '" unloaded');
 		}
 	}
@@ -205,6 +238,10 @@
 	{
 		foreach ( $fixts as $fixt )
 		{
+			if (is_array($fixt)) {
+				$fixt = $fixt[1];
+			}
+
 			$fixt_name = $fixt . '_fixt';
 			
 			if (file_exists(TESTSPATH . 'fixtures/' . $fixt . '_fixt.yml')) {
diff -ur ../../temp/kenjis-my-ciunit-27a0665997a8/application/third_party/CIUnit/libraries/Fixture.php src/application/third_party/CIUnit/libraries/Fixture.php
--- ../../temp/kenjis-my-ciunit-27a0665997a8/application/third_party/CIUnit/libraries/Fixture.php	2012-01-18 01:27:00.000000000 +0900
+++ src/application/third_party/CIUnit/libraries/Fixture.php	2013-04-02 15:27:03.503092100 +0900
@@ -25,13 +25,13 @@
 	/**
 	* loads fixture data $fixt into corresponding table
 	*/
-	function load($table, $fixt)
+	function load($table, $fixt, $dbgroup = 'default')
 	{
-		$this->_assign_db();
+		$this->_assign_db($dbgroup);
 		
 		// $fixt is supposed to be an associative array
 		// E.g. outputted by spyc from reading a YAML file
-		$this->CI->db->simple_query('truncate table ' . $table . ';');
+		$this->db->simple_query('truncate table ' . $table . ';');
 
 		foreach ( $fixt as $id => $row )
 		{
@@ -39,13 +39,17 @@
 			{
 				if ($val !== '')
 				{
-					$row["`$key`"] = $val;
+					if ($this->db->dbdriver == "postgre")
+					{
+						$row["\"$key\""] = $val;
+					} else {
+						$row["`$key`"] = $val;
+					}
 				}
 				//unset the rest
-				unset($row[$key]);
 			}
 
-			$this->CI->db->insert($table, $row);
+			$this->db->insert($table, $row);
 		}
 
 		$nbr_of_rows = sizeof($fixt);
@@ -53,33 +57,29 @@
 			"Data fixture for db table '$table' loaded - $nbr_of_rows rows");
 	}
 	
-	public function unload($table)
+	public function unload($table, $dbgroup = 'default')
 	{
-		$this->_assign_db();
+		$this->_assign_db($dbgroup);
 		
-		$Q = $this->CI->db->simple_query('truncate table ' . $table . ';');
+		$Q = $this->db->simple_query('truncate table ' . $table . ';');
 		
 		if (!$Q) {
-			echo $this->CI->db->call_function('error', $this->CI->db->conn_id);
+			echo $this->db->call_function('error', $this->db->conn_id);
 			echo "\n";
 			echo "Failed to truncate the table ".$table."\n\n";
 		}
 	}
 	
 
-	private function _assign_db()
+	private function _assign_db($dbgroup)
 	{
-		if ( ! isset($this->CI->db) OR
-			 ! isset($this->CI->db->database) )
-		{
-			$this->CI =& get_instance();
-			$this->CI->load->database();
-		}
+		$this->CI =& get_instance();
+		$this->db = $this->CI->load->database($dbgroup, true);
 
 		//security measure 2: only load if used database ends on '_test'
-		$len = strlen($this->CI->db->database);
+		$len = strlen($this->db->database);
 
-		if ( substr($this->CI->db->database, $len-5, $len) != '_test' )
+		if ( substr($this->db->database, $len-5, $len) != '_test' )
 		{
 			die("\nSorry, the name of your test database must end on '_test'.\n".
 				"This prevents deleting important data by accident.\n");

Features:

• Clear POST and GET at setUp for controller test.
• Multi database.

Multi database idiom:

    protected $tables = array(
        'srv' => 'srv',
        'admin' => 'admin',
        'person' => array('subdb', 'person'),
    );

Plain setting are using 'default' database.
Array setting are using $db['subdb'] of config/testing/database.php.