Fixed accept lang test to account for boolean results.
diff --git a/tests/codeigniter/libraries/User_agent_test.php b/tests/codeigniter/libraries/User_agent_test.php
index 277c12e..6f9e871 100644
--- a/tests/codeigniter/libraries/User_agent_test.php
+++ b/tests/codeigniter/libraries/User_agent_test.php
@@ -8,17 +8,17 @@
 {
 	protected $_user_agent = 'Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_7; en-us) AppleWebKit/533.20.25 (KHTML, like Gecko) Version/5.0.4 Safari/533.20.27';
 	protected $_mobile_ua = 'Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_1 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8B117 Safari/6531.22.7';
-	
+
 	public function set_up()
 	{
 		// set a baseline user agent
 		$_SERVER['HTTP_USER_AGENT'] = $this->_user_agent;
-		
+
 		$obj = new StdClass;
 		$obj->agent = new CI_User_agent();
-		
+
 		$this->ci_instance($obj);
-		
+
 		$this->agent = $obj->agent;
 	}
 
@@ -27,10 +27,10 @@
 	public function test_accept_lang()
 	{
 		$_SERVER['HTTP_ACCEPT_LANGUAGE'] = 'en';
-
-		$this->assertEquals('en', $this->agent->accept_lang());
-
+		$this->assertTrue($this->agent->accept_lang());
 		unset($_SERVER['HTTP_ACCEPT_LANGUAGE']);
+		$this->assertTrue($this->agent->accept_lang('en'));
+		$this->assertFalse($this->agent->accept_lang('fr'));
 	}
 
 	// --------------------------------------------------------------------
@@ -70,19 +70,19 @@
 		$this->assertEquals('', $this->agent->robot());
 		$this->assertEquals('', $this->agent->referrer());
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	public function test_charsets()
 	{
 		$_SERVER['HTTP_ACCEPT_CHARSET'] = 'utf8';
-		
+
 		$charsets = $this->agent->charsets();
-		
+
 		$this->assertEquals('utf8', $charsets[0]);
-		
+
 		unset($_SERVER['HTTP_ACCEPT_CHARSET']);
-		
+
 		$this->assertFalse($this->agent->accept_charset());
 	}