Add casetitle function

tests/CommonTest.php

@@ -318,6 +318,17 @@ abstract class CommonTest extends PHPUnit_Framework_TestCase
         );
     }
 
+    public function toCaseTitleProvider()
+    {
+        return array(
+            array( 'Foo Bar', 'foo bar'),
+            array(' Foo_Bar ', ' foo_bar '),
+            array('Fòô Bàř', 'fòô bàř', 'UTF-8'),
+            array(' Fòô_Bàř ', ' fòô_bàř ', 'UTF-8'),
+            array('Αυτοκίνητο Αυτοκίνητο', 'αυτοκίνητο αυτοκίνητο', 'UTF-8'),
+        );
+    }
+
     public function toUpperCaseProvider()
     {
         return array(

tests/StaticStringyTest.php

@@ -244,6 +244,16 @@ class StaticStringyTestCase extends CommonTest
         $this->assertEquals($expected, $result);
     }
 
+    /**
+     * @dataProvider toCaseTitleProvider()
+     */
+    public function testToCaseTitle($expected, $str, $encoding = null)
+    {
+        $result = S::toCaseTitle($str, $encoding);
+        $this->assertInternalType('string', $result);
+        $this->assertEquals($expected, $result);
+    }
+
     /**
      * @dataProvider toUpperCaseProvider()
      */