/**
*
*/
public function testIsUpper()
{
$this->assertFalse(String::isUpper('word'));
$this->assertTrue(String::isUpper('WORD'));
$this->assertFalse(String::isUpper('Word'));
$this->assertFalse(String::isUpper('WoRd'));
$this->assertFalse(String::isUpper('WOrd'));
}
