Example #1
0
 public function testUpper()
 {
     $this->eq(s::upper('abc'), 'ABC');
     $this->eq(s::upper('ABC'), 'ABC');
     $this->eq(s::upper(''), '');
 }
Example #2
0
 public function upper()
 {
     return new self(s::upper($this->value));
 }