Calculator::sub PHP Méthode

    public function sub($a, $b)
    {
        return $a - $b;
    }

 /**
  * Generated from @assert (7,3) == 4.
  *
  * @covers Calculator::sub
  */
 public function testSub()
 {
     $this->assertEquals(4, $this->object->sub(7, 3));
 }