validatePassword() public method

Passwords hashed with a different cost can be validated by using the cost parameter of the hashed password and salt.
public validatePassword ( string $password, string $hashedPasswordAndSalt, string $staticSalt = null ) : boolean
$password string The cleartext password
$hashedPasswordAndSalt string The derived key and salt in as returned by crypt() for verification
$staticSalt string Optional static salt that will be appended to the dynamic salt
return boolean TRUE if the given password matches the hashed password
 /**
  * @test
  */
 public function validatePasswordWithInvalidHashFails()
 {
     $strategy = new BCryptHashingStrategy(10);
     $this->assertFalse($strategy->validatePassword('password', ''));
     $this->assertFalse($strategy->validatePassword('password', '$1$abc'));
     $this->assertFalse($strategy->validatePassword('password', '$2x$01$012345678901234567890123456789'));
 }