function let(HashGenerator $hashGenerator)
{
$hashGenerator->generate(a::any(), a::any())->willReturn($this->hash);
$this->beConstructedWith($hashGenerator);
}
/**
* @param string $hashAlgorithm
* @return string
*/
protected function generateHash($hashAlgorithm)
{
$base = $this->getHashBase();
return $this->hashGenerator->generate($hashAlgorithm, $base);
}