Steps to reproduce the issue

Run unit tests on Macbook.

Expected result

Tests have same issues as travis

Actual result

Additional issue

PHP Notice:  Undefined variable: hash in /Users/george/Sites/joomla-cms/libraries/src/Authentication/Password/SHA256Handler.php on line 91
PHP Notice:  Undefined variable: password in /Users/george/Sites/joomla-cms/libraries/src/Authentication/Password/SHA256Handler.php on line 93
F
Notice: Undefined variable: hash in /Users/george/Sites/joomla-cms/libraries/src/Authentication/Password/SHA256Handler.php on line 91

Notice: Undefined variable: password in /Users/george/Sites/joomla-cms/libraries/src/Authentication/Password/SHA256Handler.php on line 93
PHP Notice:  Undefined variable: hash in /Users/george/Sites/joomla-cms/libraries/src/Authentication/Password/SHA256Handler.php on line 91
PHP Notice:  Undefined variable: password in /Users/george/Sites/joomla-cms/libraries/src/Authentication/Password/SHA256Handler.php on line 93
.
Notice: Undefined variable: hash in /Users/george/Sites/joomla-cms/libraries/src/Authentication/Password/SHA256Handler.php on line 91

Notice: Undefined variable: password in /Users/george/Sites/joomla-cms/libraries/src/Authentication/Password/SHA256Handler.php on line 93
PHP Notice:  Undefined variable: hash in /Users/george/Sites/joomla-cms/libraries/src/Authentication/Password/SHA256Handler.php on line 91
PHP Notice:  Undefined variable: password in /Users/george/Sites/joomla-cms/libraries/src/Authentication/Password/SHA256Handler.php on line 93
.
Notice: Undefined variable: hash in /Users/george/Sites/joomla-cms/libraries/src/Authentication/Password/SHA256Handler.php on line 91

Notice: Undefined variable: password in /Users/george/Sites/joomla-cms/libraries/src/Authentication/Password/SHA256Handler.php on line 93
PHP Notice:  Undefined variable: hash in /Users/george/Sites/joomla-cms/libraries/src/Authentication/Password/SHA256Handler.php on line 91
PHP Notice:  Undefined variable: password in /Users/george/Sites/joomla-cms/libraries/src/Authentication/Password/SHA256Handler.php on line 93
.
Notice: Undefined variable: hash in /Users/george/Sites/joomla-cms/libraries/src/Authentication/Password/SHA256Handler.php on line 91

Notice: Undefined variable: password in /Users/george/Sites/joomla-cms/libraries/src/Authentication/Password/SHA256Handler.php on line 93

System information (as much as possible)

george@ ~/Sites/joomla-cms (4.0-dev) $ php --version
PHP 7.1.10 (cli) (built: Oct  6 2017 01:08:19) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.1.0, Copyright (c) 1998-2017 Zend Technologies

cc @mbabker probably one for you as you redid the auth stuff