Description
PHPUnit 8 has just been released. In addition to new features, the following has been deprecated and will be removed in PHPUnit 9:

• assertInternalType() and assertNotInternalType()
• assertArraySubset()
• Annotation(s) for expecting exceptions
• Assertions (and helper methods) that operate on (non-public) attributes
• Optional parameters of assertEquals() and assertNotEquals()
• TestListener interface
• Optional parameters of assertContains() and assertNotContains() as well as using these methods with string haystacks

Full details at https://phpunit.de/announcements/phpunit-8.html

Let's review our tests to make sure we don't use these. Thanks.