ZF-10763: add tests to class Zend_View_Helper_UserAgent

Description

I believe that should be added tests to class Zend_View_Helper_UserAgent. Despite of be simple but think of much importance. Example in the issue ZF-10759 with your resolution should be added tests to the same.

Comments

Closing as the subject and description do not provide information on what issue is being reported.

Update subject and description.

Fixed on trunk (25297) and on release-1.12 branch (25298)