Rewrite calls to "assertTrue" - using dedicated assertions enables better error messages.
Remove all the database execution from confidentialString tests.
Fix some coding style.
Fix some coding style.
Move setUp and tearDown close together (easier to validate the setup is properly undone)
Add variable for the test object ($pdo) and rename to $database (it's no PDO object, the name is misleading).
Merge pull request #47 from SvenRtbg/testing-improved

Improve the tests