Ewout Pieter den Ouden

@willemstuursma thanks for this issue, it makes a good edge case for testing rebustness of test execution reordering. I've have added it as a test for my [Breakfast](https://github.com/epdenouden/phpunit/wiki/PHPUnit-rerun-defects-first) project: https://github.com/epdenouden/phpunit/blob/breakfast/tests/Runner/TestSuiteSorterEmptyTestCaseTest.php...

Hello @Bilge! Thank you for taking the time to ~detail what documentation is missing~ give me a long overdue spanking. No Nikolaus presents for me this year! I will document...

@stemis Quick check: you are running the tests in a seperate process, is that correct? In order to pass the provided data from the orchestrating PHPUnit process to the isolated...

@stemis Thanks for the additional information. Passing data around using serialization should only be used for external processes including PHPT files. ~With the upcoming `@dataProvider` refactoring I'd like to know...

@mfn I am working on writing a more detailed review. Long story very short: the idea of filtering tests via an XML-file and the main Iterator is fine, but it...

@remicollet thanks for looking into this, I will have a good look. I'm in favour of cleaner solutions for the cache file management.

I had not seen this issue previously. Linking it to the `@dataProvider` refactoring #3736

Returning does nobody any good when I'm still `void`

I will investigate this, as I have to read up on v10 and the dependency checker is largely cooked up by me.

Should also work for the new attributes, I am assuming? Couldn't find it in the manual whether `!=` is supported or not. If it should be supported but currently isn't,...