>>>Did you try to initialize the buf array with some values for your tests?
>>>
>>>And also run the tests separately, not in one class?
>>
>>(1) Yes
>>(2) What difference would that make ?
>
>You're right - probably no difference - but just for the purity of the experiment (since in first case the array is created, may be it is somehow "re-used")?

No way

>
>Or try to switch the order of the tests just to exclude this potential (non-existent) problem.