std.experimental.testing formal review

[Atila Neves via Digitalmars-d]

On Sunday, 13 September 2015 at 09:59:18 UTC, Dicebot wrote:
> 1) being able to mark test case as fatal (i.e. if internal 
> handshake or sanity check fails there is no point in trying to 
> run other tests)

I'm leaning towards not including this now and concentrating on 
getting it
approved - a PR to change std.experimental.testing later will be 
much
easier to deal with than doing it now.

> 2) being able to do weak ordering of tests (by defining strict 
> sequence of groups so that parallelization/randomization only 
> happens within such group) - I have used something as simple as 
> numerical priority value so far for my needs

I did the check for random runs and renamed @singleThreaded to 
@serial in the PR.

Atila