Re: incorrect xlog.c coverage report

On 2018-Nov-21, Masahiko Sawada wrote:

> I've looked into this issue and this happens on my environment (CentOS
> 6.9 and gcob 4.4.7) as well. ISTM the cause would related to the
> immediate shutdown mode we're using in test_recovery_standby.
> Interestingly in my environment with the attached one-line patch the
> coverage reports the branches parsing the individual recovery options
> correctly.
>
> If my investigation is correct, all tests where use an immediate
> shutdown might not counted by gcov.

Confirmed these results here, thanks for the research.

I think we should change all calls of ->teardown_node to ->stop(),
except the one in the END block, and look for places which are currently
relying too much on END (i.e. add more ->stop() calls where needed).

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