[Haskell-cafe] The State of Testing?

[Michael Craig]

How do you control where the .mix files are generated? GHC is putting them
in .hpc/, but I'm getting errors like "hpc: can not find
test-0.0.0/Data.Test in ["./dist/hpc/mix/test-0.0.0"]".

Mike Craig



On Tue, Feb 7, 2012 at 5:12 PM, Ryan Newton <rrnewton at gmail.com> wrote:

> By the way, has anyone else had trouble with "cabal test" diverging?
>
> I've been running into this issue with cabal 0.10.2, but ONLY in
> conjunction with GHC 6.12.3.  It's hard to make a small reproducer for (and
> therefore I haven't filed a bug yet), but you can see the below Jenkins run
> stalled for 2.5 days, whereas it should take minutes:
>
>
> http://tester-lin.soic.indiana.edu:8080/job/monad-par_github_master/JENKINS_GHC=ghc-6.12.3/17/console
>
> Note that it *doesn't* burn CPU -- it deadlocks rather than spins.
>
> I replaced "cabal test" with a direct call to the test executable and I
> haven't seen this problem since.
>
>    -Ryan
>
>
>
> On Tue, Feb 7, 2012 at 4:23 PM, Austin Seipp <mad.one at gmail.com> wrote:
>
>> If you're writing a library, you need to compile the library with
>> `-fhpc`, i.e. put it in the library stanza, not the testsuite stanza,
>> and then you can compile the test program using your library - the
>> resulting 'tix' file will contain the library coverage reports. You
>> can link a HPC-built library into an executable not compiled with HPC
>> just fine.
>>
>> Normally I only compile the library under HPC mode, link it in a test,
>> and distribute the results from that. That way your coverage reports
>> don't include the test module (which may or may not be relevant.)
>>
>> I normally add a cabal flag called 'hpc' which optionally enables
>> coverage reports for my library, e.g.
>>
>> flag hpc
>>  default: False
>>
>> library
>>  ...
>>  ...
>>  if flag(hpc)
>>    ghc-options: -fhpc
>>
>> Then when you want coverage reports, just say 'cabal install -fhpc
>> --enable-tests' and the resulting properties executable will spit out
>> the results when run.
>>
>> On Tue, Feb 7, 2012 at 3:16 PM, Michael Craig <mkscrg at gmail.com> wrote:
>> > Thanks for the advice, all. I've got test-framework, quickcheck, and
>> cabal's
>> > test-suite all working together nicely.
>> >
>> > Cabal seems to support using hpc to check test coverage. If I add -fhpc
>> to
>> > the ghc-options under the test-suite, I get output like "Test coverage
>> > report written to dist/hpc/html/tests/hpc_index.html" and "Package
>> coverage
>> > report written to dist/hpc/html/test-0.0.0/hpc_index.html", but those
>> html
>> > files are just empty tables. How does this work?
>> >
>> > Mike Craig
>> >
>> >
>> >
>> >
>> > On Thu, Feb 2, 2012 at 8:45 PM, Ivan Lazar Miljenovic
>> > <ivan.miljenovic at gmail.com> wrote:
>> >>
>> >> On 03/02/2012 12:22 PM, "Johan Tibell" <johan.tibell at gmail.com> wrote:
>> >> >
>> >> > On Thu, Feb 2, 2012 at 4:46 PM, Conrad Parker <conrad at metadecks.org>
>> >> > wrote:
>> >> >>
>> >> >> On 3 February 2012 08:30, Johan Tibell <johan.tibell at gmail.com>
>> wrote:
>> >> >> > On Thu, Feb 2, 2012 at 4:19 PM, Conrad Parker <
>> conrad at metadecks.org>
>> >> >> > wrote:
>> >> >> >>
>> >> >> >> I've followed what Johan Tibbell did in the hashable package:
>> >> >> >
>> >> >> >
>> >> >> > If I had known how much confusion my childhood friends would
>> unleash
>> >> >> > on the
>> >> >> > Internet when they, at age 7, gave me a nickname that's spelled
>> >> >> > slightly
>> >> >> > differently from my last name, I would have asked them to pick
>> >> >> > another one.
>> >> >> > ;)
>> >> >>
>> >> >> lol, sorry, I actually double-checked the number of l's before
>> writing
>> >> >> that but didn't consider the b's. For future reference I've
>> produced a
>> >> >> handy chart:
>> >> >>
>> >> >>
>> >> >>
>> >> >> Letter | Real-name count | Nickname count
>> >> >> -------+-----------------+---------------
>> >> >> b      | 1               | 2
>> >> >> l      | 2               | 0
>> >> >> -------+-----------------+---------------
>> >> >> SUM    | 3               | 2
>> >> >>
>> >> >
>> >> > Excellent. I will tattoo it on my forehead.
>> >>
>> >> There is, of course, a simpler (but not necessarily easier :p)
>> solution:
>> >> change your name to match your nickname!
>> >>
>> >> >
>> >> >
>> >> > _______________________________________________
>> >> > Haskell-Cafe mailing list
>> >> > Haskell-Cafe at haskell.org
>> >> > http://www.haskell.org/mailman/listinfo/haskell-cafe
>> >> >
>> >>
>> >>
>> >> _______________________________________________
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>> >>
>> >
>> >
>> > _______________________________________________
>> > Haskell-Cafe mailing list
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>> >
>>
>>
>>
>> --
>> Regards,
>> Austin
>>
>> _______________________________________________
>> Haskell-Cafe mailing list
>> Haskell-Cafe at haskell.org
>> http://www.haskell.org/mailman/listinfo/haskell-cafe
>>
>
>
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