[cfe-dev] run integration tests for single file

[Alexander Droste]

Solved. There were two problems:

The integration test I added, was symlinked into the test folder.
llvm-lit seems to follow symlinks why it looked in the wrong place for
the config files. In contrast the symlinks are not followed if
"ninja clang-test" is called why I didn't consider this to be a
problem at first.

The second problem was that I didn't use the llvm-lit from
the debug repository I added the test to. I used the llvm-lit
from a seperate repo folder which contains the stable branch, release
executables I use as my system defaults which are front in the PATH.

--Alex


On 10.08.15 18:04, Alexander Droste wrote:
> Hi,
>
> thanks for your reply.
> I have positioned the test file in llvm/tools/clang/test/Analysis
> which includes a lot of other regression test files.
> For each other file I tried, the llvm-lit command works.
> A lit config file is contained in that folder.
> I think the question is how the lit configuration can be
> regenerated/configured to fix the issue.
>
> Best regards,
> Alex
>
> On 10.08.15 16:44, David Blaikie wrote:
>> On Mon, Aug 10, 2015 at 6:19 AM, Alexander Droste <
>> alexander.ra.droste at googlemail.com> wrote:
>>
>>> Hi everyone,
>>>
>>> I'm trying to run some integration tests, defined in a single
>>> file, for a static analysis check I wrote.
>>>
>>>
>>> https://github.com/0ax1/MPI-Checker/blob/master/tests/integration_tests/MPICheckerTest.c
>>>
>>>
>>> When I run the complete Clang test-suite (calling "ninja clang-test") for
>>> integration tests, the tests I defined get executed and work as expected
>>> but
>>> calling "llvm-lit MPICheckerTest.c" yields:
>>>
>>> "llvm-lit: discovery.py:113: warning: unable to find test suite for
>>> 'MPICheckerTest.c' llvm-lit: discovery.py:224: warning: input
>>> 'MPICheckerTest.c'
>>> contained no tests.."
>>>
>>> In the docs (http://llvm.org/docs/TestingGuide.html) it is stated that in
>>> order
>>> to add a test, configure/make should be called.
>>> But in the llvm/test folder I do not have a configure script (I used ninja
>>> to
>>> build LLVM) and simply calling make does not work ("../Makefile.config: No
>>> such
>>> file ...").
>>>
>>> Can anybody help out?
>>>
>>
>> I'm not sure what ways work/are meant to work, but the way that works for
>> me is this:
>>
>>  From the build directory you run ninja in, run "./bin/llvm-lit -v
>> test/CodeGen/foo.ll" etc. (ie: the source relative path in LLVM)
>>
>> Oh, you're running tests that aren't part of Clang or LLVM's test suite?
>> That I'm less (not at all) familiar with, but you might need a lit config
>> file in the directory parent chain of the test file you're running (check
>> the ones in LLVM's suite for example)
>>
>> - Dave
>>
>>
>>>
>>> Best regards,
>>> Alex
>>>
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>>>
>>