[lldb-dev] New test summary results formatter

Todd Fiala via lldb-dev lldb-dev at lists.llvm.org
Wed Dec 2 13:42:40 PST 2015 

Can you try making those changes in the other spots?  There's a handful of
code you have probably not ever run if you haven't selected running with a
test results formatter.

If not, I can try to address them tonight or tomorrow night when I can get
to some kind of python 3 setup.

On Wed, Dec 2, 2015 at 1:36 PM, Zachary Turner <zturner at google.com> wrote:

> Yea I was messing around with it too.  I don't have a fix yet but I think
> you will need to either encode the pickled data as utf8, or better yet,
> don't write this:
>
> "{}#{}".format(...)
>
> because pickled data is supposed to be binary data anyway.  So use
> bytes.append() instead.
>
> Then on the other side in dotest_channels, there's a couple places where
> you do something like:
>
> self.ibuffer = ""
>
> which would need to change to
>
> self.ibuffer = b""
>
> and any other similar operations on self.ibuffer which assume string data.
>
> On Wed, Dec 2, 2015 at 1:33 PM Todd Fiala <todd.fiala at gmail.com> wrote:
>
>> I think I know how to fix.  Trying now.
>>
>> On Wed, Dec 2, 2015 at 1:17 PM, Todd Fiala <todd.fiala at gmail.com> wrote:
>>
>>> I think I can fix the issue without you debugging.
>>>
>>> Getting the single pass test runner to use it isn't impossible but will
>>> take some work.  Can you direct-send me the backtrace from the point of
>>> failure from your system?  Thanks!
>>>
>>> -Todd
>>>
>>> On Wed, Dec 2, 2015 at 12:34 PM, Zachary Turner <zturner at google.com>
>>> wrote:
>>>
>>>> Is there any way to force the single process test runner to use this
>>>> same system?  I'm trying to debug the problem, but this codepath doesn't
>>>> execute in the single process test runner, and it executes in the child
>>>> process in the multiprocess test runner.  Basically I need the following
>>>> callstack to execute in the single process test runner:
>>>>
>>>> Command invoked: C:\Python35\python_d.exe
>>>> D:\src\llvm\tools\lldb\test\dotest.py -q --arch=i686 --executable
>>>> D:/src/llvmbuild/ninja_py35/bin/lldb.exe -s
>>>> D:/src/llvmbuild/ninja_py35/lldb-test-traces -u CXXFLAGS -u CFLAGS
>>>> --enable-crash-dialog -C d:\src\llvmbuild\ninja_release\bin\clang.exe
>>>> --results-port 60794 --inferior -p TestIntegerTypesExpr.py
>>>> D:\src\llvm\tools\lldb\packages\Python\lldbsuite\test --event-add-entries
>>>> worker_index=7:int
>>>> 411 out of 412 test suites processed - TestIntegerTypesExpr.py
>>>> Traceback (most recent call last):
>>>>   File "D:\src\llvm\tools\lldb\test\dotest.py", line 7, in <module>
>>>>     lldbsuite.test.run_suite()
>>>>   File
>>>> "D:\src\llvm\tools\lldb\packages\Python\lldbsuite\test\dotest.py", line
>>>> 1476, in run_suite
>>>>     setupTestResults()
>>>>   File
>>>> "D:\src\llvm\tools\lldb\packages\Python\lldbsuite\test\dotest.py", line
>>>> 982, in setupTestResults
>>>>     results_formatter_object.handle_event(initialize_event)
>>>>   File
>>>> "D:\src\llvm\tools\lldb\packages\Python\lldbsuite\test\test_results.py",
>>>> line 1033, in handle_event
>>>>     "{}#{}".format(len(pickled_message), pickled_message))
>>>> TypeError: a bytes-like object is required, not 'str'
>>>>
>>>> On Wed, Dec 2, 2015 at 11:40 AM Zachary Turner <zturner at google.com>
>>>> wrote:
>>>>
>>>>> When I run this under Python 3 I get "A bytes object is used like a
>>>>> string" on Line 1033 of test_results.py.  I'm going to dig into it a little
>>>>> bit, but maybe you know off the top of your head the right way to fix it.
>>>>>
>>>>> On Wed, Dec 2, 2015 at 11:32 AM Zachary Turner <zturner at google.com>
>>>>> wrote:
>>>>>
>>>>>> Oh yea, I made up that decorator idea because I didn't know all the
>>>>>> formatters were derived from a common base.  But your idea is better if
>>>>>> everything is derived from a common base.  To be honest you could even just
>>>>>> generate an error if there are two ResultsFormatter derived classes in the
>>>>>> same module.  We should be encouraging more smaller files with single
>>>>>> responsibility.  One of the things I plan to do as part of some cleanup in
>>>>>> a week or two is to split up dotest, dosep, and lldbtest.py into a couple
>>>>>> different files by breaking out things like TestBase, etc into separate
>>>>>> files.  So that it's easier to keep a mental map of where different code is.
>>>>>>
>>>>>> On Wed, Dec 2, 2015 at 11:26 AM Todd Fiala <todd.fiala at gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>>> On Wed, Dec 2, 2015 at 11:20 AM, Todd Fiala <todd.fiala at gmail.com>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> Yeah I'd be good with that.  I can change that as well.
>>>>>>>>
>>>>>>>> -Todd
>>>>>>>>
>>>>>>>> On Wed, Dec 2, 2015 at 11:10 AM, Zachary Turner <zturner at google.com
>>>>>>>> > wrote:
>>>>>>>>
>>>>>>>>> Also another stylistic suggestion.  I've been thinking about how
>>>>>>>>> to more logically organize all the source files now that we have a
>>>>>>>>> package.  So it makes sense conceptually to group all of the different
>>>>>>>>> result formatters under a subpackage called formatters.  So right now
>>>>>>>>> you've got lldbsuite.test.basic_results_formatter.
>>>>>>>>> BasicResultsFormatter but it might make sense for this to be
>>>>>>>>> lldbsuite.test.formatters.basic.BasicResultsFormatter.  If you do things
>>>>>>>>> this way, it can actually result in a substantially shorter command line,
>>>>>>>>> because the --results-formatter option can use lldbsuite.test.formatters as
>>>>>>>>> a starting point.  So you could instead write:
>>>>>>>>>
>>>>>>>>> test/dotest.py --results-formatter basic
>>>>>>>>>
>>>>>>>>> dotest then looks for a `basic.py` module in the
>>>>>>>>> `lldbsuite.test.formatters` package, looks for a class inside with a
>>>>>>>>> @result_formatter decorator, and instantiates that.
>>>>>>>>>
>>>>>>>>> This has the advantage of making the command line shorter *and* a
>>>>>>>>> more logical source file organization.
>>>>>>>>>
>>>>>>>>
>>>>>>> The other thing that could allow me to do is possibly short-circuit
>>>>>>> the results formatter specifier so that, if just the module is specified,
>>>>>>> and if the module only has one ResultsFormatter-derived class, I can
>>>>>>> probably rig up code that figures out the right results formatter,
>>>>>>> shortening the required discriminator to something even shorter (i.e.
>>>>>>> module.classname becomes just module.)
>>>>>>>
>>>>>>>
>>>>>>>>
>>>>>>>>> On Wed, Dec 2, 2015 at 11:04 AM Zachary Turner <zturner at google.com>
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>> Can --results-file=stdout be the default so that we don't have to
>>>>>>>>>> specify that?
>>>>>>>>>>
>>>>>>>>>> On Wed, Dec 2, 2015 at 11:02 AM Todd Fiala via lldb-dev <
>>>>>>>>>> lldb-dev at lists.llvm.org> wrote:
>>>>>>>>>>
>>>>>>>>>>> Also, all the text in the summary is fixed-width lined up
>>>>>>>>>>> nicely, which may not show in the commit message description if you're
>>>>>>>>>>> using a variable-width font.  On a terminal it looks nice.
>>>>>>>>>>>
>>>>>>>>>>> On Wed, Dec 2, 2015 at 11:01 AM, Todd Fiala <
>>>>>>>>>>> todd.fiala at gmail.com> wrote:
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> On Wed, Dec 2, 2015 at 10:57 AM, Todd Fiala <
>>>>>>>>>>>> todd.fiala at gmail.com> wrote:
>>>>>>>>>>>>
>>>>>>>>>>>>> Hi all,
>>>>>>>>>>>>>
>>>>>>>>>>>>> I just put up an optional test results formatter that is a
>>>>>>>>>>>>> prototype of what we may move towards for our default test summary
>>>>>>>>>>>>> results.  It went in here:
>>>>>>>>>>>>>
>>>>>>>>>>>>> r254530
>>>>>>>>>>>>>
>>>>>>>>>>>>> and you can try it out with something like:
>>>>>>>>>>>>>
>>>>>>>>>>>>> time test/dotest.py --executable `pwd`/build/Debug/lldb
>>>>>>>>>>>>> --results-formatter
>>>>>>>>>>>>> lldbsuite.test.basic_results_formatter.BasicResultsFormatter --results-file
>>>>>>>>>>>>> st
>>>>>>>>>>>>> out
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>> I cut and paste my line, but more than likely for most people
>>>>>>>>>>>> you'd just want this:
>>>>>>>>>>>>
>>>>>>>>>>>> test/dotest.py --results-formatter
>>>>>>>>>>>> lldbsuite.test.basic_results_formatter.BasicResultsFormatter --results-file
>>>>>>>>>>>> stdout
>>>>>>>>>>>>
>>>>>>>>>>>> The other stuff was specific to my setup.  That line assumes
>>>>>>>>>>>> you run from the lldb source dir root.
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> Let me know if this satisfies the basic needs of counts and
>>>>>>>>>>>>> whatnot.  It counts test method runs rather than all the oddball "file,
>>>>>>>>>>>>> class, etc." counts we had before.
>>>>>>>>>>>>>
>>>>>>>>>>>>> It prints out the Details section when there are details, and
>>>>>>>>>>>>> keeps it nice and clean when there are none.
>>>>>>>>>>>>>
>>>>>>>>>>>>> It also mentions a bit about test reruns up top, but that
>>>>>>>>>>>>> won't come into play until I get the multi-test-pass,
>>>>>>>>>>>>> single-worker/low-load mechanism in place, which will depend on newer rerun
>>>>>>>>>>>>> count awareness support.
>>>>>>>>>>>>>
>>>>>>>>>>>>> The change also cleans up places where the test event
>>>>>>>>>>>>> framework was using string codes and replaces them with symbolic constants.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Let me know what you think.  I can tweak it as needed to
>>>>>>>>>>>>> address testbot and other needs.  Once it looks reasonable, I'd like to
>>>>>>>>>>>>> move over to using it by default in the parallel test runner rather than
>>>>>>>>>>>>> the legacy support.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Thanks!
>>>>>>>>>>>>> --
>>>>>>>>>>>>> -Todd
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> --
>>>>>>>>>>>> -Todd
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> --
>>>>>>>>>>> -Todd
>>>>>>>>>>> _______________________________________________
>>>>>>>>>>> lldb-dev mailing list
>>>>>>>>>>> lldb-dev at lists.llvm.org
>>>>>>>>>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> -Todd
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> -Todd
>>>>>>>
>>>>>>
>>>
>>>
>>> --
>>> -Todd
>>>
>>
>>
>>
>> --
>> -Todd
>>
>


-- 
-Todd
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