Hi Jeff,
since all the data handling is done in C++ land in GNU Radio anyways, the only difference
in test performance is when the Python code takes longer to evaluate the the result of
some flow graph.
For example:
if you write a test case where the data from a vector sink is compared to the data from
some reference numpy vector, and you do that with a test function that recognizes both
reference and test data are iterables, and then, in Python code, compares
element-by-element, then that's slow.
If you just did
self.assertTrue(numpy.array_equiv(reference, self.sink.data()))
that should be as fast as doing it C++.
Best regards,
Marcus
On 07.03.22 16:40, Josh Morman wrote:
Jeff,
When tests are done in C++, they also must be compiled, which adds to the overall gnuradio
compilation time. In-tree the c++ tests are reserved mainly for testing the really low
level like buffers.
I agree with you that an all c++ target makes debugging easy, but you can launch the
python flowgraphs with the GDB debugger using program: "/usr/bin/python3" and args:
/path/to/the/qa_xxx.py.
Josh
On Mon, Mar 7, 2022 at 8:37 AM Jeff S <e070...@hotmail.com <mailto:e070...@hotmail.com>>
wrote:
I started writing some QA tests which were missing for some blocks I’m
working on (in
maint-3.9). I decided to compare using Python vs using C++ when building new tests.
When I started looking into the C++ tests, it seems that there are not a lot of
examples around, so I started wondering why people may stick to Python over
C++.____
__ __
I found Python quicker to code and easier to see what’s being tested, but
C++ would
run the same test as the Python much quicker (according to the time output
from make
test). Writing in C++ also gives me the ability to run Visual Studio Code
in debug
easier and target sections of code under test, which is a very nice
feature. Visual
Studio Code seems to have problems with mixed languages under its visual
debugging.____
__ __
Are there other aspects of Python for QA tests that I’m missing as to why
it’s the
preferred method? I’m indifferent as to the tool used because I’ll use
whatever gets
the job done, so I’m not trying to make this a language pro/con
question.____
__ __
Thanks,____
Jeff____
