How can I adjust the number of threads with pytest + xdist?





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To run parallel tests on mobile devices, I use pytest + xdist.



I want to run as many threads as I have connected devices, no more.



I pass "-n 4" as command line argument, but I can't change it after test launch if I need 2 threads, not 4.



How can I adjust the number of threads from the my test code?










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    0















    To run parallel tests on mobile devices, I use pytest + xdist.



    I want to run as many threads as I have connected devices, no more.



    I pass "-n 4" as command line argument, but I can't change it after test launch if I need 2 threads, not 4.



    How can I adjust the number of threads from the my test code?










    share|improve this question

























      0












      0








      0








      To run parallel tests on mobile devices, I use pytest + xdist.



      I want to run as many threads as I have connected devices, no more.



      I pass "-n 4" as command line argument, but I can't change it after test launch if I need 2 threads, not 4.



      How can I adjust the number of threads from the my test code?










      share|improve this question














      To run parallel tests on mobile devices, I use pytest + xdist.



      I want to run as many threads as I have connected devices, no more.



      I pass "-n 4" as command line argument, but I can't change it after test launch if I need 2 threads, not 4.



      How can I adjust the number of threads from the my test code?







      pytest xdist pytest-asyncio






      share|improve this question













      share|improve this question











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      share|improve this question










      asked Nov 29 '18 at 1:22









      luninlunin

      12




      12
























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          I think you're looking for this.






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          • Unfortunately, this hook will not be called for conftest.py files, only for setuptools plugins. docs.pytest.org/en/latest/… So, I don't understand how use this hook in the conftest.py

            – lunin
            Nov 30 '18 at 15:24













          • Oh, so that means the documentation is not correct. Because on that page, they have specified # content of conftest.py.

            – Samarth
            Nov 30 '18 at 15:57



















          0














          if you have a minimal way to know it in python, i propose creating a python script that will call pytest.main with the correct arguments






          share|improve this answer
























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            2 Answers
            2






            active

            oldest

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            2 Answers
            2






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            0














            I think you're looking for this.






            share|improve this answer
























            • Unfortunately, this hook will not be called for conftest.py files, only for setuptools plugins. docs.pytest.org/en/latest/… So, I don't understand how use this hook in the conftest.py

              – lunin
              Nov 30 '18 at 15:24













            • Oh, so that means the documentation is not correct. Because on that page, they have specified # content of conftest.py.

              – Samarth
              Nov 30 '18 at 15:57
















            0














            I think you're looking for this.






            share|improve this answer
























            • Unfortunately, this hook will not be called for conftest.py files, only for setuptools plugins. docs.pytest.org/en/latest/… So, I don't understand how use this hook in the conftest.py

              – lunin
              Nov 30 '18 at 15:24













            • Oh, so that means the documentation is not correct. Because on that page, they have specified # content of conftest.py.

              – Samarth
              Nov 30 '18 at 15:57














            0












            0








            0







            I think you're looking for this.






            share|improve this answer













            I think you're looking for this.







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered Nov 29 '18 at 8:18









            SamarthSamarth

            337210




            337210













            • Unfortunately, this hook will not be called for conftest.py files, only for setuptools plugins. docs.pytest.org/en/latest/… So, I don't understand how use this hook in the conftest.py

              – lunin
              Nov 30 '18 at 15:24













            • Oh, so that means the documentation is not correct. Because on that page, they have specified # content of conftest.py.

              – Samarth
              Nov 30 '18 at 15:57



















            • Unfortunately, this hook will not be called for conftest.py files, only for setuptools plugins. docs.pytest.org/en/latest/… So, I don't understand how use this hook in the conftest.py

              – lunin
              Nov 30 '18 at 15:24













            • Oh, so that means the documentation is not correct. Because on that page, they have specified # content of conftest.py.

              – Samarth
              Nov 30 '18 at 15:57

















            Unfortunately, this hook will not be called for conftest.py files, only for setuptools plugins. docs.pytest.org/en/latest/… So, I don't understand how use this hook in the conftest.py

            – lunin
            Nov 30 '18 at 15:24







            Unfortunately, this hook will not be called for conftest.py files, only for setuptools plugins. docs.pytest.org/en/latest/… So, I don't understand how use this hook in the conftest.py

            – lunin
            Nov 30 '18 at 15:24















            Oh, so that means the documentation is not correct. Because on that page, they have specified # content of conftest.py.

            – Samarth
            Nov 30 '18 at 15:57





            Oh, so that means the documentation is not correct. Because on that page, they have specified # content of conftest.py.

            – Samarth
            Nov 30 '18 at 15:57













            0














            if you have a minimal way to know it in python, i propose creating a python script that will call pytest.main with the correct arguments






            share|improve this answer




























              0














              if you have a minimal way to know it in python, i propose creating a python script that will call pytest.main with the correct arguments






              share|improve this answer


























                0












                0








                0







                if you have a minimal way to know it in python, i propose creating a python script that will call pytest.main with the correct arguments






                share|improve this answer













                if you have a minimal way to know it in python, i propose creating a python script that will call pytest.main with the correct arguments







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Dec 3 '18 at 12:03









                RonnyRonny

                1,5691922




                1,5691922






























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