Parallelize pytest with pytest-xdist (#1247)

Author: alexrudd2

.github/workflows/ci.yml

@@ -47,7 +47,7 @@ jobs:
             cmd: make -C doc/ html
             type: lint
           - name: pytest
-            cmd: pytest --cov=pymodbus --cov=test --cov-report=term-missing --cov-report=xml -v --full-trace --timeout=20
+            cmd: pytest --cov=pymodbus --cov=test --cov-report=term-missing --cov-report=xml -v --full-trace --timeout=20 --numprocesses auto
             type: test
         os:
           - name: Linux

check_ci.sh

@@ -10,5 +10,5 @@ black --safe --quiet examples/ pymodbus/ test/
 isort .
 pylint --recursive=y examples pymodbus test
 flake8
-pytest
+pytest --numprocesses auto
 echo "Ready to push"

requirements.txt

@@ -70,3 +70,4 @@ pytest==7.1.3
 pytest-asyncio==0.19.0
 pytest-cov==4.0.0
 pytest-timeout==2.1.0
+pytest-xdist==3.1.0