Speed up test suite by invoking tests in parallel, using `pytest-xdist` (#690)

.coveragerc

@@ -1,6 +1,7 @@
 [run]
-disable_warnings = no-data-collected
+data_file = .coverage-reports/.coverage
 branch = True
+parallel = True
 source =
     apprise
 

dev-requirements.txt

@@ -2,5 +2,6 @@ coverage
 flake8
 pytest
 pytest-cov
+pytest-xdist
 tox
 babel

setup.cfg

@@ -16,7 +16,7 @@ builtins = _
 test=pytest
 
 [tool:pytest]
-addopts = --verbose -ra
+addopts = --verbosity=3 -ra
 python_files = test/test_*.py
 norecursedirs=test/helpers
 filterwarnings =

tox.ini

@@ -12,7 +12,7 @@ deps=
     -r{toxinidir}/dev-requirements.txt
 commands =
     python setup.py compile_catalog
-    coverage run --parallel -m pytest {posargs}
+    coverage run -m pytest {posargs}
     flake8 . --count --show-source --statistics
 
 [testenv:py36]
@@ -23,7 +23,7 @@ deps=
    -r{toxinidir}/all-plugin-requirements.txt
 commands =
     python setup.py compile_catalog
-    coverage run --parallel -m pytest {posargs}
+    coverage run -m pytest {posargs}
     flake8 . --count --show-source --statistics
 
 [testenv:py37]
@@ -34,7 +34,7 @@ deps=
    -r{toxinidir}/all-plugin-requirements.txt
 commands =
     python setup.py compile_catalog
-    coverage run --parallel -m pytest {posargs}
+    coverage run -m pytest {posargs}
 
 [testenv:py38]
 deps=
@@ -44,7 +44,7 @@ deps=
    -r{toxinidir}/all-plugin-requirements.txt
 commands =
     python setup.py compile_catalog
-    coverage run --parallel -m pytest {posargs}
+    coverage run -m pytest {posargs}
     flake8 . --count --show-source --statistics
 
 [testenv:py39]
@@ -55,7 +55,7 @@ deps=
    -r{toxinidir}/all-plugin-requirements.txt
 commands =
     python setup.py compile_catalog
-    coverage run --parallel -m pytest {posargs}
+    coverage run -m pytest {posargs}
     flake8 . --count --show-source --statistics
 
 [testenv:py310]
@@ -66,7 +66,7 @@ deps=
    -r{toxinidir}/all-plugin-requirements.txt
 commands =
     python setup.py compile_catalog
-    coverage run --parallel -m pytest {posargs}
+    coverage run -m pytest {posargs}
     flake8 . --count --show-source --statistics
 
 
@@ -76,7 +76,7 @@ deps=
    -r{toxinidir}/dev-requirements.txt
 commands =
     python setup.py compile_catalog
-    coverage run --parallel -m pytest {posargs}
+    coverage run -m pytest {posargs}
     flake8 . --count --show-source --statistics
 
 [testenv:pypy36]
@@ -88,7 +88,7 @@ deps=
    -r{toxinidir}/all-plugin-requirements.txt
 commands =
     python setup.py compile_catalog
-    coverage run --parallel -m pytest {posargs}
+    coverage run -m pytest {posargs}
     flake8 . --count --show-source --statistics
 
 [testenv:pypy37]
@@ -100,7 +100,7 @@ deps=
    -r{toxinidir}/all-plugin-requirements.txt
 commands =
     python setup.py compile_catalog
-    coverage run --parallel -m pytest {posargs}
+    coverage run -m pytest {posargs}
 
 [testenv:pypy38]
 deps=
@@ -111,7 +111,7 @@ deps=
    -r{toxinidir}/all-plugin-requirements.txt
 commands =
     python setup.py compile_catalog
-    coverage run --parallel -m pytest {posargs}
+    coverage run -m pytest {posargs}
     flake8 . --count --show-source --statistics
 
 [testenv:pypy39]
@@ -123,7 +123,7 @@ deps=
    -r{toxinidir}/all-plugin-requirements.txt
 commands =
     python setup.py compile_catalog
-    coverage run --parallel -m pytest {posargs}
+    coverage run -m pytest {posargs}
     flake8 . --count --show-source --statistics
 
 [testenv:coverage-report]
@@ -131,4 +131,5 @@ deps = coverage
 skip_install = true
 commands=
    coverage combine
+   coverage xml
    coverage report