perf: run tests in parallel with pytest-xdist (ci)

.github/workflows/pytest.yml

@@ -63,7 +63,7 @@ jobs:
         mkdir testing/log
     - name: Run Tests
       run: |
-        pytest -p no:cacheprovider --cov --reuse-db
+        pytest -p no:cacheprovider --cov --reuse-db --numprocesses=auto --dist=loadscope
         coveralls --service=github
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -19,6 +19,7 @@ env2
 env3
 
 .coverage
+.coverage.*
 htmlcov
 
 build

pyproject.toml

@@ -84,6 +84,7 @@ tests = [
   "pytest-dotenv~=0.5.2",
   "pytest-mock~=3.7.0", # 3.7.0 drops Python 3.6 support, https://pytest-mock.readthedocs.io/en/latest/changelog.html
   "pytest-randomly~=3.12.0", # 3.13.0 drops Python 3.7 support, https://github.com/pytest-dev/pytest-randomly/blob/main/CHANGELOG.rst#3120-2022-05-11
+  "pytest-xdist~=3.3.1",
 ]
 [project.urls]
 Changelog = "https://github.com/rdmorganiser/rdmo/blob/master/CHANGELOG.md"

rdmo/projects/tests/test_view_project.py

@@ -606,7 +606,7 @@ def test_project_view(db, client, username, password, project_id):
 @pytest.mark.parametrize('username,password', users)
 @pytest.mark.parametrize('project_id', projects)
 @pytest.mark.parametrize('export_format', export_formats)
-def test_project_view_export(db, client, username, password, project_id, export_format):
+def test_project_view_export(db, client, username, password, project_id, export_format, files):
     client.login(username=username, password=password)
     project_views = Project.objects.get(pk=project_id).views.all()