Refresh test workflow and associated config, accept podmain test failure for now

.github/workflows/test.yaml

@@ -0,0 +1,132 @@
+# This is a GitHub workflow defining a set of jobs with a set of steps.
+# ref: https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions
+#
+name: Tests
+
+on:
+  pull_request:
+    paths-ignore:
+      - "docs/**"
+      - "**.md"
+      - ".github/workflows/*.yaml"
+      - "!.github/workflows/test.yaml"
+  push:
+    paths-ignore:
+      - "docs/**"
+      - "**.md"
+      - ".github/workflows/*.yaml"
+      - "!.github/workflows/test.yaml"
+    branches-ignore:
+      - "dependabot/**"
+      - "pre-commit-ci-update-config"
+    tags: ["**"]
+  workflow_dispatch:
+
+jobs:
+  test:
+    runs-on: ubuntu-22.04
+    timeout-minutes: 10
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - python-version: "3.7"
+            pip-install-spec: "jupyterhub==1.0.0 sqlalchemy==1.*"
+          - python-version: "3.8"
+            pip-install-spec: "jupyterhub==2.* sqlalchemy==1.*"
+          - python-version: "3.9"
+            pip-install-spec: "jupyterhub==3.*"
+          - python-version: "3.11"
+            pip-install-spec: "jupyterhub==4.*"
+          - python-version: "3.11"
+            pip-install-spec: "jupyterhub==4.*"
+            test-variation: internal-ssl
+          - python-version: "3.11"
+            pip-install-spec: "jupyterhub==4.*"
+            test-variation: podman
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - uses: actions/setup-node@v3
+        with:
+          node-version: "18"
+
+      - name: setup docker swarm
+        run: docker swarm init
+
+      - name: Install Python dependencies
+        run: |
+          pip install ${{ matrix.pip-install-spec }}
+          pip install -e "." -r dev-requirements.txt
+
+      - name: List Python dependencies
+        run: |
+          pip freeze
+
+      - name: Install Node dependencies
+        run: |
+          npm install -g configurable-http-proxy
+
+      - name: Run tests
+        if: matrix.test-variation == ''
+        run: |
+          pytest tests --cov=dockerspawner
+
+      - name: Run examples/internal-ssl tests
+        if: matrix.test-variation == 'internal-ssl'
+        # FIXME: --cov=dockerspawner is omitted as the tested code lives inside
+        #        the built dockerspawner image, so --cov=dockerspawner
+        #        referencing the local source code doesn't get us test coverage.
+        #
+        run: |
+          pytest examples/internal-ssl --capture=no
+
+      - name: Run podman tests
+        continue-on-error: true
+        if: matrix.test-variation == 'podman'
+        # Podman's system service is started as a user managed process
+        # (user-mode / rootless), and the docker-api provided by podman is used
+        # by setting DOCKER_HOST to the podman provided docker-api.
+        #
+        # ref: https://docs.podman.io/en/latest/markdown/podman-system-service.1.html
+        # ref: https://docker-py.readthedocs.io/en/stable/client.html#envvar-DOCKER_HOST
+        #
+        run: |
+          # Default is unix://$XDG_RUNTIME_DIR/podman/podman.sock but XDG_RUNTIME_DIR may not be set
+          export DOCKER_HOST=unix://$HOME/podman.sock
+
+          podman system service --time=0 $DOCKER_HOST &
+
+          for n in $(seq 1 10); do
+            if ! docker version &>/dev/null; then
+              echo "podman system service - starting..."
+              sleep 1
+            else
+              echo "podman system service - started!"
+              echo ""
+              break
+            fi
+          done
+
+          # FIXME: we run into an error described in
+          #        https://github.com/containers/podman/blob/main/troubleshooting.md#26-running-containers-with-resource-limits-fails-with-a-permissions-error
+          #
+          #        This is a check for permissions of relevance, where we
+          #        conclude we get "memory pids" on ubuntu-22.04. This confirms
+          #        that we need additional permissions for the podman system
+          #        service we have started as the current user, lacking such
+          #        permissions.
+          #
+          #        If this is resolved, also remove the continue-on-error
+          #        section above.
+          #
+          cat "/sys/fs/cgroup/user.slice/user-$(id -u).slice/user@$(id -u).service/cgroup.controllers"
+
+          pytest tests/test_dockerspawner.py --cov=dockerspawner
+
+      # GitHub action reference: https://github.com/codecov/codecov-action
+      - uses: codecov/codecov-action@v3

dev-requirements.txt

@@ -1,7 +1,5 @@
-codecov
 netifaces
 notebook<7
-pyflakes
 pytest>=3.6
 pytest-asyncio
 pytest-cov

pyproject.toml

@@ -13,7 +13,6 @@ profile = "black"
 [tool.black]
 skip-string-normalization = true
 target_version = [
-    "py36",
     "py37",
     "py38",
     "py39",
@@ -27,7 +26,15 @@ target_version = [
 # ref: https://docs.pytest.org/en/stable/
 #
 [tool.pytest.ini_options]
-addopts = "--verbose --color=yes --durations=10"
+addopts = "--verbose --color=yes --durations=10 --maxfail=1"
 asyncio_mode = "auto"
-# Ignore thousands of tests in dependencies installed in a virtual environment
-norecursedirs = "lib lib64"
+testpaths = ["tests"]
+# These markers are registered to avoid warnings triggered by importing from
+# jupyterhub.tests.test_api.
+markers = [
+    "role",
+    "user",
+    "slow",
+    "group",
+    "services",
+]

tests/conftest.py

@@ -118,8 +118,9 @@ def docker():
                 c.remove()
         try:
             services = d.services.list()
-        except APIError:
+        except (APIError, TypeError):
             # e.g. services not available
+            # podman gives TypeError
             return
         else:
             for s in services: