Run tests as part of CI

.github/workflows/test_suite.yml

@@ -0,0 +1,49 @@
+name: 'Install PyGEM and Run Test Suite'
+
+on:
+  push:
+    branches:
+      - master
+      - dev
+    paths:
+      - '**.py'
+      - '.github/workflows/test_suite.yml'
+      - 'pyproject.toml'
+
+  pull_request:
+    paths:
+      - '**.py'
+      - '.github/workflows/test_suite.yml'
+      - 'pyproject.toml'
+
+  # Run test suite every Saturday at 1AM GMT (1 hour after the Docker image is updated)
+  schedule:
+    - cron: '0 1 * * 6'
+
+# Stop the workflow if a new one is started
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  test_suite:
+    name: 'Test suite'
+    runs-on: ubuntu-latest
+
+    # Use pygem:latest for master branch and pygem:dev otherwise
+    container:
+      image: ghcr.io/pygem-community/pygem:${{ github.ref == 'refs/heads/master' && 'latest' || 'dev' }}
+      options: --user root
+
+    steps:
+      - name: 'Checkout the repo'
+        id: checkout
+        uses: actions/checkout@v4
+
+      - name: 'Reinstall PyGEM'
+        run: pip install --break-system-packages -e .
+
+      - name: 'Run tests'
+        run: |
+          python3 -m coverage erase
+          python3 -m pytest --cov=pygem -v --durations=20 pygem/tests

pyproject.toml

@@ -34,6 +34,8 @@ jupyter = "^1.1.1"
 arviz = "^0.20.0"
 oggm = "^1.6.2"
 ruamel-yaml = "^0.18.10"
+pytest = ">=8.3.4"
+pytest-cov = ">=6.0.0"
 
 [tool.poetry.scripts]
 initialize = "pygem.bin.op.initialize:main"
@@ -53,4 +55,9 @@ duplicate_gdirs = "pygem.bin.op.duplicate_gdirs:main"
 
 [build-system]
 requires = ["poetry-core"]
-build-backend = "poetry.core.masonry.api"
+build-backend = "poetry.core.masonry.api"
+
+[tool.coverage.report]
+omit = ["pygem/tests/*"]
+show_missing = true
+skip_empty = true