CI: add code coverage

.github/workflows/test.yml

@@ -23,8 +23,10 @@ jobs:
       run: |
         pip install -e .
         pip install '.[test]'
-    - name: Run tests
+    - name: Test and generate coverage report
       run: |
-        pip list
-        pytest
-
+        pytest --cov=./tests --cov-report=xml --ignore=./brightest_path_lib/sandbox.py
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v3
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}

setup.py

@@ -23,6 +23,6 @@
         "brightest_path_lib.input"
         ]),
     install_requires=["numpy"],
-    extras_require={"test": ["pytest", "scikit-image", "pooch"]},
+    extras_require={"test": ["pytest", "pytest-cov", "scikit-image", "pooch"]},
     python_requires=">=3.7",
 )