Integrate codecov.io

We publish the test coverage reporting to codecov.io

.github/workflows/test_coverage.yml

@@ -27,3 +27,5 @@ jobs:
       # one for each of the above Python versions,
       # before all results are collected together
       - run: nox -s test-coverage
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

README.md

@@ -9,6 +9,7 @@ The goal of the `lalib` project is to create
 
 
 [![Test suite: Status](https://github.com/webartifex/lalib/actions/workflows/tests.yml/badge.svg)](https://github.com/webartifex/lalib/actions/workflows/tests.yml)
+[![Test coverage: codecov](https://codecov.io/github/webartifex/lalib/graph/badge.svg?token=J4LWOMVP0R)](https://codecov.io/github/webartifex/lalib)
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
 [![Type checking: mypy](https://www.mypy-lang.org/static/mypy_badge.svg)](https://mypy-lang.org/)
 [![Code linting: ruff](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/charliermarsh/ruff/main/assets/badge/v2.json)](https://github.com/astral-sh/ruff)

noxfile.py

@@ -1,6 +1,7 @@
 """Maintenance tasks run in isolated environments."""
 
 import collections
+import os
 import pathlib
 import random
 import re
@@ -311,7 +312,20 @@ def test_coverage_report(session: nox.Session) -> None:
     install_pinned(session, "coverage")
 
     session.run("python", "-m", "coverage", "combine")
-    session.run("python", "-m", "coverage", "report", "--fail-under=100")
+
+    if codecov_token := os.environ.get("CODECOV_TOKEN"):
+        install_unpinned(session, "codecov-cli")
+        session.run("python", "-m", "coverage", "xml", "--fail-under=0")
+        session.run(
+            "codecovcli",
+            "upload-process",
+            "--fail-on-error",
+            "--file=.cache/coverage/report.xml",
+            f"--token={codecov_token}",
+        )
+
+    else:
+        session.run("python", "-m", "coverage", "report", "--fail-under=100")
 
 
 @nox_session(name="test-docstrings", python=MAIN_PYTHON)

pyproject.toml

@@ -131,6 +131,11 @@ parallel = true
 source = ["lalib"]
 
 
+[tool.coverage.xml]
+
+output = ".cache/coverage/report.xml"
+
+
 
 [tool.flake8]