Add coverage badge and coverage threshold (gijzelaerr#637)

* Add coverage badge and coverage threshold

- Replace artifact upload with codecov/codecov-action@v5 in test workflow
- Add codecov badge to README.rst
- Add coverage threshold of 80% in pyproject.toml and codecov.yml

Closes gijzelaerr#619

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* Lower coverage threshold to 75% to match current coverage

Current coverage is 78% — set threshold to 75% to provide a safety net
without failing CI. Can be raised as coverage improves.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* Add project badges to README

Add PyPI version, Python versions, license, CI status, and Read the
Docs badges alongside the existing Codecov badge for a professional
landing page.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* Don't fail CI when Codecov upload fails

Codecov v5 requires a token for protected branches, causing
"Token required because branch is protected" errors that block CI.
Coverage upload is best-effort, not a gate.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: gijzelaerr

.github/workflows/test.yml

@@ -33,9 +33,9 @@ jobs:
           uv pip install ".[test]"
       - name: Run pytest
         run: uv run pytest --cov=snap7 --cov-report=xml --cov-report=term
-      - name: Upload coverage report
+      - name: Upload coverage to Codecov
         if: matrix.python-version == '3.13' && matrix.runs-on == 'ubuntu-24.04'
-        uses: actions/upload-artifact@v7
+        uses: codecov/codecov-action@v5
         with:
-          name: coverage-report
-          path: coverage.xml
+          files: coverage.xml
+          fail_ci_if_error: false

README.rst

@@ -1,3 +1,21 @@
+.. image:: https://img.shields.io/pypi/v/python-snap7.svg
+   :target: https://pypi.org/project/python-snap7/
+
+.. image:: https://img.shields.io/pypi/pyversions/python-snap7.svg
+   :target: https://pypi.org/project/python-snap7/
+
+.. image:: https://img.shields.io/github/license/gijzelaerr/python-snap7.svg
+   :target: https://github.com/gijzelaerr/python-snap7/blob/master/LICENSE
+
+.. image:: https://github.com/gijzelaerr/python-snap7/actions/workflows/test.yml/badge.svg
+   :target: https://github.com/gijzelaerr/python-snap7/actions/workflows/test.yml
+
+.. image:: https://readthedocs.org/projects/python-snap7/badge/
+   :target: https://python-snap7.readthedocs.io/en/latest/
+
+.. image:: https://codecov.io/gh/gijzelaerr/python-snap7/branch/master/graph/badge.svg
+   :target: https://codecov.io/gh/gijzelaerr/python-snap7
+
 About
 =====
 

codecov.yml

@@ -0,0 +1,5 @@
+coverage:
+  status:
+    project:
+      default:
+        target: 80%

pyproject.toml

@@ -64,6 +64,9 @@ strict = true
 # https://github.com/python/mypy/issues/2427#issuecomment-1419206807
 disable_error_code = ["method-assign", "attr-defined"]
 
+[tool.coverage.report]
+fail_under = 75
+
 [tool.ruff]
 output-format = "full"
 line-length = 130