Enable codecov for pghoard repository

.github/workflows/build.yml

@@ -81,4 +81,9 @@ jobs:
           pip install -e .
 
       - id: unittest
-        run: make unittest
+        run: make coverage
+
+      - id: upload-codecov
+        uses: codecov/codecov-action@v2
+        with:
+          verbose: true

Makefile

@@ -28,12 +28,13 @@ fmt: version
 
 .PHONY: coverage
 coverage: version
-	$(PYTHON) -m pytest $(PYTEST_ARG) --cov-report term-missing --cov pghoard test/
+	$(PYTHON) -m pytest $(PYTEST_ARG) --cov-report term-missing --cov-report xml:coverage.xml \
+		--cov pghoard test/
 
 .PHONY: clean
 clean:
 	$(RM) -r *.egg-info/ build/ dist/ rpm/
-	$(RM) ../pghoard_* test-*.xml $(generated)
+	$(RM) ../pghoard_* test-*.xml coverage.xml $(generated)
 
 pghoard/version.py: version.py
 	$(PYTHON) $^ $@

README.rst

@@ -3,6 +3,8 @@ PGHoard |BuildStatus|_
 
 .. |BuildStatus| image:: https://github.com/aiven/pghoard/actions/workflows/build.yml/badge.svg?branch=main
 .. _BuildStatus: https://github.com/aiven/pghoard/actions
+.. image:: https://codecov.io/gh/aiven/pghoard/branch/main/graph/badge.svg?token=nLr7M7hvCx
+   :target: https://codecov.io/gh/aiven/pghoard
 
 ``pghoard`` is a PostgreSQL® backup daemon and restore tooling that stores backup data in cloud object stores.
 

codecov.yml

@@ -0,0 +1,15 @@
+coverage:
+  status:
+    project:
+      default:
+        # basic
+        target: auto
+        threshold: 0%
+        base: auto
+       # advanced settings
+        branches:
+          - main
+        if_ci_failed: error #success, failure, error, ignore
+        informational: true
+        only_pulls: false
+