chore: frozen CI and coverage

.github/workflows/tests.yml

@@ -35,6 +35,16 @@ jobs:
         uses: prefix-dev/setup-pixi@5185adfbffb4bd703da3010310260805d89ebb11 # v0.9.6
         with:
           environments: ${{ matrix.environment }}
+          # Install strictly from the committed pixi.lock so CI runs against the
+          # locked dependencies. The lock file is refreshed by the weekly
+          # update_pixi_lock_files workflow.
+          frozen: true
 
       - name: Run tests
         run: pixi run -e ${{ matrix.environment }} tests
+
+      - name: Upload coverage reports to Codecov
+        uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f # v7.0.0
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          slug: probabl-ai/skore-cli

.gitignore

@@ -127,6 +127,9 @@ ENV/
 env.bak/
 venv.bak/
 
+# pixi
+.pixi/
+
 # direnv
 .direnv
 .envrc

codecov.yml

@@ -0,0 +1,24 @@
+# similar to scikit-learn/skrub .codecov.yml
+comment: false
+
+coverage:
+  wait_for_ci: true
+
+  status:
+    project:
+      default:
+        # Commits pushed to the main branch should not make the overall
+        # project coverage decrease by more than 1%:
+        target: auto
+        threshold: 1%
+    patch:
+      default:
+        # Be tolerant on slight code coverage diff on PRs to limit
+        # noisy red coverage status on GitHub PRs.
+        # Note The coverage stats are still uploaded
+        # to codecov so that PR reviewers can see uncovered lines
+        # in the GitHub diff if they install the codecov browser
+        # extension:
+        # https://github.com/codecov/browser-extension
+        target: auto
+        threshold: 1%