Use local coverage (#1109)

Author: blink1073

.github/workflows/ci.yml

@@ -57,17 +57,24 @@ jobs:
         run: |
           hatch run cov:nowarn || hatch run test:nowarn --lf
 
-      - name: Coverage
-        run: |
-          pip install codecov coverage[toml]
-          codecov
-
       - name: Check Launcher
         run: |
           pip install .
           cd $HOME
           python -m ipykernel_launcher --help
 
+      - uses: jupyterlab/maintainer-tools/.github/actions/upload-coverage@v1
+
+  coverage:
+    runs-on: ubuntu-latest
+    needs:
+      - build
+    steps:
+      - uses: actions/checkout@v3
+      - uses: jupyterlab/maintainer-tools/.github/actions/report-coverage@v1
+        with:
+          fail_under: 80
+
   test_lint:
     name: Test Lint
     runs-on: ubuntu-latest
@@ -190,7 +197,7 @@ jobs:
   tests_check: # This job does nothing and is only used for the branch protection
     if: always()
     needs:
-      - build
+      - coverage
       - test_docs
       - test_without_debugpy
       - test_miniumum_versions

README.md

@@ -1,7 +1,6 @@
 # IPython Kernel for Jupyter
 
 [![Build Status](https://github.com/ipython/ipykernel/actions/workflows/ci.yml/badge.svg?query=branch%3Amain++)](https://github.com/ipython/ipykernel/actions/workflows/ci.yml/badge.svg?query=branch%3Amain++)
-[![codecov](https://codecov.io/gh/ipython/ipykernel/branch/main/graph/badge.svg?token=SyksDOcIJa)](https://codecov.io/gh/ipython/ipykernel)
 [![Documentation Status](https://readthedocs.org/projects/ipykernel/badge/?version=latest)](http://ipykernel.readthedocs.io/en/latest/?badge=latest)
 
 This package provides the IPython kernel for Jupyter.

codecov.yml

@@ -191,6 +191,8 @@ exclude_lines = [
 ]
 
 [tool.coverage.run]
+relative_files = true
+source = ["ipykernel"]
 omit = [
   "ipykernel/tests/*",
   "ipykernel/datapub.py",