Use local coverage

.github/workflows/test.yml

@@ -32,10 +32,15 @@ jobs:
       - name: Run the tests
         run: |
           hatch run cov:test || hatch run test:test --lf
-      - name: Coverage
-        run: |
-          pip install codecov coverage[toml]
-          codecov
+      - uses: jupyterlab/maintainer-tools/.github/actions/upload-coverage@v1
+
+  coverage:
+    runs-on: ubuntu-latest
+    needs:
+      - test
+    steps:
+      - uses: actions/checkout@v3
+      - uses: jupyterlab/maintainer-tools/.github/actions/report-coverage@v1
 
   check_release:
     runs-on: ubuntu-latest
@@ -134,7 +139,7 @@ jobs:
   tests_check: # This job does nothing and is only used for the branch protection
     if: always()
     needs:
-      - test
+      - coverage
       - test_lint
       - docs
       - check_release

README.md

@@ -1,7 +1,6 @@
 # Terminado
 
 [![Build Status](https://github.com/jupyter/terminado/actions/workflows/test.yml/badge.svg?query=branch%3Amain++)](https://github.com/jupyter/terminado/actions/workflows/test.yml/badge.svg?query=branch%3Amain++)
-[![codecov](https://codecov.io/gh/jupyter/terminado/branch/main/graph/badge.svg?token=Ih2XfDqyD1)](https://codecov.io/gh/jupyter/terminado)
 [![Documentation Status](https://readthedocs.org/projects/terminado/badge/?version=latest)](http://terminado.readthedocs.io/en/latest/?badge=latest)
 
 This is a [Tornado](http://tornadoweb.org/) websocket backend for the

pyproject.toml

@@ -93,6 +93,10 @@ exclude_lines = [
 "@(abc\\.)?abstractmethod",
 ]
 
+[tool.coverage.run]
+relative_files = true
+source = ["terminado"]
+
 [tool.mypy]
 check_untyped_defs = true
 disallow_incomplete_defs = true