Drop codecov from CI and readme

.github/workflows/ci.yml

@@ -31,12 +31,17 @@ jobs:
           toolchain: stable
       - name: Build LibCST
         run: hatch -vv env create
-      - name: Tests
+      - name: Native Parser Tests
         run: hatch run test
       - name: Pure Parser Tests
         env:
+          COVERAGE_FILE: .coverage.pure
           LIBCST_PARSER_TYPE: pure
         run: hatch run test
+      - name: Coverage
+        run: |
+          hatch run coverage combine .coverage.pure
+          hatch run coverage report
 
   # Run linters
   lint:
@@ -71,37 +76,6 @@ jobs:
         run: pip install -U hatch
       - run: hatch run typecheck
 
-  # Upload test coverage
-  coverage:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-      - uses: actions/setup-python@v5
-        with:
-          cache: pip
-          cache-dependency-path: "pyproject.toml"
-          python-version: "3.10"
-      - name: Install hatch
-        run: pip install -U hatch
-      - name: Generate Coverage
-        run: |
-          hatch run coverage run setup.py test
-          hatch run coverage xml -i
-      - uses: codecov/codecov-action@v4
-        env:
-          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
-        with:
-          files: coverage.xml
-          fail_ci_if_error: true
-          verbose: true
-      - name: Archive Coverage
-        uses: actions/upload-artifact@v4
-        with:
-          name: coverage
-          path: coverage.xml
-
   # Build the docs
   docs:
     runs-on: ubuntu-latest

README.rst

@@ -4,7 +4,7 @@
 
 A Concrete Syntax Tree (CST) parser and serializer library for Python
 
-|support-ukraine| |readthedocs-badge| |ci-badge| |codecov-badge| |pypi-badge| |pypi-download| |notebook-badge|
+|support-ukraine| |readthedocs-badge| |ci-badge| |pypi-badge| |pypi-download| |notebook-badge|
 
 .. |support-ukraine| image:: https://img.shields.io/badge/Support-Ukraine-FFD500?style=flat&labelColor=005BBB
    :alt: Support Ukraine - Help Provide Humanitarian Aid to Ukraine.
@@ -18,10 +18,6 @@ A Concrete Syntax Tree (CST) parser and serializer library for Python
    :target: https://github.com/Instagram/LibCST/actions/workflows/build.yml?query=branch%3Amain
    :alt: Github Actions
 
-.. |codecov-badge| image:: https://codecov.io/gh/Instagram/LibCST/branch/main/graph/badge.svg
-   :target: https://codecov.io/gh/Instagram/LibCST/branch/main
-   :alt: CodeCov
-
 .. |pypi-badge| image:: https://img.shields.io/pypi/v/libcst.svg
    :target: https://pypi.org/project/libcst
    :alt: PYPI

pyproject.toml

@@ -21,7 +21,7 @@ dependencies = ["pyyaml>=5.2"]
 [project.optional-dependencies]
 dev = [
     "black==23.12.1",
-    "coverage>=4.5.4",
+    "coverage[toml]>=4.5.4",
     "build>=0.10.0",
     "fixit==2.1.0",
     "flake8==7.0.0",
@@ -51,6 +51,12 @@ Changelog = "https://github.com/Instagram/LibCST/blob/main/CHANGELOG.md"
 target-version = ["py39"]
 extend-exclude = '^/native/' # Prepend "^/" to specify root file/folder. See https://black.readthedocs.io/en/stable/usage_and_configuration/the_basics.html#configuration-format
 
+[tool.coverage.report]
+fail_under = 93
+precision = 1
+show_missing = true
+skip_covered = true
+
 [tool.hatch.envs.default]
 features = ["dev"]
 
@@ -64,7 +70,7 @@ lint = [
     "python -m slotscheck libcst",
     "python scripts/check_copyright.py",
 ]
-test = ["python --version", "python -m libcst.tests"]
+test = ["python --version", "python -m coverage run -m libcst.tests"]
 typecheck = ["pyre --version", "pyre check"]
 
 [tool.slotscheck]