Enable coverage report

Author: mbarbin

.github/workflows/ci.yml

@@ -43,7 +43,19 @@ jobs:
         run: opam exec -- dune build @all @lint
 
       - name: Run tests
-        run: opam exec -- dune runtest
+        run: |
+          mkdir $BISECT_DIR
+          opam exec -- dune runtest --instrument-with bisect_ppx
+        env:
+          BISECT_DIR: ${{ runner.temp }}/_bisect_ppx_data
+          BISECT_FILE: ${{ runner.temp }}/_bisect_ppx_data/data
+
+      - name: Send coverage report to Coveralls
+        run: opam exec -- bisect-ppx-report send-to Coveralls --coverage-path $BISECT_DIR
+        env:
+          BISECT_DIR: ${{ runner.temp }}/_bisect_ppx_data
+          COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          PULL_REQUEST_NUMBER: ${{ github.event.number }}
 
       - name: Check for uncommitted changes
         run: git diff --exit-code

README.md

@@ -1,6 +1,7 @@
 # auto-format
 
 [![CI Status](https://github.com/mbarbin/auto-format/workflows/ci/badge.svg)](https://github.com/mbarbin/auto-format/actions/workflows/ci.yml)
+[![Coverage Status](https://coveralls.io/repos/github/mbarbin/auto-format/badge.svg?branch=main)](https://coveralls.io/github/mbarbin/auto-format?branch=main)
 
 With this opinionated library you can build normalized auto-format commands for custom languages, that can be integrated with editors as well as `dune fmt`.