CI: add code coverage (#409)

Signed-off-by: MarcoIeni <11428655+MarcoIeni@users.noreply.github.com>

2 files changed, 24 insertions, 0 deletions

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 51b967df..fa6e2e2a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -60,3 +60,26 @@ jobs:
   #       with:
   #         command: clippy
   #         args: -- -D warnings
+
+  coverage:
+    name: Code coverage
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+      - name: Install stable toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          override: true
+      - name: Run cargo-tarpaulin
+        uses: actions-rs/tarpaulin@v0.1
+        with:
+          args: '--ignore-tests --out Lcov --output-dir target/tarpaulin'
+      - name: Upload to Coveralls
+        # upload only if push
+        if: ${{ github.event_name == 'push' }}
+        uses: coverallsapp/github-action@master
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          path-to-lcov: './target/tarpaulin/lcov.info'
diff --git a/README.md b/README.md
index d7775aff..db56380f 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 [![Build Status](https://travis-ci.com/dandavison/delta.svg?branch=master)](https://travis-ci.com/dandavison/delta)
 [![Gitter](https://badges.gitter.im/dandavison-delta/community.svg)](https://gitter.im/dandavison-delta/community?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
 [![CI](https://github.com/dandavison/delta/workflows/Continuous%20Integration/badge.svg)](https://github.com/dandavison/delta/actions)
+[![Coverage Status](https://coveralls.io/repos/github/dandavison/delta/badge.svg?branch=master)](https://coveralls.io/github/dandavison/delta?branch=master)
 
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