add codecov

.codecov.yml

@@ -0,0 +1,15 @@
+---
+codecov:
+  notify:
+    after_n_builds: 1
+    require_ci_to_pass: false
+
+coverage:
+  precision: 2
+  round: down
+  range: 50..75
+
+comment:
+  layout: "header, diff"
+  behavior: default
+  require_changes: false

.github/workflows/grcov.yml

@@ -0,0 +1,7 @@
+branch: true
+ignore-not-existing: true
+llvm: true
+filter: covered
+output-type: lcov
+output-path: ./lcov.info
+prefix-dir: /home/user/build/

.github/workflows/main.yml

@@ -61,11 +61,25 @@ jobs:
         run: ./build.sh --release
       - name: Run tests
         run: cargo test
+        env:
+          CARGO_INCREMENTAL: '0'
+          RUSTFLAGS: '-Zprofile -Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Zpanic_abort_tests'
+          RUSTDOCFLAGS: '-Zprofile -Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Zpanic_abort_tests'
       - name: Run doc tests
         run: cargo test --doc
       - name: Run cgroup tests
         working-directory: cgroups
         run: cargo test
+        env:
+          CARGO_INCREMENTAL: '0'
+          RUSTFLAGS: '-Zprofile -Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Zpanic_abort_tests'
+          RUSTDOCFLAGS: '-Zprofile -Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Zpanic_abort_tests'
+      - name: Coverage
+        uses: actions-rs/grcov@v0.1
+        with:
+          config: .github/grcov.yml
+      - name: Upload Results
+        uses: codecov/codecov-action@v2
   integration_tests:
     runs-on: ubuntu-latest
     strategy:

README.md

@@ -4,6 +4,7 @@
 [![GitHub commit activity](https://img.shields.io/github/commit-activity/m/containers/youki)](https://github.com/containers/youki/graphs/commit-activity)
 [![GitHub contributors](https://img.shields.io/github/contributors/containers/youki)](https://github.com/containers/youki/graphs/contributors)
 [![Github CI](https://github.com/containers/youki/actions/workflows/main.yml/badge.svg?branch=main)](https://github.com/containers/youki/actions)
+[![codecov](https://codecov.io/gh/containers/youki/branch/main/graph/badge.svg)](https://codecov.io/gh/containers/youki)
 
 <p align="center">
   <img src="docs/youki.png" width="230" height="230">