github: Report code coverage

.github/workflows/primary.yml

@@ -4,16 +4,16 @@ on:
   schedule:
     - cron: "0 0 * * 6"
   push:
-    branches: ["*"]
   pull_request:
     branches: [main]
+  workflow_dispatch:
 
 env:
   CARGO_TERM_COLOR: always
 
 jobs:
   clippy:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     timeout-minutes: 10
     steps:
       - uses: actions/checkout@v2
@@ -38,14 +38,41 @@ jobs:
     timeout-minutes: 10
     strategy:
       matrix:
-        os: [ubuntu-18.04, ubuntu-20.04]
+        os: [ubuntu-20.04, ubuntu-22.04]
     steps:
       - uses: actions/checkout@v2
       - uses: Swatinem/rust-cache@v1
-      - name: Build
-        run: cargo build --tests --verbose
-      - name: Run tests
-        run: cargo test --verbose
+      - uses: actions-rs/toolchain@v1
+        with:
+          components: llvm-tools-preview
+          override: true
+          toolchain: stable
+      - uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --all-features --no-fail-fast
+        env:
+          LLVM_PROFILE_FILE: "nldl-%p-%m.profraw"
+          RUSTFLAGS: '-Cinstrument-coverage'
+      - uses: actions-rs/cargo@v1
+        with:
+          command: install
+          args: grcov
+      - id: coverage
+        run: |
+          grcov \
+            --branch \
+            --ignore-not-existing \
+            --llvm \
+            --binary-path=target/debug/ \
+            --output-path=target/debug/lcov.info \
+            --output-type=lcov \
+            --source-dir=. \
+            .
+          echo '::set-output name=report::target/debug/lcov.info'
+      - uses: codecov/codecov-action@v2
+        with:
+          files: ${{ steps.coverage.outputs.report }}
 
   check-readme:
     runs-on: ubuntu-latest