Enhance CI workflow with code coverage support and toolchain updates

Author: Radu Racariu

.github/workflows/master-push.yaml

@@ -1,6 +1,4 @@
 
-# Based on https://github.com/actions-rs/meta/blob/master/recipes/msrv.md
-
 on: [push, pull_request]
 
 name: Build
@@ -9,95 +7,94 @@ jobs:
   check:
     name: Check
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        rust:
-          - stable
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Install toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: ${{ matrix.rust }}
-          override: true
+        uses: dtolnay/rust-toolchain@stable
 
       - name: Run cargo check
-        uses: actions-rs/cargo@v1
-        with:
-          command: check
+        run: cargo check
 
   test:
     name: Test Suite
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        rust:
-          - stable
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Install toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: ${{ matrix.rust }}
-          override: true
+        uses: dtolnay/rust-toolchain@stable
 
       - name: Run cargo test
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
+        run: cargo test
 
   fmt:
     name: Rustfmt
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        rust:
-          - stable
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Install toolchain
-        uses: actions-rs/toolchain@v1
+        uses: dtolnay/rust-toolchain@stable
         with:
-          toolchain: ${{ matrix.rust }}
-          override: true
-
-      - name: Install rustfmt
-        run: rustup component add rustfmt
+          components: rustfmt
 
       - name: Run cargo fmt
-        uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --all -- --check
+        run: cargo fmt --all -- --check
 
   clippy:
     name: Clippy
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        rust:
-          - stable
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Install toolchain
-        uses: actions-rs/toolchain@v1
+        uses: dtolnay/rust-toolchain@stable
         with:
-          toolchain: ${{ matrix.rust }}
-          override: true
-
-      - name: Install clippy
-        run: rustup component add clippy
+          components: clippy
 
       - name: Run cargo clippy
-        uses: actions-rs/cargo@v1
+        run: cargo clippy --workspace -- -D warnings
+
+  coverage:
+    name: Code Coverage
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: write
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+
+      - name: Install toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: llvm-tools-preview
+
+      - name: Install cargo-llvm-cov
+        uses: taiki-e/install-action@cargo-llvm-cov
+
+      - name: Generate code coverage
+        run: cargo llvm-cov --all-features --workspace --lcov --output-path lcov.info
+
+      - name: Generate HTML report
+        run: cargo llvm-cov report --lcov --input-files lcov.info --html --output-dir coverage/
+
+      - name: Upload HTML coverage report
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-report
+          path: coverage/
+          retention-days: 14
+
+      - name: Report coverage on PR
+        if: github.event_name == 'pull_request'
+        uses: romeovs/lcov-reporter-action@v0.4.0
         with:
-          command: clippy
-          args: --workspace -- -D warnings
+          lcov-file: lcov.info
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          filter-changed-files: true