Create codecov.yml

Author: stacksjb

.github/workflows/codecov.yml

@@ -0,0 +1,48 @@
+name: Code Coverage
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  coverage:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          components: llvm-tools-preview
+          override: true
+
+      - name: Install grcov
+        run: cargo install grcov
+
+      - name: Generate code coverage
+        env:
+          CARGO_INCREMENTAL: "0"
+          RUSTFLAGS: "-Cinstrument-coverage"
+          RUSTDOCFLAGS: "-Cinstrument-coverage"
+          LLVM_PROFILE_FILE: "coverage-%p-%m.profraw"
+        run: |
+          cargo test --workspace --all-targets
+          grcov . \
+            --binary-path ./target/debug/ \
+            -s . \
+            -t cobertura \
+            --branch \
+            --ignore-not-existing \
+            --ignore "/*" \
+            -o coverage.xml
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v3
+        with:
+          files: coverage.xml
+          fail_ci_if_error: true