feat: add code coverage with cargo-llvm-cov and Codecov upload

.github/workflows/ci.yml

@@ -61,6 +61,39 @@ jobs:
       run: cargo +${{ matrix.rust-version }} test
 
 
+  coverage:
+    runs-on: ubuntu-24.04
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        submodules: true
+
+    - name: Install dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y \
+          libbpf-dev \
+          protobuf-compiler
+
+    - uses: actions/cache@v4
+      with:
+        path: |
+          ~/.cargo/bin/
+          ~/.cargo/registry/index/
+          ~/.cargo/registry/cache/
+          ~/.cargo/git/db/
+          target/
+        key: ${{ runner.os }}-${{ runner.arch }}-cargo-coverage-${{ hashFiles('**/Cargo.lock') }}
+
+    - name: Generate coverage
+      run: make coverage
+
+    - name: Upload to Codecov
+      uses: codecov/codecov-action@v5
+      with:
+        files: codecov.json
+        token: ${{ secrets.CODECOV_TOKEN }}
+
   format-check:
     runs-on: ubuntu-24.04
     env:

.gitignore

@@ -19,6 +19,7 @@ internalapi/
 results.xml
 logs/
 THIRD_PARTY_LICENSES.html
+codecov.json
 
 # clangd and compilation database
 .cache/

CHANGELOG.md

@@ -6,6 +6,8 @@ possible include a PR number for easier tracking.
 
 ## Next
 
+* feat: add code coverage with cargo-llvm-cov and Codecov upload (#745)
+
 ## 0.3.0
 
 * ROX-34663: Migrate from ubi-minimal to ubi-micro (#653)

Makefile

@@ -32,9 +32,13 @@ integration-tests:
 performance-tests:
 	make -C performance-tests
 
+coverage:
+	cargo llvm-cov --workspace --codecov --output-path codecov.json
+
 clean:
 	make -C tests clean
 	rm -f THIRD_PARTY_LICENSES.html
+	rm -f codecov.json
 
 format-check:
 	cargo fmt --check
@@ -44,4 +48,4 @@ format:
 	cargo fmt
 	make -C fact-ebpf format
 
-.PHONY: tag mock-server integration-tests image image-name licenses clean
+.PHONY: tag mock-server integration-tests image image-name licenses coverage clean