From 77a498441f87abf0e825d93dfab313aeb2707654 Mon Sep 17 00:00:00 2001
From: Mauro Ezequiel Moltrasio <mmoltras@redhat.com>
Date: Mon, 1 Jun 2026 12:14:27 +0200
Subject: [PATCH 1/2] feat: add code coverage with cargo-llvm-cov and Codecov
 upload

Add a coverage job to CI that instruments unit tests with cargo-llvm-cov,
generates a Codecov-compatible JSON report, and uploads it via the
codecov/codecov-action. A `make coverage` target is provided for local use.

Assisted-by: Claude Code (claude-opus-4-6)
---
 .github/workflows/ci.yml | 38 ++++++++++++++++++++++++++++++++++++++
 .gitignore               |  1 +
 CHANGELOG.md             |  2 ++
 Makefile                 |  6 +++++-
 4 files changed, 46 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 73b4f247..6eda3fb6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -61,6 +61,44 @@ 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: Install cargo-llvm-cov
+      run: |
+        rustup component add llvm-tools-preview
+        cargo install cargo-llvm-cov
+
+    - 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:
diff --git a/.gitignore b/.gitignore
index dc478a1e..29fe02fc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,6 +19,7 @@ internalapi/
 results.xml
 logs/
 THIRD_PARTY_LICENSES.html
+codecov.json
 
 # clangd and compilation database
 .cache/
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 86bcf5fe..76be7c95 100644
--- a/CHANGELOG.md
+++ b/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)
diff --git a/Makefile b/Makefile
index 55f58098..85fdd936 100644
--- a/Makefile
+++ b/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

From 66cb2e43a0d82828a8a6476839740bc115e77d6a Mon Sep 17 00:00:00 2001
From: Mauro Ezequiel Moltrasio <mmoltras@redhat.com>
Date: Tue, 2 Jun 2026 10:56:29 +0200
Subject: [PATCH 2/2] Remove unneeded cargo-llvm-cov installation

---
 .github/workflows/ci.yml | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6eda3fb6..e39b453b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -85,11 +85,6 @@ jobs:
           target/
         key: ${{ runner.os }}-${{ runner.arch }}-cargo-coverage-${{ hashFiles('**/Cargo.lock') }}
 
-    - name: Install cargo-llvm-cov
-      run: |
-        rustup component add llvm-tools-preview
-        cargo install cargo-llvm-cov
-
     - name: Generate coverage
       run: make coverage