chore(test): Enable code coverage measurement (#22)

.github/workflows/test.yaml

@@ -15,6 +15,7 @@ jobs:
     steps:
       - uses: extractions/setup-just@v2
       - uses: actions/checkout@v4
+      - uses: taiki-e/install-action@cargo-llvm-cov
       - uses: actions/cache@v4
         with:
           path: |
@@ -29,4 +30,9 @@ jobs:
         run: just build
 
       - name: Test
-        run: cargo test
+        run: just test-coverage
+
+      - name: Upload coverage reports to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}

.gitignore

@@ -8,3 +8,4 @@ build/
 /target
 node_modules/
 .venv/
+lcov.info

README.md

@@ -4,6 +4,7 @@ Publish and download (private) python packages using an OCI registry for storage
 [![Test](https://github.com/AllexVeldman/pyoci/actions/workflows/test.yaml/badge.svg)](https://github.com/AllexVeldman/pyoci/actions/workflows/test.yaml)
 [![Examples](https://github.com/AllexVeldman/pyoci/actions/workflows/examples.yaml/badge.svg)](https://github.com/AllexVeldman/pyoci/actions/workflows/examples.yaml)
 [![Deploy](https://github.com/AllexVeldman/pyoci/actions/workflows/deploy.yaml/badge.svg)](https://github.com/AllexVeldman/pyoci/actions/workflows/deploy.yaml)
+[![codecov](https://codecov.io/github/AllexVeldman/pyoci/graph/badge.svg?token=SXFCPX8M22)](https://codecov.io/github/AllexVeldman/pyoci)
 
 ## Introduction
 Most subscriptions with cloud providers include an [OCI](https://opencontainers.org/) (docker image) registry where private containers can be published and distributed from.
@@ -66,7 +67,7 @@ To prevent having to check-in [encrypted secrets](https://docs.renovatebot.com/g
 you can:
 1. Self-host renovate as a github workflow
 2. Set `package: read` permissions for the workflow
-3. Pass the `GITHUB_TOKEN` as an environment variable to Renovate 
+3. Pass the `GITHUB_TOKEN` as an environment variable to Renovate
 4. Add a hostRule for the Renovate runner to apply basic auth for pyoci using the environment variable
 5. In the [package settings](https://docs.github.com/en/packages/learn-github-packages/configuring-a-packages-access-control-and-visibility#ensuring-workflow-access-to-your-package) of the private package give the repository running renovate `read` access.
 

codecov.yml

@@ -0,0 +1,3 @@
+comment:
+  layout: "condensed_header, condensed_files, condensed_footer"
+  hide_project_coverage: true

justfile

@@ -14,6 +14,12 @@ build *args:
     cp ./src/js/cf_worker.js ./build/
     cd ./build && npx esbuild --external:./pyoci_bg.wasm --external:cloudflare:sockets --external:cloudflare:workers --format=esm --bundle ./cf_worker.js --outfile=cf_worker.mjs --minify
 
+# Run tests with coverage, requires cargo-llvm-cov. Add `--open` to open the report in the browser.
+[group("ci")]
+test-coverage *args:
+    cargo llvm-cov --lcov --output-path lcov.info
+    cargo llvm-cov report {{args}}
+
 # Recreate the OCI registry, clears it's package cache
 [group("setup")]
 refresh-registry: