ci: enhance CI workflow with Go 1.24 and test reporting (#100)

Add Go 1.24 to the matrix to keep the CI up to date with the latest
Go version. Introduce a separate Lint job that runs gofmt and go vet
to improve code quality checks independently. Replace previous gofmt
and go vet steps in the main job with a dedicated lint job.

Modify the test job to install go-junit-report and generate JUnit XML
test reports from Go test JSON output. Upload these test results to
Codecov alongside coverage reports to improve test result visibility
and integration with CI tools. These changes enhance CI robustness,
code quality enforcement, and test reporting.

Author: SVilgelm

.github/workflows/code.yaml

@@ -18,6 +18,20 @@ concurrency:
 permissions: read-all
 
 jobs:
+  Lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4.2.2 # immutable action, safe to use the versions
+      - uses: actions/setup-go@v5.4.0 # immutable action, safe to use the versions
+        with:
+          go-version-file: go.mod
+      - name: gofmt
+        run: diff -u <(echo -n) <(gofmt -l . )
+      - name: show diff
+        if: ${{ failure() }}
+        run: git diff
+      - run: go vet ./...
+
   UnitTestJob:
     runs-on: ubuntu-latest
     strategy:
@@ -26,26 +40,28 @@ jobs:
           - "1.21"
           - "1.22"
           - "1.23"
+          - "1.24"
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4.2.2 # immutable action, safe to use the versions
       - name: Install Go
         uses: actions/setup-go@v5.4.0 # immutable action, safe to use the versions
         with:
           go-version: ${{ matrix.go }}
-      - name: gofmt
-        run: diff -u <(echo -n) <(gofmt -l . )
-      - name: show diff
-        if: ${{ failure() }}
-        run: git diff
-      - name: go vet
-        run: go vet ./...
-      - name: Run Unit Tests
-        run: go test -race -cover -coverprofile=coverage.out -covermode=atomic ./...
-      - name: Codecov
+      - run: go install github.com/jstemmer/go-junit-report/v2@latest
+      - run: go test -race -cover -coverprofile=coverage.out -covermode=atomic ./...
+      - run: go test -json 2>&1 | go-junit-report -parser gojson > junit.xml
+        if: always()
+      - name: Upload coverage reports to Codecov
+        if: ${{ !cancelled() }}
         uses: codecov/codecov-action@ad3126e916f78f00edff4ed0317cf185271ccc2d # v5.4.2
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+      - name: Upload test results to Codecov
+        if: ${{ !cancelled() }}
+        uses: codecov/test-results-action@f2dba722c67b86c6caa034178c6e4d35335f6706 # v1.1.0
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
   UnitTests:
     if: ${{ always() }}