feat(languages): go test pipeline

.github/workflows/languages-go-test.yml

@@ -0,0 +1,52 @@
+name: Go Test
+
+on:
+  workflow_call:
+    inputs:
+      go-version-file:
+        description: "Path to go.mod for version resolution"
+        type: string
+        default: "go.mod"
+      run-race:
+        description: "Enable race detector"
+        type: boolean
+        default: true
+      timeout:
+        description: "Test timeout (go test -timeout)"
+        type: string
+        default: "20m"
+      coverage:
+        description: "Upload coverage report as artifact"
+        type: boolean
+        default: true
+
+jobs:
+  test:
+    name: go test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: ${{ inputs.go-version-file }}
+          cache: true
+
+      - name: Run tests
+        run: |
+          ARGS="-timeout ${{ inputs.timeout }}"
+          if [ "${{ inputs.run-race }}" = "true" ]; then
+            ARGS="$ARGS -race"
+          fi
+          if [ "${{ inputs.coverage }}" = "true" ]; then
+            ARGS="$ARGS -coverprofile=coverage.out -covermode=atomic"
+          fi
+          go test $ARGS ./...
+
+      - name: Upload coverage report
+        if: ${{ inputs.coverage }}
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-report
+          path: coverage.out
+          retention-days: 7