diff --git a/pkg/ddc/alluxio/hcfs_test.go b/pkg/ddc/alluxio/hcfs_test.go
index dba67846be6..69b605c4dc8 100644
--- a/pkg/ddc/alluxio/hcfs_test.go
+++ b/pkg/ddc/alluxio/hcfs_test.go
@@ -35,18 +35,32 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/client"
 )
 
+// newAlluxioEngineHCFS creates and returns a new AlluxioEngine instance.
+// It initializes the engine using the provided client, name, and namespace, 
+// and builds the Alluxio runtime information.
+// Parameters:
+//   - client: The client used to interact with the Kubernetes API.
+//   - name: The name of the Alluxio engine.
+//   - namespace: The namespace of the Alluxio engine.
+// Returns:
+//   - Returns a configured AlluxioEngine instance.
 func newAlluxioEngineHCFS(client client.Client, name string, namespace string) *AlluxioEngine {
+	// Create a new AlluxioRuntime instance
 	runTime := &v1alpha1.AlluxioRuntime{}
+	// Build the Alluxio runtime information using the name and namespace
 	runTimeInfo, _ := base.BuildRuntimeInfo(name, namespace, "alluxio")
+
+	// Create and return a new AlluxioEngine instance
 	engine := &AlluxioEngine{
-		runtime:     runTime,
-		name:        name,
-		namespace:   namespace,
-		Client:      client,
-		runtimeInfo: runTimeInfo,
-		Log:         fake.NullLogger(),
-	}
-	return engine
+		runtime:     runTime,              // Initialize the runtime object
+		name:        name,                 // Set the engine name
+		namespace:   namespace,            // Set the engine namespace
+		Client:      client,               // Set the Kubernetes API client
+		runtimeInfo: runTimeInfo,          // Set the runtime information
+		Log:         fake.NullLogger(),    // Set the logger (fake logger)
+	}
+
+	return engine // Return the configured AlluxioEngine instance
 }
 
 func TestGetHCFSStatus(t *testing.T) {