Which function do you want to add comments to?
TestJuiceFSEngine_genDataUrl_PVC in /pkg/ddc/juicefs/data_migrate_test.go
What comments do you want to add?
// TestJuiceFSEngine_genDataUrl_PVc is a unit test for the genDataUrl method of the JuiceFSEngine struct.
// Test objective: Ensure that the genDataUrl method correctly parses pvc (PersistentVolumeClaim) type ExternalStageURI, and generates the correct data migration path and configuration information.