diff --git a/pkg/ddc/alluxio/operations/base_test.go b/pkg/ddc/alluxio/operations/base_test.go
index c0fbe591b69..c4e620a7881 100644
--- a/pkg/ddc/alluxio/operations/base_test.go
+++ b/pkg/ddc/alluxio/operations/base_test.go
@@ -218,6 +218,9 @@ func TestAlluxioFileUtils_LoadMetaData(t *testing.T) {
 	}
 }
 
+// TestAlluxioFileUtils_QueryMetaDataInfoIntoFile tests the QueryMetaDataInfoIntoFile method.
+// It uses gomonkey to mock the internal exec method, verifying that an error is returned when exec fails
+// and that no error occurs when exec succeeds. The test covers all defined KeyOfMetaDataFile types.
 func TestAlluxioFileUtils_QueryMetaDataInfoIntoFile(t *testing.T) {
 	ExecCommon := func(a AlluxioFileUtils, command []string, verbose bool) (stdout string, stderr string, err error) {
 		return "Alluxio cluster summary", "", nil