diff --git a/pkg/ddc/alluxio/operations/base_test.go b/pkg/ddc/alluxio/operations/base_test.go
index 28382e9f271..a6621527628 100644
--- a/pkg/ddc/alluxio/operations/base_test.go
+++ b/pkg/ddc/alluxio/operations/base_test.go
@@ -466,6 +466,18 @@ func TestAlluxioFIleUtils_Du(t *testing.T) {
 	}
 }
 
+// TestAlluxioFileUtils_Count tests the Count method of AlluxioFileUtils.
+// This function verifies the Count method's ability to parse the output of the alluxio fs count command
+// and handle various error scenarios such as execution errors, negative results, too many lines,
+// data number mismatches, and parse errors.
+//
+// Test cases:
+// - EXEC_ERR: Tests handling of command execution errors.
+// - NEGATIVE_RES: Tests handling of negative result values.
+// - TOO_MANY_LINES: Tests handling of output with too many lines.
+// - DATA_NUM: Tests handling of mismatched data numbers.
+// - PARSE_ERR: Tests handling of parse errors.
+// - FINE: Tests successful parsing of count output.
 func TestAlluxioFileUtils_Count(t *testing.T) {
 	out1, out2, out3 := 111, 222, 333
 	mockExec := func(ctx context.Context, p1, p2, p3 string, p4 []string) (stdout string, stderr string, e error) {