s3rm-rs 1.3.2

Fast Amazon S3 object deletion tool.
Documentation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
// Feature: s3rm-rs, Property 41: If-Match Conditional Deletion
// **Validates: Requirements 11.1, 11.2**
//
// Feature: s3rm-rs, Property 42: If-Match Flag Propagation
// **Validates: Requirements 11.3**
//
// Feature: s3rm-rs, Property 43: Batch Conditional Deletion Handling
// **Validates: Requirements 11.4**

#[cfg(test)]
mod tests {
    use crate::config::args::parse_from_args;
    use crate::config::{Config, FilterConfig, ForceRetryConfig};
    use crate::types::{DeletionError, StoragePath};

    use proptest::prelude::*;

    /// Helper: create a minimal Config with the given `if_match` flag.
    fn make_config(if_match: bool) -> Config {
        Config {
            target: StoragePath::S3 {
                bucket: "test-bucket".to_string(),
                prefix: "prefix/".to_string(),
            },
            show_no_progress: false,
            target_client_config: None,
            force_retry_config: ForceRetryConfig {
                force_retry_count: 0,
                force_retry_interval_milliseconds: 0,
            },
            tracing_config: None,
            worker_size: 4,
            warn_as_error: false,
            dry_run: false,
            rate_limit_objects: None,
            max_parallel_listings: 1,
            object_listing_queue_size: 1000,
            max_parallel_listing_max_depth: 0,
            allow_parallel_listings_in_express_one_zone: false,
            filter_config: FilterConfig::default(),
            max_keys: 1000,
            auto_complete_shell: None,
            event_callback_lua_script: None,
            filter_callback_lua_script: None,
            allow_lua_os_library: false,
            allow_lua_unsafe_vm: false,
            lua_vm_memory_limit: 0,
            lua_callback_timeout_milliseconds: 0,
            if_match,
            max_delete: None,
            filter_manager: crate::callback::filter_manager::FilterManager::new(),
            event_manager: crate::callback::event_manager::EventManager::new(),
            batch_size: 1000,
            delete_all_versions: false,
            force: false,
            test_user_defined_callback: false,
        }
    }

    // -----------------------------------------------------------------------
    // Feature: s3rm-rs, Property 41: If-Match Conditional Deletion
    // -----------------------------------------------------------------------

    proptest! {
        #![proptest_config(ProptestConfig::with_cases(100))]

        /// Feature: s3rm-rs, Property 41: If-Match Conditional Deletion
        /// **Validates: Requirements 11.1, 11.2**
        ///
        /// When if_match is enabled, SingleDeleter must pass the object's ETag
        /// to the storage layer. When disabled, no ETag is passed regardless
        /// of whether the object has one.
        #[test]
        fn prop_single_deleter_if_match_etag_inclusion(
            if_match_enabled in proptest::bool::ANY,
            has_etag in proptest::bool::ANY,
            etag_value in "[a-f0-9]{32}",
        ) {
            use aws_sdk_s3::primitives::DateTime;
            use aws_sdk_s3::types::Object;
            use crate::types::S3Object;
            use crate::deleter::single::SingleDeleter;
            use crate::deleter::Deleter;

            let config = make_config(if_match_enabled);

            // Build object with or without ETag
            let mut builder = Object::builder()
                .key("test/key")
                .size(100)
                .last_modified(DateTime::from_secs(1000));
            if has_etag {
                builder = builder.e_tag(format!("\"{}\"", etag_value));
            }
            let obj = S3Object::NotVersioning(builder.build());

            let rt = tokio::runtime::Builder::new_current_thread()
                .enable_all()
                .build()
                .unwrap();

            rt.block_on(async {
                use std::sync::{Arc, Mutex};
                use crate::types::DeletionStatistics;

                // Create a recording mock to capture the if_match argument
                let (stats_sender, _stats_rx) = async_channel::unbounded::<DeletionStatistics>();
                let recorded_if_match: Arc<Mutex<Option<Option<String>>>> =
                    Arc::new(Mutex::new(None));
                let recorded_clone = recorded_if_match.clone();

                // We use the real SingleDeleter + a mock storage that records calls
                let mock = RecordingMockStorage {
                    stats_sender: stats_sender.clone(),
                    recorded_if_match: recorded_clone,
                };
                let boxed: Box<dyn crate::storage::StorageTrait + Send + Sync> = Box::new(mock);
                let deleter = SingleDeleter::new(boxed);

                let result = deleter.delete(&[obj], &config).await;
                prop_assert!(result.is_ok(), "Deletion should succeed");

                let captured = recorded_if_match.lock().unwrap();
                let captured_if_match = captured.as_ref().expect("delete_object should have been called");

                if if_match_enabled && has_etag {
                    // Must pass the ETag
                    prop_assert!(
                        captured_if_match.is_some(),
                        "When if_match=true and object has ETag, If-Match must be set"
                    );
                    let expected_etag = format!("\"{}\"", etag_value);
                    prop_assert_eq!(
                        captured_if_match.as_deref().unwrap(),
                        expected_etag.as_str(),
                        "ETag value must match the object's ETag"
                    );
                } else {
                    // Must NOT pass the ETag
                    prop_assert!(
                        captured_if_match.is_none(),
                        "When if_match=false or object has no ETag, If-Match must be None"
                    );
                }

                Ok(())
            })?;
        }

    }

    /// Feature: s3rm-rs, Property 41: If-Match Conditional Deletion (PreconditionFailed is non-retryable)
    /// **Validates: Requirements 11.2**
    ///
    /// PreconditionFailed errors (ETag mismatch) are never retryable — the
    /// object should be skipped rather than retried.
    #[test]
    fn precondition_failed_is_not_retryable() {
        assert!(
            !DeletionError::PreconditionFailed.is_retryable(),
            "PreconditionFailed must not be retryable — object should be skipped"
        );
    }

    // -----------------------------------------------------------------------
    // Feature: s3rm-rs, Property 42: If-Match Flag Propagation
    // -----------------------------------------------------------------------

    proptest! {
        #![proptest_config(ProptestConfig::with_cases(100))]

        /// Feature: s3rm-rs, Property 42: If-Match Flag Propagation
        /// **Validates: Requirements 11.3**
        ///
        /// The --if-match CLI flag is a boolean toggle. When present, Config.if_match
        /// is true; when absent, it is false. The flag correctly propagates through
        /// parse_from_args -> Config::try_from.
        #[test]
        fn prop_if_match_flag_parsing(include_flag in proptest::bool::ANY) {
            let _ = tracing_subscriber::fmt()
                .with_env_filter("dummy=trace")
                .try_init();

            let mut args = vec!["s3rm".to_string(), "s3://bucket/prefix/".to_string()];
            if include_flag {
                args.push("--if-match".to_string());
            }

            let args_ref: Vec<&str> = args.iter().map(|s| s.as_str()).collect();
            let parsed = parse_from_args(args_ref).unwrap();
            let config = Config::try_from(parsed).unwrap();

            prop_assert_eq!(
                config.if_match, include_flag,
                "Config.if_match must match whether --if-match flag was provided"
            );
        }

        /// Feature: s3rm-rs, Property 42: If-Match Flag Propagation (default)
        /// **Validates: Requirements 11.3**
        ///
        /// When --if-match is omitted, Config.if_match defaults to false
        /// for any valid bucket name.
        #[test]
        fn prop_if_match_default_is_false(
            bucket in "[a-z][a-z0-9-]{2,10}",
        ) {
            let _ = tracing_subscriber::fmt()
                .with_env_filter("dummy=trace")
                .try_init();

            let target = format!("s3://{}/", bucket);
            let args = vec!["s3rm", target.as_str()];
            let parsed = parse_from_args(args).unwrap();
            let config = Config::try_from(parsed).unwrap();
            prop_assert!(!config.if_match, "Default if_match must be false when flag is absent");
        }
    }

    // -----------------------------------------------------------------------
    // Feature: s3rm-rs, Property 43: Batch Conditional Deletion Handling
    // -----------------------------------------------------------------------

    proptest! {
        #![proptest_config(ProptestConfig::with_cases(50))]

        /// Feature: s3rm-rs, Property 43: Batch Conditional Deletion Handling
        /// **Validates: Requirements 11.4**
        ///
        /// When if_match is enabled, BatchDeleter must include per-object ETags
        /// in the ObjectIdentifier list sent to DeleteObjects API. When disabled,
        /// no ETags are included even if objects have them.
        #[test]
        fn prop_batch_deleter_if_match_per_object_etags(
            if_match_enabled in proptest::bool::ANY,
            n_objects in 1usize..10,
            etag_base in "[a-f0-9]{8}",
        ) {
            use aws_sdk_s3::primitives::DateTime;
            use aws_sdk_s3::types::{ObjectVersion, ObjectVersionStorageClass};
            use crate::types::S3Object;
            use crate::deleter::batch::BatchDeleter;
            use crate::deleter::Deleter;

            let config = make_config(if_match_enabled);

            // Create n objects with unique ETags
            let objects: Vec<S3Object> = (0..n_objects)
                .map(|i| {
                    S3Object::Versioning(
                        ObjectVersion::builder()
                            .key(format!("key/{}", i))
                            .version_id(format!("v{}", i))
                            .size(100)
                            .is_latest(true)
                            .storage_class(ObjectVersionStorageClass::Standard)
                            .last_modified(DateTime::from_secs(1000))
                            .e_tag(format!("\"{}{}\"", etag_base, i))
                            .build(),
                    )
                })
                .collect();

            let rt = tokio::runtime::Builder::new_current_thread()
                .enable_all()
                .build()
                .unwrap();

            rt.block_on(async {
                use std::sync::{Arc, Mutex};
                use aws_sdk_s3::types::ObjectIdentifier;
                use crate::types::DeletionStatistics;

                let (stats_sender, _stats_rx) = async_channel::unbounded::<DeletionStatistics>();
                let recorded_identifiers: Arc<Mutex<Vec<Vec<ObjectIdentifier>>>> =
                    Arc::new(Mutex::new(Vec::new()));
                let recorded_clone = recorded_identifiers.clone();

                let mock = BatchRecordingMockStorage {
                    stats_sender: stats_sender.clone(),
                    recorded_identifiers: recorded_clone,
                };
                let boxed: Box<dyn crate::storage::StorageTrait + Send + Sync> = Box::new(mock);
                let deleter = BatchDeleter::new(boxed);

                let result = deleter.delete(&objects, &config).await;
                prop_assert!(result.is_ok(), "Batch deletion should succeed");

                let batches = recorded_identifiers.lock().unwrap();
                prop_assert!(!batches.is_empty(), "At least one batch should be sent");

                // Collect all identifiers across batches
                let all_idents: Vec<&ObjectIdentifier> =
                    batches.iter().flat_map(|b| b.iter()).collect();
                prop_assert_eq!(all_idents.len(), n_objects, "All objects should be in batches");

                for (i, ident) in all_idents.iter().enumerate() {
                    let expected_key = format!("key/{}", i);
                    prop_assert_eq!(ident.key(), expected_key.as_str());

                    if if_match_enabled {
                        let expected_etag = format!("\"{}{}\"", etag_base, i);
                        prop_assert_eq!(
                            ident.e_tag(),
                            Some(expected_etag.as_str()),
                            "When if_match=true, ETag must be included for object {}",
                            i
                        );
                    } else {
                        prop_assert_eq!(
                            ident.e_tag(),
                            None,
                            "When if_match=false, ETag must be None for object {}",
                            i
                        );
                    }
                }

                Ok(())
            })?;
        }

        /// Feature: s3rm-rs, Property 43: Batch Conditional Deletion Handling (batch size respected)
        /// **Validates: Requirements 11.4**
        ///
        /// When if_match is enabled and the batch contains more objects than
        /// the configured batch_size, objects are split into multiple batches
        /// and each includes per-object ETags.
        #[test]
        fn prop_batch_if_match_respects_batch_size(
            batch_size in 2u16..10,
            extra_objects in 1usize..8,
        ) {
            use aws_sdk_s3::primitives::DateTime;
            use aws_sdk_s3::types::{ObjectVersion, ObjectVersionStorageClass};
            use crate::types::S3Object;
            use crate::deleter::batch::BatchDeleter;
            use crate::deleter::Deleter;

            let mut config = make_config(true); // if_match enabled
            config.batch_size = batch_size;

            let n_objects = batch_size as usize + extra_objects;
            let objects: Vec<S3Object> = (0..n_objects)
                .map(|i| {
                    S3Object::Versioning(
                        ObjectVersion::builder()
                            .key(format!("key/{}", i))
                            .version_id(format!("v{}", i))
                            .size(50)
                            .is_latest(true)
                            .storage_class(ObjectVersionStorageClass::Standard)
                            .last_modified(DateTime::from_secs(2000))
                            .e_tag(format!("\"etag{}\"", i))
                            .build(),
                    )
                })
                .collect();

            let rt = tokio::runtime::Builder::new_current_thread()
                .enable_all()
                .build()
                .unwrap();

            rt.block_on(async {
                use std::sync::{Arc, Mutex};
                use aws_sdk_s3::types::ObjectIdentifier;
                use crate::types::DeletionStatistics;

                let (stats_sender, _stats_rx) = async_channel::unbounded::<DeletionStatistics>();
                let recorded_identifiers: Arc<Mutex<Vec<Vec<ObjectIdentifier>>>> =
                    Arc::new(Mutex::new(Vec::new()));
                let recorded_clone = recorded_identifiers.clone();

                let mock = BatchRecordingMockStorage {
                    stats_sender: stats_sender.clone(),
                    recorded_identifiers: recorded_clone,
                };
                let boxed: Box<dyn crate::storage::StorageTrait + Send + Sync> = Box::new(mock);
                let deleter = BatchDeleter::new(boxed);

                let result = deleter.delete(&objects, &config).await;
                prop_assert!(result.is_ok(), "Batch deletion should succeed");

                let batches = recorded_identifiers.lock().unwrap();
                let expected_batches = n_objects.div_ceil(batch_size as usize);
                prop_assert_eq!(
                    batches.len(),
                    expected_batches,
                    "Objects should be split into correct number of batches"
                );

                // Each batch should be at most batch_size
                for batch in batches.iter() {
                    prop_assert!(
                        batch.len() <= batch_size as usize,
                        "Batch size {} exceeds configured max {}",
                        batch.len(),
                        batch_size
                    );
                }

                // All objects across batches should have ETags (if_match=true)
                let all_idents: Vec<&ObjectIdentifier> =
                    batches.iter().flat_map(|b| b.iter()).collect();
                prop_assert_eq!(all_idents.len(), n_objects);
                for ident in &all_idents {
                    prop_assert!(
                        ident.e_tag().is_some(),
                        "Every identifier must include ETag when if_match=true"
                    );
                }

                Ok(())
            })?;
        }
    }

    // -----------------------------------------------------------------------
    // Mock storage implementations for property tests
    // -----------------------------------------------------------------------

    use async_channel::Sender;
    use async_trait::async_trait;
    use std::sync::{Arc, Mutex};

    use aws_sdk_s3::operation::delete_object::DeleteObjectOutput;
    use aws_sdk_s3::operation::delete_objects::DeleteObjectsOutput;
    use aws_sdk_s3::operation::get_object_tagging::GetObjectTaggingOutput;
    use aws_sdk_s3::operation::head_object::HeadObjectOutput;
    use aws_sdk_s3::types::{DeletedObject, ObjectIdentifier};

    use crate::storage::StorageTrait;
    use crate::types::{DeletionStatistics, S3Object};

    /// Mock storage that records the `if_match` argument passed to `delete_object`.
    #[derive(Clone)]
    struct RecordingMockStorage {
        stats_sender: Sender<DeletionStatistics>,
        recorded_if_match: Arc<Mutex<Option<Option<String>>>>,
    }

    #[async_trait]
    impl StorageTrait for RecordingMockStorage {
        fn is_express_onezone_storage(&self) -> bool {
            false
        }
        async fn list_objects(
            &self,
            _sender: &Sender<S3Object>,
            _max_keys: i32,
        ) -> anyhow::Result<()> {
            Ok(())
        }
        async fn list_object_versions(
            &self,
            _sender: &Sender<S3Object>,
            _max_keys: i32,
        ) -> anyhow::Result<()> {
            Ok(())
        }
        async fn head_object(
            &self,
            _key: &str,
            _version_id: Option<String>,
        ) -> anyhow::Result<HeadObjectOutput> {
            Ok(HeadObjectOutput::builder().build())
        }
        async fn get_object_tagging(
            &self,
            _key: &str,
            _version_id: Option<String>,
        ) -> anyhow::Result<GetObjectTaggingOutput> {
            Ok(GetObjectTaggingOutput::builder()
                .set_tag_set(Some(vec![]))
                .build()
                .unwrap())
        }
        async fn delete_object(
            &self,
            _key: &str,
            _version_id: Option<String>,
            if_match: Option<String>,
        ) -> anyhow::Result<DeleteObjectOutput> {
            *self.recorded_if_match.lock().unwrap() = Some(if_match);
            Ok(DeleteObjectOutput::builder().build())
        }
        async fn delete_objects(
            &self,
            objects: Vec<ObjectIdentifier>,
        ) -> anyhow::Result<DeleteObjectsOutput> {
            let mut builder = DeleteObjectsOutput::builder();
            for ident in &objects {
                builder = builder.deleted(DeletedObject::builder().key(ident.key()).build());
            }
            Ok(builder.build())
        }
        async fn is_versioning_enabled(&self) -> anyhow::Result<bool> {
            Ok(false)
        }
        fn get_client(&self) -> Option<Arc<aws_sdk_s3::Client>> {
            None
        }
        fn get_stats_sender(&self) -> Sender<DeletionStatistics> {
            self.stats_sender.clone()
        }
        async fn send_stats(&self, stats: DeletionStatistics) {
            let _ = self.stats_sender.send(stats).await;
        }
        fn set_warning(&self) {}
    }

    /// Mock storage that records the ObjectIdentifier lists passed to `delete_objects`.
    #[derive(Clone)]
    struct BatchRecordingMockStorage {
        stats_sender: Sender<DeletionStatistics>,
        recorded_identifiers: Arc<Mutex<Vec<Vec<ObjectIdentifier>>>>,
    }

    #[async_trait]
    impl StorageTrait for BatchRecordingMockStorage {
        fn is_express_onezone_storage(&self) -> bool {
            false
        }
        async fn list_objects(
            &self,
            _sender: &Sender<S3Object>,
            _max_keys: i32,
        ) -> anyhow::Result<()> {
            Ok(())
        }
        async fn list_object_versions(
            &self,
            _sender: &Sender<S3Object>,
            _max_keys: i32,
        ) -> anyhow::Result<()> {
            Ok(())
        }
        async fn head_object(
            &self,
            _key: &str,
            _version_id: Option<String>,
        ) -> anyhow::Result<HeadObjectOutput> {
            Ok(HeadObjectOutput::builder().build())
        }
        async fn get_object_tagging(
            &self,
            _key: &str,
            _version_id: Option<String>,
        ) -> anyhow::Result<GetObjectTaggingOutput> {
            Ok(GetObjectTaggingOutput::builder()
                .set_tag_set(Some(vec![]))
                .build()
                .unwrap())
        }
        async fn delete_object(
            &self,
            _key: &str,
            _version_id: Option<String>,
            _if_match: Option<String>,
        ) -> anyhow::Result<DeleteObjectOutput> {
            Ok(DeleteObjectOutput::builder().build())
        }
        async fn delete_objects(
            &self,
            objects: Vec<ObjectIdentifier>,
        ) -> anyhow::Result<DeleteObjectsOutput> {
            self.recorded_identifiers
                .lock()
                .unwrap()
                .push(objects.clone());
            let mut builder = DeleteObjectsOutput::builder();
            for ident in &objects {
                builder = builder.deleted(DeletedObject::builder().key(ident.key()).build());
            }
            Ok(builder.build())
        }
        async fn is_versioning_enabled(&self) -> anyhow::Result<bool> {
            Ok(false)
        }
        fn get_client(&self) -> Option<Arc<aws_sdk_s3::Client>> {
            None
        }
        fn get_stats_sender(&self) -> Sender<DeletionStatistics> {
            self.stats_sender.clone()
        }
        async fn send_stats(&self, stats: DeletionStatistics) {
            let _ = self.stats_sender.send(stats).await;
        }
        fn set_warning(&self) {}
    }

    // -----------------------------------------------------------------------
    // RecordingMockStorage method verification tests
    // -----------------------------------------------------------------------

    fn make_recording_mock() -> (
        RecordingMockStorage,
        async_channel::Receiver<DeletionStatistics>,
    ) {
        let (stats_sender, stats_receiver) = async_channel::unbounded();
        let mock = RecordingMockStorage {
            stats_sender,
            recorded_if_match: Arc::new(Mutex::new(None)),
        };
        (mock, stats_receiver)
    }

    #[test]
    fn recording_mock_is_express_onezone_returns_false() {
        let (mock, _) = make_recording_mock();
        assert!(!mock.is_express_onezone_storage());
    }

    #[tokio::test]
    async fn recording_mock_list_objects_returns_ok() {
        let (mock, _) = make_recording_mock();
        let (sender, _receiver) = async_channel::bounded::<S3Object>(10);
        assert!(mock.list_objects(&sender, 1000).await.is_ok());
    }

    #[tokio::test]
    async fn recording_mock_list_object_versions_returns_ok() {
        let (mock, _) = make_recording_mock();
        let (sender, _receiver) = async_channel::bounded::<S3Object>(10);
        assert!(mock.list_object_versions(&sender, 1000).await.is_ok());
    }

    #[tokio::test]
    async fn recording_mock_head_object_returns_ok() {
        let (mock, _) = make_recording_mock();
        assert!(mock.head_object("key", None).await.is_ok());
    }

    #[tokio::test]
    async fn recording_mock_get_object_tagging_returns_ok() {
        let (mock, _) = make_recording_mock();
        let result = mock.get_object_tagging("key", None).await;
        assert!(result.is_ok());
        assert!(result.unwrap().tag_set().is_empty());
    }

    #[tokio::test]
    async fn recording_mock_delete_object_records_if_match() {
        let (mock, _) = make_recording_mock();
        let result = mock
            .delete_object("key", None, Some("etag-123".to_string()))
            .await;
        assert!(result.is_ok());
        let recorded = mock.recorded_if_match.lock().unwrap();
        assert_eq!(*recorded, Some(Some("etag-123".to_string())));
    }

    #[tokio::test]
    async fn recording_mock_delete_object_records_none_if_match() {
        let (mock, _) = make_recording_mock();
        let result = mock.delete_object("key", None, None).await;
        assert!(result.is_ok());
        let recorded = mock.recorded_if_match.lock().unwrap();
        assert_eq!(*recorded, Some(None));
    }

    #[tokio::test]
    async fn recording_mock_delete_objects_returns_deleted_keys() {
        let (mock, _) = make_recording_mock();
        let idents = vec![
            ObjectIdentifier::builder().key("a.txt").build().unwrap(),
            ObjectIdentifier::builder().key("b.txt").build().unwrap(),
        ];
        let result = mock.delete_objects(idents).await;
        assert!(result.is_ok());
        let output = result.unwrap();
        let deleted: Vec<&str> = output.deleted().iter().filter_map(|d| d.key()).collect();
        assert_eq!(deleted, vec!["a.txt", "b.txt"]);
    }

    #[tokio::test]
    async fn recording_mock_is_versioning_enabled_returns_false() {
        let (mock, _) = make_recording_mock();
        assert!(!mock.is_versioning_enabled().await.unwrap());
    }

    #[test]
    fn recording_mock_get_client_returns_none() {
        let (mock, _) = make_recording_mock();
        assert!(mock.get_client().is_none());
    }

    #[tokio::test]
    async fn recording_mock_get_stats_sender_works() {
        let (mock, stats_receiver) = make_recording_mock();
        let sender = mock.get_stats_sender();
        sender
            .send(DeletionStatistics::DeleteBytes(42))
            .await
            .unwrap();
        let received = stats_receiver.recv().await.unwrap();
        assert!(matches!(received, DeletionStatistics::DeleteBytes(42)));
    }

    #[tokio::test]
    async fn recording_mock_send_stats_delivers_stat() {
        let (mock, stats_receiver) = make_recording_mock();
        mock.send_stats(DeletionStatistics::DeleteComplete {
            key: "k".to_string(),
        })
        .await;
        let received = stats_receiver.recv().await.unwrap();
        assert!(matches!(
            received,
            DeletionStatistics::DeleteComplete { .. }
        ));
    }

    #[test]
    fn recording_mock_set_warning_is_callable() {
        let (mock, _) = make_recording_mock();
        mock.set_warning(); // no-op, just verify no panic
    }

    // -----------------------------------------------------------------------
    // BatchRecordingMockStorage method verification tests
    // -----------------------------------------------------------------------

    fn make_batch_recording_mock() -> (
        BatchRecordingMockStorage,
        async_channel::Receiver<DeletionStatistics>,
    ) {
        let (stats_sender, stats_receiver) = async_channel::unbounded();
        let mock = BatchRecordingMockStorage {
            stats_sender,
            recorded_identifiers: Arc::new(Mutex::new(Vec::new())),
        };
        (mock, stats_receiver)
    }

    #[test]
    fn batch_recording_mock_is_express_onezone_returns_false() {
        let (mock, _) = make_batch_recording_mock();
        assert!(!mock.is_express_onezone_storage());
    }

    #[tokio::test]
    async fn batch_recording_mock_list_objects_returns_ok() {
        let (mock, _) = make_batch_recording_mock();
        let (sender, _receiver) = async_channel::bounded::<S3Object>(10);
        assert!(mock.list_objects(&sender, 1000).await.is_ok());
    }

    #[tokio::test]
    async fn batch_recording_mock_list_object_versions_returns_ok() {
        let (mock, _) = make_batch_recording_mock();
        let (sender, _receiver) = async_channel::bounded::<S3Object>(10);
        assert!(mock.list_object_versions(&sender, 1000).await.is_ok());
    }

    #[tokio::test]
    async fn batch_recording_mock_head_object_returns_ok() {
        let (mock, _) = make_batch_recording_mock();
        assert!(mock.head_object("key", None).await.is_ok());
    }

    #[tokio::test]
    async fn batch_recording_mock_get_object_tagging_returns_ok() {
        let (mock, _) = make_batch_recording_mock();
        let result = mock.get_object_tagging("key", None).await;
        assert!(result.is_ok());
        assert!(result.unwrap().tag_set().is_empty());
    }

    #[tokio::test]
    async fn batch_recording_mock_delete_object_returns_ok() {
        let (mock, _) = make_batch_recording_mock();
        assert!(mock.delete_object("key", None, None).await.is_ok());
    }

    #[tokio::test]
    async fn batch_recording_mock_delete_objects_records_and_returns() {
        let (mock, _) = make_batch_recording_mock();
        let idents = vec![
            ObjectIdentifier::builder().key("x.txt").build().unwrap(),
            ObjectIdentifier::builder().key("y.txt").build().unwrap(),
            ObjectIdentifier::builder().key("z.txt").build().unwrap(),
        ];
        let result = mock.delete_objects(idents).await;
        assert!(result.is_ok());

        // Verify recording
        let recorded = mock.recorded_identifiers.lock().unwrap();
        assert_eq!(recorded.len(), 1);
        let keys: Vec<&str> = recorded[0].iter().map(|i| i.key()).collect();
        assert_eq!(keys, vec!["x.txt", "y.txt", "z.txt"]);

        // Verify output contains deleted keys
        let output = result.unwrap();
        let deleted: Vec<&str> = output.deleted().iter().filter_map(|d| d.key()).collect();
        assert_eq!(deleted, vec!["x.txt", "y.txt", "z.txt"]);
    }

    #[tokio::test]
    async fn batch_recording_mock_is_versioning_enabled_returns_false() {
        let (mock, _) = make_batch_recording_mock();
        assert!(!mock.is_versioning_enabled().await.unwrap());
    }

    #[test]
    fn batch_recording_mock_get_client_returns_none() {
        let (mock, _) = make_batch_recording_mock();
        assert!(mock.get_client().is_none());
    }

    #[tokio::test]
    async fn batch_recording_mock_get_stats_sender_works() {
        let (mock, stats_receiver) = make_batch_recording_mock();
        let sender = mock.get_stats_sender();
        sender
            .send(DeletionStatistics::DeleteBytes(99))
            .await
            .unwrap();
        let received = stats_receiver.recv().await.unwrap();
        assert!(matches!(received, DeletionStatistics::DeleteBytes(99)));
    }

    #[tokio::test]
    async fn batch_recording_mock_send_stats_delivers_stat() {
        let (mock, stats_receiver) = make_batch_recording_mock();
        mock.send_stats(DeletionStatistics::DeleteComplete {
            key: "k".to_string(),
        })
        .await;
        let received = stats_receiver.recv().await.unwrap();
        assert!(matches!(
            received,
            DeletionStatistics::DeleteComplete { .. }
        ));
    }

    #[test]
    fn batch_recording_mock_set_warning_is_callable() {
        let (mock, _) = make_batch_recording_mock();
        mock.set_warning(); // no-op, just verify no panic
    }
}