# Blackbox Test Scenarios

## BT-DSF: Dataset Formation

### BT-DSF-01: 70/20/10 split ratio
- **Input**: 100 images + labels in data/ dir
- **Action**: Run `form_dataset()` with patched paths
- **Expected**: train: 70 images+labels, valid: 20, test: 10
- **Traces**: AC: Dataset split 70/20/10

### BT-DSF-02: Split directories structure
- **Input**: 100 images + labels
- **Action**: Run `form_dataset()`
- **Expected**: Created: `train/images/`, `train/labels/`, `valid/images/`, `valid/labels/`, `test/images/`, `test/labels/`
- **Traces**: AC: YOLO dataset directory structure

### BT-DSF-03: Total files preserved across splits
- **Input**: 100 valid images + labels
- **Action**: Run `form_dataset()`
- **Expected**: `count(train) + count(valid) + count(test) == 100` (no data loss)
- **Traces**: AC: Dataset integrity

### BT-DSF-04: Corrupted labels moved to corrupted directory
- **Input**: 95 valid + 5 corrupted labels (coords > 1.0)
- **Action**: Run `form_dataset()` with patched paths
- **Expected**: 5 images+labels in `data-corrupted/`; 95 across train/valid/test splits
- **Traces**: AC: Corrupted labels filtered

---

## BT-LBL: Label Validation

### BT-LBL-01: Valid label accepted
- **Input**: Label file: `0 0.5 0.5 0.1 0.1`
- **Action**: Call `check_label(path)`
- **Expected**: Returns `True`
- **Traces**: AC: Valid YOLO label format

### BT-LBL-02: Label with x > 1.0 rejected
- **Input**: Label file: `0 1.5 0.5 0.1 0.1`
- **Action**: Call `check_label(path)`
- **Expected**: Returns `False`
- **Traces**: AC: Corrupted labels detected

### BT-LBL-03: Label with height > 1.0 rejected
- **Input**: Label file: `0 0.5 0.5 0.1 1.2`
- **Action**: Call `check_label(path)`
- **Expected**: Returns `False`
- **Traces**: AC: Corrupted labels detected

### BT-LBL-04: Missing label file rejected
- **Input**: Non-existent file path
- **Action**: Call `check_label(path)`
- **Expected**: Returns `False`
- **Traces**: AC: Missing labels handled

### BT-LBL-05: Multi-line label with one corrupted line
- **Input**: Label file: `0 0.5 0.5 0.1 0.1\n3 0.5 0.5 0.1 1.5`
- **Action**: Call `check_label(path)`
- **Expected**: Returns `False` (any corrupted line fails the whole file)
- **Traces**: AC: Corrupted labels detected

---

## BT-ENC: Encryption

### BT-ENC-01: Encrypt-decrypt roundtrip (arbitrary data)
- **Input**: 1024 random bytes, key "test-key"
- **Action**: `decrypt_to(encrypt_to(data, key), key)`
- **Expected**: Output equals input bytes exactly
- **Traces**: AC: AES-256-CBC encryption

### BT-ENC-02: Encrypt-decrypt roundtrip (ONNX model)
- **Input**: `azaion.onnx` bytes, model encryption key
- **Action**: `decrypt_to(encrypt_to(model_bytes, key), key)`
- **Expected**: Output equals input bytes exactly
- **Traces**: AC: Model encryption

### BT-ENC-03: Empty input roundtrip
- **Input**: `b""`, key "test-key"
- **Action**: `decrypt_to(encrypt_to(b"", key), key)`
- **Expected**: Output equals `b""`
- **Traces**: AC: Edge case handling

### BT-ENC-04: Single byte roundtrip
- **Input**: `b"\x00"`, key "test-key"
- **Action**: `decrypt_to(encrypt_to(b"\x00", key), key)`
- **Expected**: Output equals `b"\x00"`
- **Traces**: AC: Edge case handling

### BT-ENC-05: Different keys produce different ciphertext
- **Input**: Same 1024 bytes, keys "key-a" and "key-b"
- **Action**: `encrypt_to(data, "key-a")` vs `encrypt_to(data, "key-b")`
- **Expected**: Ciphertexts differ
- **Traces**: AC: Key-dependent encryption

### BT-ENC-06: Wrong key fails decryption
- **Input**: Encrypted with "key-a", decrypt with "key-b"
- **Action**: `decrypt_to(encrypted, "key-b")`
- **Expected**: Output does NOT equal original input
- **Traces**: AC: Key-dependent encryption

---

## BT-SPL: Model Split Storage

### BT-SPL-01: Split respects size constraint
- **Input**: 10000 encrypted bytes
- **Action**: Split into small + big per `SMALL_SIZE_KB = 3` logic
- **Expected**: small ≤ max(3072 bytes, 20% of total); big = remainder
- **Traces**: AC: Model split ≤3KB or 20%

### BT-SPL-02: Reassembly produces original
- **Input**: 10000 encrypted bytes → split → reassemble
- **Action**: `small + big`
- **Expected**: Equals original encrypted bytes
- **Traces**: AC: Split model integrity

---

## BT-CLS: Annotation Class Loading

### BT-CLS-01: Load 17 base classes
- **Input**: `classes.json`
- **Action**: `AnnotationClass.read_json()`
- **Expected**: Dict with 17 unique class entries (base IDs)
- **Traces**: AC: 17 base classes

### BT-CLS-02: Weather mode expansion
- **Input**: `classes.json`
- **Action**: `AnnotationClass.read_json()`
- **Expected**: Same class at offset 0 (Norm), 20 (Wint), 40 (Night); e.g., ID 0, 20, 40 all represent ArmorVehicle
- **Traces**: AC: 3 weather modes

### BT-CLS-03: YAML generation produces 80 class names
- **Input**: `classes.json` + dataset path
- **Action**: `create_yaml()` with patched paths
- **Expected**: data.yaml contains `nc: 80`, 17 named classes + 63 `Class-N` placeholders
- **Traces**: AC: 80 total class slots

---

## BT-HSH: Hardware Hash

### BT-HSH-01: Deterministic output
- **Input**: "test-hardware-info"
- **Action**: `Security.get_hw_hash()` called twice
- **Expected**: Both calls return identical string
- **Traces**: AC: Hardware fingerprinting determinism

### BT-HSH-02: Different inputs produce different hashes
- **Input**: "hw-a" and "hw-b"
- **Action**: `Security.get_hw_hash()` on each
- **Expected**: Results differ
- **Traces**: AC: Hardware-bound uniqueness

### BT-HSH-03: Output is valid base64
- **Input**: "test-hardware-info"
- **Action**: `Security.get_hw_hash()`
- **Expected**: Matches regex `^[A-Za-z0-9+/]+=*$`
- **Traces**: AC: Hash format

---

## BT-INF: ONNX Inference

### BT-INF-01: Model loads successfully
- **Input**: `azaion.onnx` bytes
- **Action**: `OnnxEngine(model_bytes)`
- **Expected**: No exception; engine object created with valid input_shape and batch_size
- **Traces**: AC: ONNX inference capability

### BT-INF-02: Inference returns output
- **Input**: ONNX engine + 1 preprocessed image
- **Action**: `engine.run(input_blob)`
- **Expected**: Returns list of numpy arrays; first array has shape [batch, N, 6+]
- **Traces**: AC: ONNX inference produces results

### BT-INF-03: Postprocessing returns valid detections
- **Input**: ONNX engine output from real image
- **Action**: `Inference.postprocess()`
- **Expected**: Returns list of Annotation objects; each Detection has x,y,w,h ∈ [0,1], cls ∈ [0,79], confidence ∈ [0,1]
- **Traces**: AC: Detection format validity

---

## BT-NMS: Overlap Removal

### BT-NMS-01: Overlapping detections — keep higher confidence
- **Input**: 2 Detection objects at same position, confidence 0.9 and 0.5, IoU > 0.3
- **Action**: `remove_overlapping_detections()`
- **Expected**: 1 detection returned (confidence 0.9)
- **Traces**: AC: NMS IoU threshold 0.3

### BT-NMS-02: Non-overlapping detections — keep both
- **Input**: 2 Detection objects at distant positions, IoU < 0.3
- **Action**: `remove_overlapping_detections()`
- **Expected**: 2 detections returned
- **Traces**: AC: NMS preserves non-overlapping

### BT-NMS-03: Chain overlap resolution
- **Input**: 3 Detection objects: A overlaps B (IoU > 0.3), B overlaps C (IoU > 0.3), A doesn't overlap C
- **Action**: `remove_overlapping_detections()`
- **Expected**: ≤ 2 detections; highest confidence per overlapping pair kept
- **Traces**: AC: NMS handles chains

---

## BT-AQM: Annotation Queue Message Parsing

### BT-AQM-01: Parse Created annotation message
- **Input**: Msgpack bytes matching AnnotationMessage schema (status=Created, role=Validator)
- **Action**: Decode and construct AnnotationMessage
- **Expected**: All fields populated: name, detections, image bytes, status == "Created", role == "Validator"
- **Traces**: AC: Annotation message parsing

### BT-AQM-02: Parse Validated bulk message
- **Input**: Msgpack bytes with status=Validated, list of names
- **Action**: Decode and construct AnnotationBulkMessage
- **Expected**: Status == "Validated", names list matches input
- **Traces**: AC: Bulk validation parsing

### BT-AQM-03: Parse Deleted bulk message
- **Input**: Msgpack bytes with status=Deleted, list of names
- **Action**: Decode and construct AnnotationBulkMessage
- **Expected**: Status == "Deleted", names list matches input
- **Traces**: AC: Bulk deletion parsing

### BT-AQM-04: Malformed message raises exception
- **Input**: Invalid msgpack bytes
- **Action**: Attempt to decode
- **Expected**: Exception raised
- **Traces**: AC: Error handling for malformed messages