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# Section 5: Verification

## Overview

This section is the final verification step for Sprint 5f. It depends on all three prior implementation sections (section-01-validator, section-02-node-ops-integration, section-03-mcp-wrapper) and section-04-prompt being complete. The purpose is to run the full test suite and confirm that all spatial validation tests pass and no regressions have been introduced.

This section does not introduce new code. It defines the verification procedure and the expected outcomes an implementer should observe.

## Prerequisites

All of the following must be complete before running verification:

- **section-01-validator**: `src/godotiq/tools/bridge/spatial_validator.py` exists with `validate_move()`, `validate_scale()`, and `_get_name_prefix()` implemented. Unit tests for the validator are in `tests/test_bridge/test_spatial_validator.py`.
- **section-02-node-ops-integration**: `src/godotiq/tools/bridge/node_ops.py` has been modified to accept an optional `scene_data: dict | None = None` parameter and perform spatial validation for operations with `validate: true`.
- **section-03-mcp-wrapper**: `src/godotiq/tools/bridge/__init__.py` has been updated so `godotiq_node_ops` accepts a `scene` parameter, resolves scene spatial data via session, and passes `scene_data` down to `_node_ops()`.
- **section-04-prompt**: `src/godotiq/prompts/godot_development.md` includes the "Spatial Validation" subsection.

## Test File

All tests live in a single file: `tests/test_bridge/test_spatial_validator.py`

This file must NOT modify or conflict with any existing test files. The existing test files to avoid touching include:

- `tests/test_bridge/test_tools.py`
- `tests/test_bridge/test_editor_screenshot.py`
- `tests/test_tools/test_spatial_audit.py`

## Verification Steps

### Step 1: Run the spatial validator tests in isolation

```bash
pytest tests/test_bridge/test_spatial_validator.py -v
```

**Expected outcome**: All tests pass. The expected test count is at least 27 tests, broken down as follows:

**validate_move tests (12 tests):**

| Test | Description | Expected Result |
|------|-------------|-----------------|
| Empty scene data | `{"nodes": []}`, any position | OK severity, valid=True |
| Invalid position | Position with fewer than 3 values, e.g. `[1]` | BLOCKED severity |
| Valid position far from walls | Position well away from any StaticBody3D or wall-named node | OK severity, valid=True |
| Too close to wall (StaticBody type) | Position < 0.2m from a node with type containing `StaticBody` | BLOCKED, message mentions the wall node name |
| Warning near wall | Position 0.2-0.5m from a wall node | WARNING severity |
| Self-node excluded | Target position identical to self node's position | OK (does not collide with itself) |
| Overlap with same-depth node | Position < 0.05m from another node at the same depth | BLOCKED, "overlap" appears in message |
| Overlap ignored for different depth | Position identical to a node at a different depth | OK (depth filtering prevents false positive) |
| Sibling outlier | Position 50m from Shelf_01, Shelf_02, Shelf_03 siblings | WARNING, "sibling" appears in message |
| Wall ignored if Y-diff > 3m | Wall at Y=0, target at Y=5 | OK (Y-axis sanity check skips this wall) |
| Wall identified by name | Node named "Wall_East" without StaticBody type | Treated as wall candidate |
| Wall identified by Floor/Ceiling/Ground name | Node with "Floor" or "Ceiling" or "Ground" in name | Treated as wall candidate |

**validate_scale tests (4 tests):**

| Test | Description | Expected Result |
|------|-------------|-----------------|
| Consistent scale | Scale matching siblings | OK severity |
| Outlier scale | Scale 40x smaller than siblings | WARNING severity |
| No siblings | Unique node name with no matching prefix | OK severity |
| Invalid scale | Scale with fewer than 3 values | BLOCKED severity |

**_get_name_prefix tests (5 tests):**

| Test | Description | Expected Result |
|------|-------------|-----------------|
| Numbered suffix | `"Shelf_01"` | `"Shelf_"` |
| Same prefix | `"Shelf_02"` | `"Shelf_"` (matches Shelf_01) |
| Short alpha suffix | `"PrinterSlot_P3"` | `"PrinterSlot_"` |
| Long alpha suffix | `"Wall_East"` | `""` (4-char suffix exceeds max 3) |
| No underscore | `"MainCamera"` | `""` |

**_extract_nodes tests (3 tests):**

| Test | Description | Expected Result |
|------|-------------|-----------------|
| Extracts nodes | Dict with `"nodes"` key | Returns the list of node dicts |
| Empty dict | `{}` | Returns empty list |
| Full field names | Nodes with name, type, position, scale | All fields accessible |

**node_ops integration tests (7 tests):**

| Test | Description | Expected Result |
|------|-------------|-----------------|
| No validate flag | Operations without `validate: true`, scene_data provided | Bridge called normally, no validation |
| No scene_data | Operations with `validate: true`, scene_data=None | Bridge called normally, no validation |
| BLOCKED prevents bridge | validate:true op that would be BLOCKED | Bridge `request` NOT called, response has `status: "BLOCKED"` |
| BLOCKED response shape | Same as above | Response contains `"validation"` list and `"operations_blocked"` count |
| WARNING allows bridge | validate:true op with WARNING-level result | Bridge called, response includes `"validation"` key alongside `"results"` |
| Mixed batch atomic blocking | One BLOCKED op + one valid op in same batch | Bridge NOT called for any op |
| add_child with validate | `op: "add_child"` with position and `validate: true` | `validate_move` is called |

### Step 2: Run the full test suite

```bash
pytest tests/ -v
```

**Expected outcome**: All tests pass, zero failures. The total test count should be the prior baseline (approximately 662+ tests from the sprint-5f spec) plus the new spatial validator tests (27+). No existing tests should be broken by the changes.

**Key regression checks:**

- `tests/test_bridge/test_tools.py` -- existing bridge tool tests must still pass. The `node_ops` tool was modified to accept `scene_data` but it defaults to `None`, so existing calls with no `scene_data` argument must behave identically.
- `tests/test_tools/test_spatial_audit.py` -- the spatial audit tool is separate from spatial validation. These tests must be unaffected.
- All other test files must be unaffected since no other source files were modified.

### Step 3: Verify backward compatibility

The following behavioral invariants must hold:

1. **Existing `node_ops` calls work unchanged**: Calling `node_ops(operations=[...])` without `scene_data` must produce the same result as before the sprint. The `scene_data` parameter defaults to `None` and validation is skipped entirely.

2. **Existing `godotiq_node_ops` MCP wrapper calls work unchanged**: Calling the wrapper without the `scene` parameter and without `validate: true` in any operation must produce the same result as before. No session access occurs.

3. **Graceful degradation**: When `validate: true` is present but `ctx` is `None`, `session` is `None`, or `resolve_scene_spatial` returns `None`, validation is silently skipped and the operation proceeds normally via the bridge.

### Step 4: Verify prompt documentation

Open `src/godotiq/prompts/godot_development.md` and confirm it contains a "Spatial Validation" subsection that covers:

- How to use `validate: true` on move, scale, or add_child operations
- The `scene` parameter for specifying which scene to validate against
- The three severity levels (OK, WARNING, BLOCKED)
- Atomic batch behavior (if one op is blocked, none execute)
- Recommendation to always use `validate: true` when moving objects in 3D
- Recommendation to `save_scene` before validated operations if prior unsaved changes exist
- An example usage snippet

### Step 5: Verify module boundaries

Confirm that `src/godotiq/tools/bridge/spatial_validator.py`:

- Has NO imports from `godotiq.session`, `godotiq.bridge`, `godotiq.server`, or `mcp`
- Uses only stdlib imports (`math`, `typing`, etc.)
- All public functions (`validate_move`, `validate_scale`) accept plain dicts and return plain dicts
- Module-level constants are defined for all thresholds: `MIN_WALL_DISTANCE` (0.2), `WARN_WALL_DISTANCE` (0.5), `OVERLAP_THRESHOLD` (0.05), `SCALE_OUTLIER_FACTOR` (3.0)

Confirm that `src/godotiq/tools/bridge/node_ops.py`:

- Imports `validate_move` and `validate_scale` from `spatial_validator`
- Accepts `scene_data: dict | None = None` as a parameter
- Does NOT import or access session, MCP context, or any resolver

Confirm that `src/godotiq/tools/bridge/__init__.py`:

- Is the only file that accesses `ctx.request_context.lifespan_context["session"]`
- Converts `WorldNode` objects to plain dicts before passing to `_node_ops`
- Imports `_read_main_scene` from `godotiq.tools.memory` for main scene fallback (or implements equivalent inline logic)

## Files Involved

Files created by prior sections (should all exist before verification):

- `/Users/salvatorefarruggio/Desktop/godotiq/src/godotiq/tools/bridge/spatial_validator.py`
- `/Users/salvatorefarruggio/Desktop/godotiq/tests/test_bridge/test_spatial_validator.py`

Files modified by prior sections (should contain the sprint changes):

- `/Users/salvatorefarruggio/Desktop/godotiq/src/godotiq/tools/bridge/node_ops.py`
- `/Users/salvatorefarruggio/Desktop/godotiq/src/godotiq/tools/bridge/__init__.py`
- `/Users/salvatorefarruggio/Desktop/godotiq/src/godotiq/prompts/godot_development.md`

Files that must NOT have been modified:

- `/Users/salvatorefarruggio/Desktop/godotiq/godot-addon/` (entire directory)
- `/Users/salvatorefarruggio/Desktop/godotiq/src/godotiq/parsers/` (entire directory)
- `/Users/salvatorefarruggio/Desktop/godotiq/src/godotiq/resolvers/` (entire directory)
- `/Users/salvatorefarruggio/Desktop/godotiq/tests/test_bridge/test_tools.py`
- `/Users/salvatorefarruggio/Desktop/godotiq/tests/test_bridge/test_editor_screenshot.py`
- `/Users/salvatorefarruggio/Desktop/godotiq/tests/test_tools/test_spatial_audit.py`

## Summary Checklist

- [ ] `pytest tests/test_bridge/test_spatial_validator.py -v` -- all 27+ tests pass
- [ ] `pytest tests/ -v` -- full suite passes, zero regressions
- [ ] Existing `node_ops` calls without `scene_data` work identically to pre-sprint behavior
- [ ] Existing `godotiq_node_ops` calls without `scene` or `validate` work identically
- [ ] Graceful degradation when ctx/session/scene data is unavailable
- [ ] Prompt documentation includes Spatial Validation subsection with all required content
- [ ] `spatial_validator.py` has zero imports from session, bridge, server, or mcp
- [ ] `node_ops.py` does not access session or MCP context directly
- [ ] `__init__.py` is the sole bridge between session and node_ops validation
- [ ] No files outside the defined modify/create set were changed

## Actual Verification Results

All checks passed:

- **Spatial validator tests**: 33/33 passed (0.27s)
- **Full test suite**: 695/695 passed (9.62s), zero regressions
- **Module boundaries**: `spatial_validator.py` imports only `__future__` and `math`
- **Prompt documentation**: Spatial Validation subsection present with all required content
- **Backward compatibility**: Existing calls without `scene_data`/`validate` work identically (verified by 662+ pre-existing tests passing)