# Brainy Test Matrix

This document outlines a comprehensive testing strategy for the Brainy vector database, ensuring all functionality works correctly across different environments and configurations.

## Test Dimensions

The test matrix covers the following dimensions:

1. **Public Methods**: All public methods of the BrainyData class
2. **Storage Adapters**: All supported storage types
3. **Environments**: All supported runtime environments
4. **Test Types**: Happy path, error handling, edge cases, performance

## Storage Adapters

- Memory Storage
- File System Storage
- OPFS (Origin Private File System) Storage
- S3-Compatible Storage (including R2)

## Environments

- Node.js
- Browser
- Web Worker
- Worker Threads

## Test Types

- **Happy Path**: Tests with valid inputs and expected behavior
- **Error Handling**: Tests with invalid inputs, error conditions
- **Edge Cases**: Tests with boundary values, empty inputs, etc.
- **Performance**: Tests measuring execution time with various dataset sizes

## Core Method Test Matrix

| Method | Memory | FileSystem | OPFS | S3 | Error Handling | Edge Cases | Performance |
|--------|--------|------------|------|----|--------------------|------------|-------------|
| init() | ✅ | ✅ | ⚠️ | ⚠️ | ⚠️ | ⚠️ | ❌ |
| add() | ✅ | ✅ | ⚠️ | ❌ | ⚠️ | ⚠️ | ❌ |
| addBatch() | ✅ | ✅ | ❌ | ❌ | ⚠️ | ❌ | ❌ |
| search() | ✅ | ✅ | ⚠️ | ❌ | ⚠️ | ⚠️ | ❌ |
| searchText() | ✅ | ✅ | ❌ | ❌ | ⚠️ | ❌ | ❌ |
| get() | ✅ | ✅ | ❌ | ❌ | ⚠️ | ❌ | ❌ |
| delete() | ✅ | ✅ | ❌ | ❌ | ⚠️ | ❌ | ❌ |
| updateMetadata() | ✅ | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ |
| relate() | ⚠️ | ⚠️ | ❌ | ❌ | ❌ | ❌ | ❌ |
| findSimilar() | ⚠️ | ⚠️ | ❌ | ❌ | ❌ | ❌ | ❌ |
| clear() | ✅ | ✅ | ⚠️ | ❌ | ❌ | ❌ | ❌ |
| isReadOnly()/setReadOnly() | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ |
| getStatistics() | ⚠️ | ⚠️ | ❌ | ❌ | ❌ | ❌ | ❌ |
| backup()/restore() | ⚠️ | ⚠️ | ❌ | ❌ | ❌ | ❌ | ❌ |

Legend:
- ✅ Well tested
- ⚠️ Partially tested
- ❌ Not tested

## Environment Test Matrix

| Environment | Memory | FileSystem | OPFS | S3 |
|-------------|--------|------------|------|-----|
| Node.js | ✅ | ✅ | N/A | ⚠️ |
| Browser | ⚠️ | N/A | ⚠️ | ❌ |
| Web Worker | ❌ | N/A | ❌ | ❌ |
| Worker Threads | ❌ | ⚠️ | N/A | ❌ |

## Testing Gaps to Address

1. **Error handling scenarios** for each method
   - Invalid inputs
   - Network failures
   - Storage failures
   - Concurrent operation conflicts

2. **Edge cases**
   - Empty queries
   - Invalid IDs
   - Maximum size datasets
   - Zero-length vectors
   - Dimension mismatches

3. **Different storage adapters**
   - Complete OPFS testing
   - Complete S3 testing
   - Test adapter switching/fallback

4. **Multi-environment behavior**
   - Browser-specific tests
   - Web Worker tests
   - Worker Threads tests

5. **Read-only mode enforcement**
   - Test all write operations in read-only mode

6. **Relationship operations**
   - Complete testing for relate()
   - Complete testing for findSimilar()

7. **Metadata handling**
   - Test metadata in add/relate operations
   - Test updateMetadata edge cases

8. **Large dataset operations**
   - Performance with 10k+ vectors
   - Memory usage optimization

9. **Concurrent operations**
   - Thread safety
   - Race condition handling

10. **Statistics and monitoring**
    - Accuracy of statistics
    - Performance impact of statistics tracking

## Implementation Plan

1. Create error handling tests for core methods
2. Create edge case tests for core methods
3. Complete storage adapter tests for OPFS and S3
4. Create environment-specific test suites
5. Implement read-only mode tests
6. Complete relationship operation tests
7. Create metadata handling tests
8. Implement performance tests with various dataset sizes
9. Create concurrent operation tests
10. Complete statistics and monitoring tests