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feat(tests): add robust mock implementations and expand test coverage for S3 and OPFS storage

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- Introduced comprehensive mock for the Origin Private File System (OPFS) in `tests/mocks/opfs-mock.ts`, simulating environment for detailed storage testing.
- Added `tests/opfs-storage.test.ts`, containing extensive test cases for `OPFSStorage` operations including metadata, nouns, verbs, and storage status.
- Improved S3 mock implementation in `tests/mocks/s3-mock.ts` with better object persistence, validation, and logging to emulate real S3 behavior.
- Resolved issues related to metadata, nouns, verbs, and storage usage inconsistencies in mock storage adapters.
- Enhanced logging and error handling to aid in debugging and test reliability.

Purpose: Improve test completeness and reliability by introducing detailed mocks and extended test cases for S3 and OPFS storage systems.
This commit is contained in:
David Snelling 2025-07-21 13:42:10 -07:00
parent e1632523b4
commit e3eebaf476
7 changed files with 1809 additions and 90 deletions
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46
STORAGE_TESTING.md
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@ -68,12 +68,54 @@ The storage tests can be run with:
npx vitest run tests/storage-adapters.test.ts
```
## Mock Implementations for Testing
To facilitate testing of storage adapters in different environments, we've created mock implementations for both OPFS and S3 compatible storage:
### OPFS Mock
The OPFS (Origin Private File System) mock implementation provides a simulated file system environment for testing OPFS storage in a Node.js environment without requiring actual browser APIs. It's located in `/tests/mocks/opfs-mock.ts` and includes:
- A mock file system using Maps to store directories and files
- Mock implementations of FileSystemDirectoryHandle and FileSystemFileHandle
- Functions to set up and clean up the mock environment
- Support for all OPFS operations used by the OPFSStorage adapter
### S3 Mock
The S3 compatible storage mock implementation provides a simulated S3 bucket environment for testing S3 compatible storage in a Node.js environment without requiring actual S3 credentials. It's located in `/tests/mocks/s3-mock.ts` and includes:
- A mock S3 storage using Maps to store buckets and objects
- Mock implementations of S3 commands (CreateBucketCommand, PutObjectCommand, etc.)
- Functions to set up and clean up the mock environment
- Support for basic S3 operations used by the S3CompatibleStorage adapter
## Running the Tests
The storage tests can be run with:
```bash
# Run all storage tests
npx vitest run tests/storage-adapters.test.ts
# Run OPFS storage tests
npx vitest run tests/opfs-storage.test.ts
# Run S3 storage tests
npx vitest run tests/s3-storage.test.ts
```
## Future Improvements
1. **Increase Test Coverage**: Add more tests for specific methods of each storage adapter
2. **Improve OPFS Testing**: Develop better mocking for the OPFS API to test operations in browser environments
3. **Add S3 Testing**: Add tests for S3CompatibleStorage and R2Storage using mock S3 services
2. **Improve OPFS Testing**: Continue to enhance the OPFS mock implementation to better simulate browser environments
3. **Enhance S3 Testing**: Improve the S3 mock implementation to fully support all operations used by the S3CompatibleStorage adapter, particularly:
- Fix issues with ListObjectsV2Command response handling
- Improve handling of metadata in GetObjectCommand
- Add better support for error cases and edge conditions
4. **Integration Tests**: Add integration tests that test the storage system with real data
5. **Browser Environment Testing**: Add tests that run in actual browser environments for OPFS storage
6. **Real S3 Testing**: Add optional tests that can run against real S3 compatible services when credentials are provided
## Conclusion