python-storage-abstraction

You can test Python file I/O operations without touching the real filesystem by defining a Protocol-based storage abstraction and injecting an in-memory storage backend into your services during unit tests.

The Python Protocol pattern for storage abstraction defines a contract with methods like read, write, delete, and directory management, allowing services to program to an interface rather than a concrete filesystem implementation.

Use dependency injection to swap storage backends in Python by defining a StorageProtocol and passing interchangeable implementations, such as MemoryStorage or filesystem storage, into your service constructors.

Yes, you can simulate file reads and writes in memory for Python unit tests by instantiating a MemoryStorage backend that fulfills the StorageProtocol contract and injecting it into your service.

You should use a storage protocol instead of direct filesystem calls to promote clean architecture, separate concerns, and ensure testability by avoiding filesystem side effects in your unit tests.

Yes, the storage abstraction supports directory management methods alongside read, write, delete, and exists operations, ensuring consistent filesystem-like usage across all backend implementations.