Write Test Cases for Document API Endpoints

Description

Currently, we have implemented several API endpoints for document management using FastAPI and SQLAlchemy. These endpoints include functionalities for uploading, retrieving, updating, and deleting documents. To ensure the reliability and stability of our application, we believe it is essential to have comprehensive test coverage for these API routes.

The following API routes need test cases to validate their functionality:

1. POST /upload

   • This endpoint allows users to upload documents.
   • Test cases should cover scenarios such as successful file uploads, file type validations, and error cases when incorrect file formats are uploaded.

2. GET /documents/{document_id}

   • This endpoint retrieves a document by its ID.
   • Test cases should cover scenarios for fetching existing documents, as well as cases where documents with non-existent IDs are requested.

3. GET /documents

   • This endpoint retrieves all documents.
   • Test cases should cover scenarios for fetching documents when the database contains both existing and non-existing documents.

4. POST /documents

   • This endpoint creates a new document.
   • Test cases should cover scenarios for successful document creation, as well as error cases when invalid data is provided.

5. PUT /documents/{document_id}

   • This endpoint updates an existing document.
   • Test cases should cover scenarios for successfully updating existing documents, as well as error cases when updating non-existing documents or providing invalid update data.

6. DELETE /documents/{document_id}

   • This endpoint deletes a document by its ID.
   • Test cases should cover scenarios for successful document deletion, as well as cases where documents with non-existent IDs are requested for deletion.

By adding comprehensive test cases for these API endpoints, we can ensure that the document management system works as intended and provides accurate responses for various scenarios.

Remember to create a separate test file for writing these test cases and to keep the test file in a designated "tests" directory within the project structure. Happy testing!