Test readUserDataFile Function

[emmalgs]

Ticket: Test readUserDataFile Function

Description:

The readUserDataFile function needs to be thoroughly tested to ensure it correctly reads and parses user data files from the ./data directory based on the provided userId. This testing should cover various scenarios to verify its functionality.

Context:

The readUserDataFile function is a critical part of our application responsible for reading and parsing individual user data files. It relies on the file system to read files from the ./data directory.

Acceptance Criteria:

1. Positive Test - Valid User File:

   • Create a temporary testing directory.
   • Populate the ./data directory with a temporary user data file with a known userId.
   • Call readUserDataFile with the known userId.
   • Ensure that the function resolves the Promise with the expected user object based on the test file.
   • Clean up the temporary files and directories after the test.

2. Error Test - File Not Found:

   • Call readUserDataFile with a userId that does not correspond to an existing file in the ./data directory.
   • Ensure that the function rejects the Promise with an appropriate error message.
   • Clean up any temporary resources created during the test.

3. Error Test - Parsing Error:

   • Create a temporary testing directory.
   • Populate the ./data directory with a user data file for which JSON parsing will fail intentionally (e.g., invalid JSON format).
   • Call readUserDataFile with the userId corresponding to the intentionally problematic file.
   • Verify that the function rejects the Promise with a parsing-related error.
   • Clean up the temporary files and directories after the test.

Definition of Done:

• All test scenarios are implemented.
• Tests pass successfully, and the function behaves as expected.
• Test code is clean, organized, and follows best practices.
• Relevant documentation is updated.