Implement custom exceptions

[abaksy]

Use custom exceptions to handle all errors thrown by PESUAcademy-related functionality in app/pesu.py. The custom exceptions are derived from the base PESUAuthError class in app/exceptions/base.py. For now all usable exceptions are in app/exceptions/exceptions.py with the option of splitting each into its own file later on if required.

[aditeyabaral]

We should catch parsing errors in get_profile_informaiton. If the website changes layout, then this part will silently fail without information.

[Copilot]

Pull Request Overview

This PR implements custom exceptions for handling all errors in PESUAcademy-related functionality, replacing generic error handling with structured exception types derived from a base PESUAcademyError class.

• Introduces authentication-specific exceptions (AuthenticationError, CSRFTokenError, ProfileFetchError, ProfileParseError)
• Refactors error handling in app/pesu.py to use structured exceptions instead of generic Exception types
• Updates tests to expect the new exception types and adjusts response format assertions

Reviewed Changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
app/exceptions/base.py	Defines the base PESUAcademyError exception class with message and status code
app/exceptions/authentication.py	Implements specific authentication-related exception classes
app/pesu.py	Refactors error handling to use custom exceptions instead of generic ones
app/app.py	Adds exception handler for PESUAcademyError and updates error response format
tests/	Updates test assertions to expect new exception types and response formats

Comments suppressed due to low confidence (4)

app/exceptions/base.py:1

• The class name 'PESUAcademyError' is inconsistent with the PR description which mentions 'PESUAuthError' as the base class.

class PESUAcademyError(Exception):

tests/unit/test_pesu.py:18

• The test expects ProfileFetchError to be raised but still tries to assert on the result. Since an exception is expected, the result assignment and assertions on lines 19-20 are unreachable and should be removed.

        result = pesu.get_profile_information(MagicMock(), "testuser")

tests/unit/test_pesu.py:29

• Similar to the previous test, this code tries to access result after expecting an exception. Lines 30-31 are unreachable and should be removed.

        result = pesu.get_profile_information(MagicMock(), "testuser")

tests/unit/test_pesu.py:40

• This test expects CSRFTokenError but still asserts on result. Lines 41-42 are unreachable after the exception is raised and should be removed.

        result = pesu.authenticate("testuser", "testpass")