Add more unit tests

[robertjkeller]

Refactored some modules for easier testing.
Added tests for arinc and database modules.

[Copilot]

Pull Request Overview

This PR adds comprehensive unit tests for the database and ARINC modules and refactors modules for improved testability. Key changes include new tests for PostgresDb, SqliteDb, and ARINC parsing; refactoring of main.py to remove redundancies; and the addition of pragma comments for test coverage.

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/test_database.py	New unit tests for validating database behavior and SQL execution.
tests/test_arinc.py	New unit tests covering ARINC parsing and record processing.
src/record_maps.py	Formatting updates and added pragma comments to exclude from coverage.
src/main.py	Removed duplicate ARINC classes; streamlined parser initialization.
src/database.py	Added pragma comments for coverage and minor comment updates.
src/config.py	Removed redundant checks, relying on external config validation.
src/arinc.py	Moved ARINC parsing logic from main to a dedicated module.

Comments suppressed due to low confidence (1)

src/arinc.py:37

• Consider adding tests to handle cases where the input file content is shorter than expected, so that the get_cycle method does not raise an unexpected error.

return self.lines[0][35:39]