"""Test file parsing."""

import pytest

from src.logic import file_parsing


def test_file_parsing_with_header():
    """Test parsing a file with a header."""
    actual = file_parsing.get_product_ids_from_csv('./tests/mock_file_with_header.csv')
    assert actual == {1, 2, 4}


def test_file_parsing_sanitization():
    """Test parsing deduplicates IDs and skips empty lines."""
    actual = file_parsing.get_product_ids_from_csv('./tests/mock_file_without_header.csv')
    assert actual == {2, 3, 4}


def test_file_parsing_raises():
    """Test parsing a malformed file raises an exception."""
    with pytest.raises(ValueError):
        file_parsing.get_product_ids_from_csv('./tests/mock_file_with_error.csv')