# tests/test_utils.py
import pytest
from utils.data_processing import GTINProcessor, PriceProcessor


class TestGTINProcessor:
    def setup_method(self):
        self.processor = GTINProcessor()

    def test_normalize_valid_gtin(self):
        # Test EAN-13
        assert self.processor.normalize("1234567890123") == "1234567890123"

        # Test UPC-A
        assert self.processor.normalize("123456789012") == "123456789012"

        # Test with decimal
        assert self.processor.normalize("123456789012.0") == "123456789012"

    def test_normalize_invalid_gtin(self):
        assert self.processor.normalize("") is None
        assert self.processor.normalize(None) is None
        assert self.processor.normalize("abc") is None
        assert self.processor.normalize("123") == "000000000123"  # Padded to 12 digits

    def test_validate_gtin(self):
        assert self.processor.validate("1234567890123") is True
        assert self.processor.validate("123456789012") is True
        assert self.processor.validate("12345678") is True
        assert self.processor.validate("123") is False
        assert self.processor.validate("") is False


class TestPriceProcessor:
    def setup_method(self):
        self.processor = PriceProcessor()

    def test_parse_price_currency(self):
        # Test EUR with symbol
        price, currency = self.processor.parse_price_currency("8.26 EUR")
        assert price == "8.26"
        assert currency == "EUR"

        # Test USD with symbol
        price, currency = self.processor.parse_price_currency("$12.50")
        assert price == "12.50"
        assert currency == "USD"

        # Test with comma decimal separator
        price, currency = self.processor.parse_price_currency("8,26 €")
        assert price == "8.26"
        assert currency == "EUR"

    def test_parse_invalid_price(self):
        price, currency = self.processor.parse_price_currency("")
        assert price is None
        assert currency is None

        price, currency = self.processor.parse_price_currency(None)
        assert price is None
        assert currency is None