"""
Tests for OCRNormalizer

Usage:
    pytest tests/normalize/normalizers/test_ocr_normalizer.py -v
"""

import pytest
from src.normalize.normalizers.ocr_normalizer import OCRNormalizer


class TestOCRNormalizer:
    """Test OCRNormalizer functionality"""

    @pytest.fixture
    def normalizer(self):
        """Create normalizer instance for testing"""
        return OCRNormalizer()

    def test_pure_digits(self, normalizer):
        """Pure digit OCR number should return as-is"""
        result = normalizer.normalize('94228110015950070')
        assert '94228110015950070' in result
        assert len(result) == 1

    def test_with_prefix(self, normalizer):
        """OCR number with prefix should extract digits and keep original"""
        result = normalizer.normalize('OCR: 94228110015950070')
        assert 'OCR: 94228110015950070' in result
        assert '94228110015950070' in result

    def test_with_spaces(self, normalizer):
        """OCR number with spaces should be normalized"""
        result = normalizer.normalize('9422 8110 0159 50070')
        assert '94228110015950070' in result

    def test_with_hyphens(self, normalizer):
        """OCR number with hyphens should be normalized"""
        result = normalizer.normalize('1234-5678-9012')
        assert '123456789012' in result

    def test_empty_string(self, normalizer):
        """Empty string should return empty list"""
        result = normalizer('')
        assert result == []

    def test_none_value(self, normalizer):
        """None value should return empty list"""
        result = normalizer(None)
        assert result == []

    def test_callable_interface(self, normalizer):
        """Normalizer should be callable via __call__"""
        result = normalizer('OCR-12345')
        assert '12345' in result

    def test_mixed_separators(self, normalizer):
        """OCR number with mixed separators should be normalized"""
        result = normalizer.normalize('123 456-789 012')
        assert '123456789012' in result

    def test_very_long_ocr(self, normalizer):
        """Very long OCR number should be handled"""
        result = normalizer.normalize('12345678901234567890')
        assert '12345678901234567890' in result