import sys, os
sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "..")))
from comparator.normalizer import Normalizer


def test_ebcdic_to_ascii():
    n = Normalizer()
    assert n.normalize_encoding(b'\xc1\xc2', "EBCDIC") == "AB"


def test_ascii_passthrough():
    n = Normalizer()
    assert n.normalize_encoding(b"hello", "ASCII") == "hello"


def test_comp3_to_decimal():
    n = Normalizer()
    assert n.normalize_comp3(b'\x15\x00\x0C') == "1500"


def test_comp3_negative():
    n = Normalizer()
    assert n.normalize_comp3(b'\x15\x00\x1D') == "-1500"


def test_ir_record_creation():
    n = Normalizer()
    ir = n.to_ir_record(
        field_name="BR-AMT", raw_hex="15000C",
        decoded_value="1500", encoding="EBCDIC",
        field_type="COMP3", length=5, scale=2, signed=True)
    assert ir.field_name == "BR-AMT"
    assert ir.cobol.decoded_value == "1500"
    assert ir.cobol.encoding == "EBCDIC"


def test_date_iso_normalization():
    n = Normalizer()
    assert n.normalize_date("20260522") == "2026-05-22"
    assert n.normalize_date("2026-05-22") == "2026-05-22"


def test_null_ir_record():
    n = Normalizer()
    ir = n.to_null_ir("BR-DATE", side="java")
    assert ir.field_name == "BR-DATE"
    assert ir.java is None