python-escpos/test/test_function_barcode.py

#!/usr/bin/python

import escpos.printer as printer
from escpos.capabilities import Profile, BARCODE_B
from escpos.exceptions import BarcodeTypeError, BarcodeCodeError
import pytest


@pytest.mark.parametrize(
    "bctype,data,expected",
    [
        (
            "EAN13",
            "4006381333931",
            b"\x1ba\x01\x1dh@\x1dw\x03\x1df\x00\x1dH\x02\x1dk\x024006381333931\x00",
        )
    ],
)
def test_barcode(bctype, data, expected):
    """should generate different barcode types correctly."""
    instance = printer.Dummy()
    instance.barcode(data, bctype)
    assert instance.output == expected


@pytest.mark.parametrize(
    "bctype,supports_b",
    [
        ("invalid", True),
        ("CODE128", False),
    ],
)
def test_lacks_support(bctype, supports_b):
    """should raise an error if the barcode type is not supported."""
    profile = Profile(features={BARCODE_B: supports_b})
    instance = printer.Dummy(profile=profile)
    with pytest.raises(BarcodeTypeError):
        instance.barcode("test", bctype)

    assert instance.output == b""


@pytest.mark.parametrize(
    "bctype,data",
    [
        ("EAN13", "AA"),
        ("CODE128", "{D2354AA"),
    ],
)
def test_code_check(bctype, data):
    """should raise an error if the barcode code is invalid."""
    instance = printer.Dummy()
    with pytest.raises(BarcodeCodeError):
        instance.barcode(data, bctype)

    assert instance.output == b""