python-escpos/test/test_functions.py

28 lines
710 B
Python

import pytest
from escpos.printer import Dummy
def test_line_spacing_code_gen():
printer = Dummy()
printer.line_spacing(10)
assert printer.output == b"\x1b3\n"
def test_line_spacing_rest():
printer = Dummy()
printer.line_spacing()
assert printer.output == b"\x1b2"
def test_line_spacing_error_handling():
printer = Dummy()
with pytest.raises(ValueError):
printer.line_spacing(99, divisor=44)
with pytest.raises(ValueError):
printer.line_spacing(divisor=80, spacing=86)
with pytest.raises(ValueError):
printer.line_spacing(divisor=360, spacing=256)
with pytest.raises(ValueError):
printer.line_spacing(divisor=180, spacing=256)