python-escpos/test/test_functions.py

26 lines
723 B
Python

from nose.tools import assert_raises
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 assert_raises(ValueError):
printer.line_spacing(99, divisor=44)
with assert_raises(ValueError):
printer.line_spacing(divisor=80, spacing=86)
with assert_raises(ValueError):
printer.line_spacing(divisor=360, spacing=256)
with assert_raises(ValueError):
printer.line_spacing(divisor=180, spacing=256)