python-escpos/test/test_functions/test_function_text.py

63 lines
1.5 KiB
Python

#!/usr/bin/python
"""tests for the text printing function
:author: `Patrick Kanzler <dev@pkanzler.de>`_
:organization: `python-escpos <https://github.com/python-escpos>`_
:copyright: Copyright (c) 2016 `python-escpos <https://github.com/python-escpos>`_
:license: MIT
"""
import hypothesis.strategies as st
import mock
from hypothesis import given
from escpos.printer import Dummy
def get_printer() -> Dummy:
return Dummy(magic_encode_args={"disabled": True, "encoding": "CP437"})
@given(text=st.text())
def test_text(text: str):
"""Test that text() calls the MagicEncode object."""
instance = get_printer()
with mock.patch.object(instance.magic, "write") as write:
instance.text(text)
write.assert_called_with(text)
def test_block_text() -> None:
printer = get_printer()
printer.block_text(
"All the presidents men were eating falafel for breakfast.", font="a"
)
assert (
printer.output == b"All the presidents men were eating falafel\nfor breakfast."
)
def test_textln() -> None:
printer = get_printer()
printer.textln("hello, world")
assert printer.output == b"hello, world\n"
def test_textln_empty() -> None:
printer = get_printer()
printer.textln()
assert printer.output == b"\n"
def test_ln() -> None:
printer = get_printer()
printer.ln()
assert printer.output == b"\n"
def test_multiple_ln() -> None:
printer = get_printer()
printer.ln(3)
assert printer.output == b"\n\n\n"