From dd8aa8c7b161fc3114b92badd1b891d2fd784309 Mon Sep 17 00:00:00 2001 From: belono Date: Sun, 22 Oct 2023 16:58:03 +0200 Subject: [PATCH] Add test_printer_cups.py --- test/test_printers/test_printer_cups.py | 111 ++++++++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 test/test_printers/test_printer_cups.py diff --git a/test/test_printers/test_printer_cups.py b/test/test_printers/test_printer_cups.py new file mode 100644 index 0000000..96c3fda --- /dev/null +++ b/test/test_printers/test_printer_cups.py @@ -0,0 +1,111 @@ +#!/usr/bin/python +# -*- coding: utf-8 -*- +"""tests for the Cups printer + +:author: Benito López and the python-escpos developers +:organization: `python-escpos `_ +:copyright: Copyright (c) 2023 `python-escpos `_ +:license: MIT +""" + +import logging +import sys + +import pytest + +# skip all the tests if the platform is Windows +pytestmark = pytest.mark.skipif( + sys.platform == "win32", reason="skipping non Windows platform specific tests" +) + + +def test_device_not_initialized(cupsprinter): + """ + GIVEN a cups printer object + WHEN it is not initialized + THEN check the device property is False + """ + assert cupsprinter._device is False + + +def test_open_raise_exception(cupsprinter, devicenotfounderror): + """ + GIVEN a cups printer object + WHEN open() is set to raise a DeviceNotFoundError on error + THEN check the exception is raised + """ + cupsprinter.host = "fakehost" + + with pytest.raises(devicenotfounderror): + cupsprinter.open(raise_not_found=True) + + +def test_open_not_raise_exception(cupsprinter, caplog): + """ + GIVEN a cups printer object + WHEN open() is set to not raise on error but simply cancel + THEN check the error is logged and open() canceled + """ + cupsprinter.host = "fakehost" + + with caplog.at_level(logging.ERROR): + cupsprinter.open(raise_not_found=False) + + assert "not available" in caplog.text + assert cupsprinter.device is None + + +def test_open(cupsprinter, caplog, mocker): + """ + GIVEN a cups printer object and a mocked pycups device + WHEN a valid connection to a device is opened + THEN check the success is logged and the device property is set + """ + mocker.patch("cups.Connection") + mocker.patch("escpos.printer.CupsPrinter.printers", new={"test_printer": "Test"}) + + cupsprinter.printer_name = "test_printer" + + with caplog.at_level(logging.INFO): + cupsprinter.open() + + assert "enabled" in caplog.text + assert cupsprinter.device + + +def test_close_on_reopen(cupsprinter, mocker): + """ + GIVEN a cups printer object and a mocked connection + WHEN a valid connection to a device is reopened before close + THEN check the close method is called if _device + """ + spy = mocker.spy(cupsprinter, "close") + mocker.patch("cups.Connection") + mocker.patch("escpos.printer.CupsPrinter.printers", new={"test_printer": "Test"}) + + cupsprinter.printer_name = "test_printer" + + cupsprinter.open() + assert cupsprinter._device + + cupsprinter.open() + spy.assert_called_once_with() + + +def test_close(cupsprinter, caplog, mocker): + """ + GIVEN a cups printer object and a mocked pycups device + WHEN a connection is opened and closed + THEN check the closing is logged and the device property is False + """ + mocker.patch("cups.Connection") + mocker.patch("escpos.printer.CupsPrinter.printers", new={"test_printer": "Test"}) + + cupsprinter.printer_name = "test_printer" + cupsprinter.open() + + with caplog.at_level(logging.INFO): + cupsprinter.close() + + assert "Closing" in caplog.text + assert cupsprinter._device is False