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# -*- coding: utf-8 -*-
#
# diffoscope: in-depth comparison of files, archives, and directories
#
# Copyright © 2017 Chris Lamb <lamby@debian.org>
#
# diffoscope is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# diffoscope is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with diffoscope. If not, see <https://www.gnu.org/licenses/>.
import pytest
from diffoscope.comparators.binary import FilesystemFile
from diffoscope.comparators.device import Device
from diffoscope.comparators.utils.specialize import specialize
from utils.data import load_fixture, get_data, normalize_zeros
from utils.tools import skip_unless_tools_exist
text_ascii1 = load_fixture('text_ascii1')
@pytest.fixture
def devnull():
return specialize(FilesystemFile('/dev/null'))
@pytest.fixture
def differences(devnull, text_ascii1):
return devnull.compare_bytes(text_ascii1)
@pytest.fixture
def differences_reverse(text_ascii1, devnull):
return text_ascii1.compare_bytes(devnull)
def test_identification(devnull):
assert isinstance(devnull, Device)
@skip_unless_tools_exist('xxd')
def test_diff(differences):
expected_diff = get_data('device_expected_diff')
assert normalize_zeros(differences.unified_diff) == expected_diff
@skip_unless_tools_exist('xxd')
def test_diff_reverse(differences_reverse):
expected_diff = get_data('device_expected_diff_reverse')
assert normalize_zeros(differences_reverse.unified_diff) == expected_diff
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