tests: add asar comparator

#

# diffoscope: in-depth comparison of files, archives, and directories

#

# Copyright © 2015 Jérémy Bobbio <lunar@debian.org>

# Copyright © 2015-2017, 2020 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.config import Config

from diffoscope.comparators.asar import AsarFile

from diffoscope.comparators.missing_file import MissingFile

from ..utils.data import load_fixture, get_data

from ..utils.tools import skip_unless_tools_exist

from ..utils.nonexisting import assert_non_existing

asar1 = load_fixture("test1.asar")

asar2 = load_fixture("test2.asar")

def test_identification(asar1):

    assert isinstance(asar1, AsarFile)

def test_no_differences(asar1):

    difference = asar1.compare(asar1)

    assert difference is None

@pytest.fixture

def differences(asar1, asar2):

    return asar1.compare(asar2).details

@skip_unless_tools_exist("asar")

def test_text_file(differences):

    assert differences[0].source1 == "dir/text"

    assert differences[0].source2 == "dir/text"

    expected_diff = get_data("text_ascii_expected_diff")

    assert differences[0].unified_diff == expected_diff