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#
# diffoscope: in-depth comparison of files, archives, and directories
#
# Copyright © 2017, 2020, 2022 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 os
import pytest
from diffoscope.comparators.binwalk import BinwalkFile
from ..utils.data import load_fixture, get_data
from ..utils.tools import skip_unless_tools_exist, skip_unless_module_exists
from ..utils.nonexisting import assert_non_existing
binwalk1 = load_fixture("test1.binwalk")
binwalk2 = load_fixture("test2.binwalk")
skip_if_root = pytest.mark.skipif(
os.getuid() == 0, reason="cannot be run as root"
)
@skip_if_root
@skip_unless_module_exists("binwalk")
def test_identification(binwalk1, binwalk2):
assert isinstance(binwalk1, BinwalkFile)
assert isinstance(binwalk2, BinwalkFile)
@skip_if_root
@skip_unless_module_exists("binwalk")
def test_no_differences(binwalk1):
difference = binwalk1.compare(binwalk1)
assert difference is None
@pytest.fixture
def comparison(binwalk1, binwalk2):
return binwalk1.compare(binwalk2)
@skip_if_root
@skip_unless_tools_exist("cpio")
@skip_unless_module_exists("binwalk")
def test_listing(comparison):
differences = comparison.details
assert comparison.comments == ["comprises of 2 embedded members"]
assert differences[0].source1 == ".cpio file embedded at offset 0"
assert differences[1].source2 == ".cpio file embedded at offset 600"
expected_diff = get_data("binwalk_expected_diff")
assert differences[0].details[0].unified_diff == expected_diff
@skip_if_root
@skip_unless_tools_exist("cpio")
@skip_unless_module_exists("binwalk")
def test_symlink(comparison):
differences = comparison.details
assert differences[0].details[1].source1 == "dir/link"
assert differences[0].details[1].comment == "symlink"
expected_diff = get_data("symlink_expected_diff")
assert differences[0].details[1].unified_diff == expected_diff
@skip_if_root
@skip_unless_tools_exist("cpio")
@skip_unless_module_exists("binwalk")
def test_compare_non_existing(monkeypatch, binwalk1):
assert_non_existing(monkeypatch, binwalk1)
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