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#
# diffoscope: in-depth comparison of files, archives, and directories
#
# Copyright © 2015 Jérémy Bobbio <lunar@debian.org>
# Copyright © 2015-2020 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
import diffoscope.comparators
from diffoscope.config import Config
from diffoscope.comparators.deb import DebFile, Md5sumsFile, DebDataTarFile
from diffoscope.comparators.binary import FilesystemFile
from diffoscope.comparators.missing_file import MissingFile
from diffoscope.comparators.utils.specialize import specialize
from ..utils.tools import (
skip_unless_tools_exist,
skip_unless_file_version_is_at_least,
)
from ..utils.data import load_fixture, get_data
deb1 = load_fixture("test1.deb")
deb2 = load_fixture("test2.deb")
def test_identification(deb1):
assert isinstance(deb1, DebFile)
def test_no_differences(deb1):
difference = deb1.compare(deb1)
assert difference is None
@pytest.fixture
def differences(deb1, deb2):
return deb1.compare(deb2).details
def test_metadata(differences):
expected_diff = get_data("deb_metadata_expected_diff")
assert differences[0].unified_diff == expected_diff
def test_compressed_files(differences):
assert differences[1].source1 == "control.tar.gz"
assert differences[2].source1 == "data.tar.gz"
def test_identification_of_md5sums_outside_deb(tmpdir):
path = str(tmpdir.join("md5sums"))
open(path, "w")
f = specialize(FilesystemFile(path))
assert type(f) is FilesystemFile
def test_identification_of_md5sums_in_deb(deb1, deb2, monkeypatch):
orig_func = Md5sumsFile.recognizes
@staticmethod
def probe(file):
ret = orig_func(file)
if ret:
test_identification_of_md5sums_in_deb.found = True
return ret
test_identification_of_md5sums_in_deb.found = False
monkeypatch.setattr(Md5sumsFile, "recognizes", probe)
deb1.compare(deb2)
assert test_identification_of_md5sums_in_deb.found
def test_md5sums(differences):
assert differences[1].details[0].details[1].details[0].comment
# we skip diffing the md5sums since it's not interesting, the actual files are diffed instead
assert not differences[1].details[0].details[1].details[0].unified_diff
assert not differences[1].details[0].details[1].details[0].details
def test_identical_files_in_md5sums(deb1, deb2):
for name in [
"./usr/share/doc/test/README.Debian",
"./usr/share/doc/test/copyright",
]:
assert deb1.md5sums[name] == deb2.md5sums[name]
def test_identification_of_data_tar(deb1, deb2, monkeypatch):
orig_func = DebDataTarFile.recognizes
@staticmethod
def probe(file):
ret = orig_func(file)
if ret:
test_identification_of_data_tar.found = True
return ret
test_identification_of_data_tar.found = False
monkeypatch.setattr(DebDataTarFile, "recognizes", probe)
deb1.compare(deb2)
assert test_identification_of_data_tar.found
def test_skip_comparison_of_known_identical_files(deb1, deb2, monkeypatch):
compared = set()
orig_func = diffoscope.comparators.utils.compare.compare_files
def probe(file1, file2, **kwargs):
compared.add(file1.name)
return orig_func(file1, file2, **kwargs)
monkeypatch.setattr(
diffoscope.comparators.utils.compare, "compare_files", probe
)
deb1.compare(deb2)
assert "./usr/share/doc/test/README.Debian" not in compared
def test_compare_non_existing(monkeypatch, deb1):
monkeypatch.setattr(Config(), "new_file", True)
difference = deb1.compare(MissingFile("/nonexisting", deb1))
assert difference.source2 == "/nonexisting"
assert difference.details[-1].source2 == "/dev/null"
bug881937_deb1 = load_fixture("bug881937_1.deb")
bug881937_deb2 = load_fixture("bug881937_2.deb")
bug903391_deb1 = load_fixture("bug903391_1.deb")
bug903391_deb2 = load_fixture("bug903391_2.deb")
bug903401_deb1 = load_fixture("bug903401_1.deb")
bug903401_deb2 = load_fixture("bug903401_2.deb")
bug903565_deb1 = load_fixture("bug903565_1.deb")
bug903565_deb2 = load_fixture("bug903565_2.deb")
@skip_unless_tools_exist("xz")
@skip_unless_file_version_is_at_least("5.37")
def test_compare_different_compression(bug881937_deb1, bug881937_deb2):
difference = bug881937_deb1.compare(bug881937_deb2)
assert difference.details[2].source1 == "control.tar.gz"
assert difference.details[2].source2 == "control.tar.xz"
expected_diff = get_data("bug881937_control_expected_diff")
assert (
difference.details[2].details[2].details[1].unified_diff
== expected_diff
)
def test_uncompressed_data_tar(bug903401_deb1, bug903401_deb2):
bug903401_deb1.compare(bug903401_deb2)
def test_uncompressed_control_tar(bug903391_deb1, bug903391_deb2):
bug903391_deb1.compare(bug903391_deb2)
def test_compare_different_compression_multiple_files(
bug903565_deb1, bug903565_deb2
):
bug903565_deb1.compare(bug903565_deb2)
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