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#
# diffoscope: in-depth comparison of files, archives, and directories
#
# Copyright © 2015 Jérémy Bobbio <lunar@debian.org>
# Copyright © 2016-2020 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 subprocess
from diffoscope.config import Config
from diffoscope.comparators.dex import DexFile
from diffoscope.comparators.missing_file import MissingFile
from ..utils.data import load_fixture, get_data
from ..utils.tools import (
skip_unless_tools_exist,
skip_unless_tool_is_at_least,
skip_unless_tool_is_between,
)
from .test_java import javap_version
dex1 = load_fixture("test1.dex")
dex2 = load_fixture("test2.dex")
def enjarify_version():
# Module enjarify.typeinference appeared in enjarify 1.0.3. We use a call
# directly to the python3 binary over importing with this module to escape
# virtualenvs and to match the behaviour of enjarify(1).
if (
subprocess.call(
("python3", "-c", "import enjarify.typeinference"),
stderr=subprocess.PIPE,
)
== 0
):
return "1.0.3"
return "1.0.2"
def test_identification(dex1):
assert isinstance(dex1, DexFile)
def test_no_differences(dex1):
difference = dex1.compare(dex1)
assert difference is None
@pytest.fixture
def differences(dex1, dex2):
return dex1.compare(dex2).details
def check_dex_differences(differences, expected_diff):
assert differences[0].source1 == "dexdump -a -d -f -h {}"
assert differences[0].source2 == "dexdump -a -d -f -h {}"
assert differences[1].source1 == "test1.jar"
assert differences[1].source2 == "test2.jar"
zipinfo = differences[1].details[0]
classdiff = differences[1].details[1]
assert zipinfo.source1 == "zipinfo -v {}"
assert zipinfo.source2 == "zipinfo -v {}"
assert classdiff.source1 == "com/example/MainActivity.class"
assert classdiff.source2 == "com/example/MainActivity.class"
found_diff = (
differences[0].unified_diff
+ zipinfo.unified_diff
+ classdiff.details[0].unified_diff
)
assert expected_diff == found_diff
@skip_unless_tools_exist("enjarify", "zipinfo", "javap", "procyon", "dexdump")
@skip_unless_tool_is_between("javap", javap_version, "9.0.4", "14.0")
@skip_unless_tool_is_at_least("enjarify", enjarify_version, "1.0.3")
def test_differences(differences):
expected_diff = get_data("dex_expected_diffs")
check_dex_differences(differences, expected_diff)
@skip_unless_tools_exist("enjarify", "zipinfo", "javap", "dexdump")
@skip_unless_tool_is_at_least("javap", javap_version, "14.0")
@skip_unless_tool_is_at_least("enjarify", enjarify_version, "1.0.3")
def test_javap_14_differences(differences):
expected_diff = get_data("dex_javap_14_expected_diffs")
check_dex_differences(differences, expected_diff)
@skip_unless_tools_exist("enjarify", "zipinfo", "javap")
def test_compare_non_existing(monkeypatch, dex1):
monkeypatch.setattr(Config(), "new_file", True)
difference = dex1.compare(MissingFile("/nonexisting", dex1))
assert difference.source2 == "/nonexisting"
assert difference.details[-1].source2 == "/dev/null"
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