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#
# diffoscope: in-depth comparison of files, archives, and directories
#
# Copyright © 2015 Jérémy Bobbio <lunar@debian.org>
# Copyright © 2016 Ximin Luo <infinity0@debian.org>
# Copyright © 2016-2023 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.ar import ArFile
from ..utils import diff_ignore_line_numbers
from ..utils.data import load_fixture, get_data
from ..utils.tools import (
skip_unless_tools_exist,
skip_unless_tool_is_at_least,
skip_if_binutils_does_not_support_x86,
)
from ..utils.nonexisting import assert_non_existing
from ..utils.versions import Version
rlib1 = load_fixture("test1.rlib")
rlib2 = load_fixture("test2.rlib")
@pytest.fixture(scope="function", autouse=True)
def init_tests(request, monkeypatch):
# Make sure decompilation is disabled so that tests don't break
monkeypatch.setattr(Config(), "exclude_commands", ["^radare2.*"])
def llvm_version():
return Version(
subprocess.check_output(["llvm-config", "--version"])
.decode("utf-8")
.strip()
)
def test_identification(rlib1):
assert isinstance(rlib1, ArFile)
def test_no_differences(rlib1):
difference = rlib1.compare(rlib1)
assert difference is None
@pytest.fixture
def differences(rlib1, rlib2):
return rlib1.compare(rlib2).details
@pytest.fixture
def rlib_dis_expected_diff():
actual_ver = llvm_version()
if actual_ver >= "3.8":
diff_file = "rlib_llvm_dis_expected_diff"
if actual_ver >= "5.0":
diff_file = "rlib_llvm_dis_expected_diff_5"
if actual_ver >= "7.0":
diff_file = "rlib_llvm_dis_expected_diff_7"
if actual_ver >= "10.0":
diff_file = "rlib_llvm_dis_expected_diff_10"
if actual_ver >= "15.0":
diff_file = "rlib_llvm_dis_expected_diff_15"
return get_data(diff_file)
@skip_unless_tools_exist("nm")
def test_num_items(differences):
assert len(differences) == 4
@skip_unless_tools_exist("nm")
@skip_if_binutils_does_not_support_x86()
def test_item0_armap(differences):
assert differences[0].source1 == "nm -s {}"
assert differences[0].source2 == "nm -s {}"
expected_diff = get_data("rlib_armap_expected_diff")
assert differences[0].unified_diff == expected_diff
@skip_unless_tools_exist("nm")
@skip_if_binutils_does_not_support_x86()
def test_item1_elf(differences):
assert differences[1].source1 == "alloc_system-d16b8f0e.0.o"
assert differences[1].source2 == "alloc_system-d16b8f0e.0.o"
expected_diff = get_data("rlib_elf_expected_diff")
assert differences[1].details[0].unified_diff == expected_diff
@skip_unless_tools_exist("nm")
def test_item2_rust_metadata_bin(differences):
assert differences[2].source1 == "rust.metadata.bin"
assert differences[2].source2 == "rust.metadata.bin"
@skip_unless_tools_exist("llvm-dis")
@skip_unless_tool_is_at_least("llvm-config", llvm_version, "3.8")
def test_item3_deflate_llvm_bitcode(differences, rlib_dis_expected_diff):
assert differences[3].source1 == "alloc_system-d16b8f0e.0.bytecode.deflate"
assert differences[3].source2 == "alloc_system-d16b8f0e.0.bytecode.deflate"
expected_diff = rlib_dis_expected_diff
actual_diff = differences[3].details[0].details[1].unified_diff
assert diff_ignore_line_numbers(actual_diff) == diff_ignore_line_numbers(
expected_diff
)
@skip_unless_tools_exist("nm")
def test_compare_non_existing(monkeypatch, rlib1):
assert_non_existing(monkeypatch, rlib1)
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