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#
# diffoscope: in-depth comparison of files, archives, and directories
#
# Copyright © 2017 Juliana Oliveira R <juliana.orod@gmail.org>
# Copyright © 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
import itertools
from ..utils.data import load_fixture, get_data
from ..utils.tools import (
skip_unless_tools_exist,
file_version_is_ge,
skip_unless_file_version_is_at_least,
)
gzip1 = load_fixture("containers/a.tar.gz")
gzip2 = load_fixture("containers/b.tar.gz")
xz1 = load_fixture("containers/a.tar.xz")
xz2 = load_fixture("containers/b.tar.xz")
bzip1 = load_fixture("containers/a.tar.bz2")
bzip2 = load_fixture("containers/b.tar.bz2")
TYPES = "gzip bzip2 xz".split()
@pytest.fixture
def set1(gzip1, bzip1, xz1):
return dict(zip(TYPES, [gzip1, bzip1, xz1]))
@pytest.fixture
def set2(gzip2, bzip2, xz2):
return dict(zip(TYPES, [gzip2, bzip2, xz2]))
def expected_magic_diff(ext1, ext2):
magic = {
"bzip2": "bzip2 compressed data, block size = 900k\n",
"gzip": "gzip compressed data, last modified: Sun Sep 10 22:19:44 2017, from Unix\n",
"xz": "XZ compressed data",
}
if "xz" in (ext1, ext2):
if file_version_is_ge("5.40"):
magic["xz"] += ", checksum CRC64\n"
else:
magic["xz"] += "\n"
return "@@ -1 +1 @@\n" + "-" + magic[ext1] + "+" + magic[ext2]
def expected_type_diff(ext1, ext2):
return "@@ -1 +1 @@\n-%sFile\n+%sFile\n" % (
ext1.capitalize(),
ext2.capitalize(),
)
# Compares same content files, but with different extensions
@skip_unless_tools_exist("xz")
@skip_unless_file_version_is_at_least("5.37")
def test_equal(set1):
for x, y in itertools.product(TYPES, TYPES):
diff = set1[x].compare(set1[y])
if x == y:
assert diff is None
else:
differences = diff.details
assert differences[0].unified_diff == expected_magic_diff(
x, y
), "{} {}".format(x, y)
assert differences[1].unified_diff == expected_type_diff(x, y)
# Compares different content files with different extensions
@skip_unless_tools_exist("xz")
@skip_unless_file_version_is_at_least("5.37")
def test_different(set1, set2):
for x, y in itertools.product(TYPES, TYPES):
expected_diff = get_data("containers/different_files_expected_diff")
differences = set1[x].compare(set2[y]).details
if x == y:
assert differences[0].details[1].unified_diff == expected_diff
else:
assert differences[0].unified_diff == expected_magic_diff(
x, y
), "{} {}".format(x, y)
assert differences[1].unified_diff == expected_type_diff(x, y)
assert differences[2].details[1].unified_diff == expected_diff
|
