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# Copyright 2017 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
import shutil
import tempfile
from portage import os
from portage.tests import TestCase
from portage.checksum import perform_md5
from portage.util.file_copy import copyfile
class CopyFileTestCase(TestCase):
def testCopyFile(self):
tempdir = tempfile.mkdtemp()
try:
src_path = os.path.join(tempdir, "src")
dest_path = os.path.join(tempdir, "dest")
content = b"foo"
with open(src_path, "wb") as f:
f.write(content)
copyfile(src_path, dest_path)
self.assertEqual(perform_md5(src_path), perform_md5(dest_path))
finally:
shutil.rmtree(tempdir)
class CopyFileSparseTestCase(TestCase):
def testCopyFileSparse(self):
tempdir = tempfile.mkdtemp()
try:
src_path = os.path.join(tempdir, "src")
dest_path = os.path.join(tempdir, "dest")
content = b"foo"
# Use seek to create some sparse blocks. Don't make these
# files too big, in case the filesystem doesn't support
# sparse files.
with open(src_path, "wb") as f:
f.write(content)
f.seek(2 ** 17, 1)
f.write(content)
f.seek(2 ** 18, 1)
f.write(content)
# Test that sparse blocks are handled correctly at
# the end of the file (involves seek and truncate).
f.seek(2 ** 17, 1)
copyfile(src_path, dest_path)
self.assertEqual(perform_md5(src_path), perform_md5(dest_path))
# This last part of the test is expected to fail when sparse
# copy is not implemented, so set the todo flag in order
# to tolerate failures.
self.todo = True
# If sparse blocks were preserved, then both files should
# consume the same number of blocks.
self.assertEqual(os.stat(src_path).st_blocks, os.stat(dest_path).st_blocks)
finally:
shutil.rmtree(tempdir)
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