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[linker] Add tests

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These tests are adapted from internal ones.

Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>
This commit is contained in:
Lubomír Sedlář 2016-05-05 11:04:15 +02:00
parent 912f81ca16
commit 444c3a21ca
2 changed files with 360 additions and 0 deletions
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1
pungi/linker.py
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@ -69,6 +69,7 @@ class Linker(kobo.log.LoggingBase):
if path1 == path2:
return True
if os.path.islink(path2) and not os.path.exists(path2):
# Broken symlink
return True
if os.path.getsize(path1) != os.path.getsize(path2):
return False

359
tests/test_linker.py Executable file
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@ -0,0 +1,359 @@
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import mock
import errno
try:
import unittest2 as unittest
except ImportError:
import unittest
import os
import shutil
import stat
import sys
sys.path.insert(0, os.path.join(os.path.dirname(__file__), ".."))
from pungi import linker
from tests import helpers
class TestLinkerBase(helpers.PungiTestCase):
def setUp(self):
super(TestLinkerBase, self).setUp()
self.logger = mock.Mock()
self.linker = linker.Linker(logger=self.logger)
self.path_src = self.touch("file", "asdf")
def touch(self, path, contents=None):
path = os.path.join(self.topdir, path)
helpers.touch(path, contents)
return path
def mkdir(self, path):
path = os.path.join(self.topdir, path.lstrip("/"))
try:
os.makedirs(path)
except OSError as ex:
if ex.errno != errno.EEXIST:
raise
return path
def same_inode(self, path1, path2):
st1 = os.stat(path1)
st2 = os.stat(path2)
return (st1.st_dev, st1.st_ino) == (st2.st_dev, st2.st_ino)
def same_content(self, path1, path2):
if self.same_inode(path1, path2):
return True
data1 = open(path1, "r").read()
data2 = open(path2, "r").read()
return data1 == data2
def same_stat(self, path1, path2):
st1 = os.stat(path1)
st2 = os.stat(path2)
if not stat.S_ISDIR(st1.st_mode) and int(st1.st_mtime) != int(st2.st_mtime):
return False
if st1.st_size != st2.st_size:
return False
if st1.st_mode != st2.st_mode:
return False
return True
def assertSameStat(self, a, b):
self.assertTrue(self.same_stat(a, b))
def assertSameFile(self, a, b):
self.assertTrue(os.path.samefile(a, b))
def assertDifferentFile(self, a, b):
self.assertFalse(os.path.samefile(a, b))
class TestLinkerSymlink(TestLinkerBase):
def test_symlink(self):
path_dst = os.path.join(self.topdir, "symlink")
# symlink 'symlink' -> 'file'
self.linker.symlink(self.path_src, path_dst)
self.assertTrue(os.path.islink(path_dst))
self.assertEqual(os.readlink(path_dst), "file")
self.assertSameFile(self.path_src, path_dst)
# linking existing file must pass
self.linker.symlink(self.path_src, path_dst)
# linking existing file with different target must fail
self.assertRaises(OSError, self.linker.symlink, self.path_src, path_dst, relative=False)
def test_symlink_different_type(self):
# try to symlink 'symlink' -> 'another-file' ('symlink' already exists
# and points to 'file')
path_dst = os.path.join(self.topdir, "symlink")
os.symlink(self.path_src, path_dst)
path_src = self.touch("another-file")
self.assertRaises(OSError, self.linker.symlink, path_src, path_dst)
def test_relative_symlink(self):
# symlink bar -> ../a
dir_dst = os.path.join(self.topdir, "foo")
os.makedirs(dir_dst)
path_dst = os.path.join(dir_dst, "bar")
self.linker.symlink(self.path_src, path_dst)
self.assertTrue(os.path.islink(path_dst))
self.assertEqual(os.readlink(path_dst), "../file")
self.assertSameFile(self.path_src, path_dst)
def test_symlink_to_symlink(self):
path_dst = os.path.join(self.topdir, "symlink")
path_dst2 = os.path.join(self.topdir, "symlink-to-symlink")
# symlink 'symlink' -> 'file'
self.linker.symlink(self.path_src, path_dst, relative=True)
self.linker.symlink(path_dst, path_dst2)
class TestLinkerHardlink(TestLinkerBase):
def test_hardlink(self):
path_dst = os.path.join(self.topdir, "hardlink")
# hardlink 'file' to 'hardlink'
self.linker.hardlink(self.path_src, path_dst)
self.assertTrue(os.path.isfile(path_dst))
self.assertSameFile(self.path_src, path_dst)
# hardlink 'file' to 'foo/hardlink'
dir_dst = os.path.join(self.topdir, "foo")
os.makedirs(dir_dst)
path_dst = os.path.join(dir_dst, "hardlink")
self.linker.hardlink(self.path_src, path_dst)
self.assertTrue(os.path.isfile(path_dst))
self.assertSameFile(self.path_src, path_dst)
def test_hardlink_different_type(self):
# try to hardlink a file to existing dst with incompatible type
path_dst = os.path.join(self.topdir, "symlink")
os.symlink(self.path_src, path_dst)
self.assertRaises(OSError, self.linker.hardlink, self.path_src, path_dst)
class TestLinkerCopy(TestLinkerBase):
def test_copy(self):
path_dst = os.path.join(self.topdir, "b")
# copy 'file' to 'b'
self.linker.copy(self.path_src, path_dst)
self.assertTrue(os.path.isfile(path_dst))
self.assertDifferentFile(self.path_src, path_dst)
def test_copy_to_existing_file_with_different_content(self):
path_dst = os.path.join(self.topdir, "b")
helpers.touch(path_dst, 'xxx')
self.assertRaises(Exception, self.linker.copy, self.path_src, path_dst)
def test_copy_to_directory(self):
dir_dst = os.path.join(self.topdir, "foo")
os.makedirs(dir_dst)
path_dst = os.path.join(dir_dst, "bar")
self.linker.copy(self.path_src, path_dst)
self.assertTrue(os.path.isfile(path_dst))
self.assertDifferentFile(self.path_src, path_dst)
def test_copy_different_type(self):
# try to copy a file to existing dst with incompatible type
path_dst = os.path.join(self.topdir, "symlink")
os.symlink(self.path_src, path_dst)
self.assertRaises(OSError, self.linker.copy, self.path_src, path_dst)
class TestLinkerLink(TestLinkerBase):
def setUp(self):
# This will create following structure as a source.
#
# + src/
# + file1
# + file2
# + symlink2 (-> 'subdir')
# + symlink3 (-> 'does-not-exist')
# + hardlink1 (same file as 'file1')
# + subdir/
# + file3
# + symlink1 (-> '../file1')
#
# The destination paths are are similar, but in dst/ top-level dir.
super(TestLinkerLink, self).setUp()
self.src_dir = self.mkdir("src")
self.file1 = self.touch("src/file1", "file1")
self.file2 = self.touch("src/file2", "file2")
os.utime(self.file2, (-1, 2))
self.file3 = self.touch("src/subdir/file3", "file3")
os.utime(self.file3, (-1, 3))
os.utime(os.path.dirname(self.file3), (-1, 31))
self.symlink1 = os.path.join(self.topdir, "src/subdir/symlink1")
os.symlink("../file1", self.symlink1)
self.symlink2 = os.path.join(self.topdir, "src/symlink2")
os.symlink("subdir", self.symlink2)
self.symlink3 = os.path.join(self.topdir, "src/symlink3")
os.symlink("does-not-exist", self.symlink3)
self.hardlink1 = os.path.join(self.topdir, "src/hardlink1")
os.link(self.file1, self.hardlink1)
self.dst_dir = os.path.join(self.topdir, "dst")
self.dst_file1 = os.path.join(self.dst_dir, "file1")
self.dst_file2 = os.path.join(self.dst_dir, "file2")
self.dst_file3 = os.path.join(self.dst_dir, "subdir", "file3")
self.dst_symlink1 = os.path.join(self.dst_dir, "subdir", "symlink1")
self.dst_symlink2 = os.path.join(self.dst_dir, "symlink2")
self.dst_symlink3 = os.path.join(self.dst_dir, "symlink3")
self.dst_hardlink1 = os.path.join(self.dst_dir, "hardlink1")
def test_link_file(self):
dst = os.path.join(self.topdir, "hardlink")
self.linker.link(self.path_src, dst, link_type="hardlink")
self.assertTrue(self.same_inode(self.path_src, dst))
self.assertFalse(os.path.islink(dst))
def test_symlink_file(self):
dst = os.path.join(self.topdir, "symlink")
self.linker.link(self.path_src, dst, link_type="symlink")
self.assertEqual(os.readlink(dst), "file")
self.assertTrue(os.path.islink(dst))
def test_copy_file(self):
dst = os.path.join(self.topdir, "copy")
self.linker.link(self.path_src, dst, link_type="copy")
self.assertFalse(os.path.islink(dst))
self.assertFalse(self.same_inode(self.path_src, dst))
self.assertTrue(self.same_content(self.path_src, dst))
def test_hardlink_or_copy_file(self):
dst = os.path.join(self.topdir, "hardlink-or-copy")
self.linker.link(self.path_src, dst, link_type="hardlink-or-copy")
self.assertTrue(self.same_inode(self.path_src, dst))
self.assertFalse(os.path.islink(dst))
def test_link_file_test_mode(self):
self.linker = linker.Linker(logger=self.logger, test=True)
dst = os.path.join(self.topdir, "hardlink")
self.linker.link(self.path_src, dst, link_type="hardlink")
self.assertFalse(os.path.isdir(self.dst_dir))
self.assertEqual(len(self.logger.mock_calls), 1)
def test_symlink_file_test_mode(self):
self.linker = linker.Linker(logger=self.logger, test=True)
dst = os.path.join(self.topdir, "symlink")
self.linker.link(self.path_src, dst, link_type="symlink")
self.assertFalse(os.path.isdir(self.dst_dir))
self.assertEqual(len(self.logger.mock_calls), 1)
def test_copy_file_test_mode(self):
self.linker = linker.Linker(logger=self.logger, test=True)
dst = os.path.join(self.topdir, "copy")
self.linker.link(self.path_src, dst, link_type="copy")
self.assertFalse(os.path.isdir(self.dst_dir))
self.assertEqual(len(self.logger.mock_calls), 1)
def test_hardlink_or_copy_file_test_mode(self):
self.linker = linker.Linker(logger=self.logger, test=True)
dst = os.path.join(self.topdir, "hardlink-or-copy")
self.linker.link(self.path_src, dst, link_type="hardlink-or-copy")
self.assertFalse(os.path.isdir(self.dst_dir))
self.assertEqual(len(self.logger.mock_calls), 1)
def test_link_file_to_existing_destination(self):
self.assertRaises(OSError, self.linker.link,
self.file1, self.file2, link_type="hardlink")
def test_symlink_file_to_existing_destination(self):
self.assertRaises(OSError, self.linker.link,
self.file1, self.file2, link_type="symlink")
def test_copy_file_to_existing_destination(self):
self.assertRaises(OSError, self.linker.link,
self.file1, self.file2, link_type="copy")
def test_hardlink_or_copy_file_to_existing_destination(self):
self.assertRaises(OSError, self.linker.link,
self.file1, self.file2, link_type="hardlink-or-copy")
def test_link_dir_hardlink(self):
self.linker.link(self.src_dir, self.dst_dir, link_type="hardlink")
self.assertTrue(os.path.isfile(self.dst_file1))
self.assertTrue(self.same_inode(self.file1, self.dst_file1))
self.assertTrue(self.same_inode(self.file3, self.dst_file3))
self.assertSameStat(os.path.dirname(self.file3), os.path.dirname(self.dst_file3))
# always preserve symlinks
self.assertEqual(os.readlink(self.dst_symlink1), "../file1")
self.assertEqual(os.readlink(self.dst_symlink2), "subdir")
self.assertEqual(os.readlink(self.dst_symlink3), "does-not-exist")
def test_link_dir_copy(self):
self.linker.link(self.src_dir, self.dst_dir, link_type="copy")
self.assertTrue(os.path.isfile(self.dst_file1))
self.assertFalse(self.same_inode(self.file1, self.dst_file1))
self.assertFalse(self.same_inode(self.file3, self.dst_file3))
self.assertSameStat(os.path.dirname(self.file3), os.path.dirname(self.dst_file3))
# always preserve symlinks
self.assertEqual(os.readlink(self.dst_symlink1), "../file1")
self.assertEqual(os.readlink(self.dst_symlink2), "subdir")
self.assertEqual(os.readlink(self.dst_symlink3), "does-not-exist")
def test_link_dir_copy_test_mode(self):
# turn test mode on
self.linker = linker.Linker(logger=self.logger, test=True)
self.linker.link(self.src_dir, self.dst_dir, link_type="copy")
# dst_dir should not even exist
self.assertFalse(os.path.isdir(self.dst_dir))
def test_link_dir_symlink(self):
self.linker.link(self.src_dir, self.dst_dir, link_type="symlink")
self.assertTrue(os.path.isfile(self.dst_file1))
self.assertTrue(os.path.islink(self.dst_file1))
self.assertTrue(os.path.isdir(os.path.dirname(self.file3)))
# always preserve symlinks
self.assertEqual(os.readlink(self.dst_symlink1), "../file1")
self.assertEqual(os.readlink(self.dst_symlink2), "subdir")
self.assertEqual(os.readlink(self.dst_symlink3), "does-not-exist")
def test_link_dir_abspath_symlink(self):
self.linker.link(self.src_dir, self.dst_dir, link_type="abspath-symlink")
self.assertTrue(os.path.isfile(self.dst_file1))
self.assertTrue(os.path.islink(self.dst_file1))
self.assertEqual(os.readlink(self.dst_file1), self.file1)
self.assertSameStat(os.path.dirname(self.file3), os.path.dirname(self.dst_file3))
self.assertTrue(os.path.isdir(os.path.dirname(self.file3)))
# always preserve symlinks
self.assertEqual(os.readlink(self.dst_symlink1), "../file1")
self.assertEqual(os.readlink(self.dst_symlink2), "subdir")
self.assertEqual(os.readlink(self.dst_symlink3), "does-not-exist")
def test_scan_hardlink(self):
os.makedirs(self.dst_dir)
cache_dir = os.path.join(self.dst_dir, "cache")
os.makedirs(cache_dir)
cache_file = os.path.join(cache_dir, 'file1')
shutil.copy2(self.file1, cache_file)
self.linker.scan(self.dst_dir)
self.linker.link(self.src_dir, self.dst_dir, link_type="hardlink")
self.assertTrue(self.same_inode(self.dst_file1, cache_file))
def test_copy_preserve_hardlinks(self):
self.assertTrue(self.same_inode(self.file1, self.hardlink1))
self.linker.link(self.src_dir, self.dst_dir, link_type="copy")
self.assertTrue(self.same_inode(self.dst_file1, self.dst_hardlink1))
if __name__ == "__main__":
unittest.main()