def test_create_new(self):
with namedTemporaryDir() as tmpdir:
target = os.path.join(tmpdir, "target")
link = os.path.join(tmpdir, "link")
fileUtils.atomic_symlink(target, link)
self.assertEqual(os.readlink(link), target)
self.assertFalse(os.path.exists(link + ".tmp"))
def test_create_new(self):
with namedTemporaryDir() as tmpdir:
target = os.path.join(tmpdir, "target")
link = os.path.join(tmpdir, "link")
fileUtils.atomic_symlink(target, link)
self.assertEqual(os.readlink(link), target)
self.assertFalse(os.path.exists(link + ".tmp"))
def test_atomic_symlink_create_new():
with namedTemporaryDir() as tmpdir:
target = os.path.join(tmpdir, "target")
link = os.path.join(tmpdir, "link")
fileUtils.atomic_symlink(target, link)
assert os.readlink(link) == target
assert not os.path.exists(link + ".tmp")
def test_atomic_symlink_error_isdir():
with namedTemporaryDir() as tmpdir:
target = os.path.join(tmpdir, "target")
link = os.path.join(tmpdir, "link")
os.mkdir(link)
with pytest.raises(OSError):
fileUtils.atomic_symlink(target, link)
def test_atomic_symlink_error_isfile():
with namedTemporaryDir() as tmpdir:
target = os.path.join(tmpdir, "target")
link = os.path.join(tmpdir, "link")
with open(link, 'w') as f:
f.write('data')
with pytest.raises(OSError):
fileUtils.atomic_symlink(target, link)
def test_replace_stale_temporary_link(self):
with namedTemporaryDir() as tmpdir:
target = os.path.join(tmpdir, "target")
link = os.path.join(tmpdir, "link")
tmp_link = link + ".tmp"
fileUtils.atomic_symlink("stale", tmp_link)
fileUtils.atomic_symlink(target, link)
self.assertEqual(os.readlink(link), target)
self.assertFalse(os.path.exists(tmp_link))
def test_replace_stale_temporary_link(self):
with namedTemporaryDir() as tmpdir:
target = os.path.join(tmpdir, "target")
link = os.path.join(tmpdir, "link")
tmp_link = link + ".tmp"
fileUtils.atomic_symlink("stale", tmp_link)
fileUtils.atomic_symlink(target, link)
self.assertEqual(os.readlink(link), target)
self.assertFalse(os.path.exists(tmp_link))
def test_atomic_symlink_replace_stale_temporary():
with namedTemporaryDir() as tmpdir:
target = os.path.join(tmpdir, "target")
link = os.path.join(tmpdir, "link")
tmp_link = link + ".tmp"
fileUtils.atomic_symlink("stale", tmp_link)
fileUtils.atomic_symlink(target, link)
assert os.readlink(link) == target
assert not os.path.exists(tmp_link)
def test_keep_current(self):
with namedTemporaryDir() as tmpdir:
target = os.path.join(tmpdir, "target")
link = os.path.join(tmpdir, "link")
fileUtils.atomic_symlink(target, link)
current = os.lstat(link)
fileUtils.atomic_symlink(target, link)
new = os.lstat(link)
self.assertEqual(current, new)
self.assertFalse(os.path.exists(link + ".tmp"))
def test_keep_current(self):
with namedTemporaryDir() as tmpdir:
target = os.path.join(tmpdir, "target")
link = os.path.join(tmpdir, "link")
fileUtils.atomic_symlink(target, link)
current = os.lstat(link)
fileUtils.atomic_symlink(target, link)
new = os.lstat(link)
self.assertEqual(current, new)
self.assertFalse(os.path.exists(link + ".tmp"))
