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from __future__ import unicode_literals
import errno
import datetime
import os
import unittest
import tempfile
import shutil
import calendar
import fs.copy
from fs import open_fs
class TestCopy(unittest.TestCase):
def test_copy_fs(self):
for workers in (0, 1, 2, 4):
src_fs = open_fs("mem://")
src_fs.makedirs("foo/bar")
src_fs.makedirs("foo/empty")
src_fs.touch("test.txt")
src_fs.touch("foo/bar/baz.txt")
dst_fs = open_fs("mem://")
fs.copy.copy_fs(src_fs, dst_fs, workers=workers)
self.assertTrue(dst_fs.isdir("foo/empty"))
self.assertTrue(dst_fs.isdir("foo/bar"))
self.assertTrue(dst_fs.isfile("test.txt"))
def test_copy_value_error(self):
src_fs = open_fs("mem://")
dst_fs = open_fs("mem://")
with self.assertRaises(ValueError):
fs.copy.copy_fs(src_fs, dst_fs, workers=-1)
def test_copy_dir(self):
src_fs = open_fs("mem://")
src_fs.makedirs("foo/bar")
src_fs.makedirs("foo/empty")
src_fs.touch("test.txt")
src_fs.touch("foo/bar/baz.txt")
for workers in (0, 1, 2, 4):
with open_fs("mem://") as dst_fs:
fs.copy.copy_dir(src_fs, "/foo", dst_fs, "/", workers=workers)
self.assertTrue(dst_fs.isdir("bar"))
self.assertTrue(dst_fs.isdir("empty"))
self.assertTrue(dst_fs.isfile("bar/baz.txt"))
def test_copy_large(self):
data1 = b"foo" * 512 * 1024
data2 = b"bar" * 2 * 512 * 1024
data3 = b"baz" * 3 * 512 * 1024
data4 = b"egg" * 7 * 512 * 1024
with open_fs("temp://") as src_fs:
src_fs.writebytes("foo", data1)
src_fs.writebytes("bar", data2)
src_fs.makedir("dir1").writebytes("baz", data3)
src_fs.makedirs("dir2/dir3").writebytes("egg", data4)
for workers in (0, 1, 2, 4):
with open_fs("temp://") as dst_fs:
fs.copy.copy_fs(src_fs, dst_fs, workers=workers)
self.assertEqual(dst_fs.readbytes("foo"), data1)
self.assertEqual(dst_fs.readbytes("bar"), data2)
self.assertEqual(dst_fs.readbytes("dir1/baz"), data3)
self.assertEqual(dst_fs.readbytes("dir2/dir3/egg"), data4)
def test_copy_dir_on_copy(self):
src_fs = open_fs("mem://")
src_fs.touch("baz.txt")
on_copy_calls = []
def on_copy(*args):
on_copy_calls.append(args)
dst_fs = open_fs("mem://")
fs.copy.copy_dir(src_fs, "/", dst_fs, "/", on_copy=on_copy)
self.assertEqual(on_copy_calls, [(src_fs, "/baz.txt", dst_fs, "/baz.txt")])
def mkdirp(self, path):
# os.makedirs(path, exist_ok=True) only for python3.?
try:
os.makedirs(path)
except OSError as exc:
if exc.errno == errno.EEXIST and os.path.isdir(path):
pass
else:
raise
def _create_sandbox_dir(self, prefix="pyfilesystem2_sandbox_", home=None):
if home is None:
return tempfile.mkdtemp(prefix=prefix)
else:
sandbox_path = os.path.join(home, prefix)
self.mkdirp(sandbox_path)
return sandbox_path
def _touch(self, root, filepath):
# create abs filename
abs_filepath = os.path.join(root, filepath)
# create dir
dirname = os.path.dirname(abs_filepath)
self.mkdirp(dirname)
# touch file
with open(abs_filepath, "a"):
os.utime(
abs_filepath, None
) # update the mtime in case the file exists, same as touch
return abs_filepath
def _write_file(self, filepath, write_chars=1024):
with open(filepath, "w") as f:
f.write("1" * write_chars)
return filepath
def _delay_file_utime(self, filepath, delta_sec):
utcnow = datetime.datetime.utcnow()
unix_timestamp = calendar.timegm(utcnow.timetuple())
times = unix_timestamp + delta_sec, unix_timestamp + delta_sec
os.utime(filepath, times)
def test_copy_file_if_newer_same_fs(self):
src_fs = open_fs("mem://")
src_fs.makedir("foo2").touch("exists")
src_fs.makedir("foo1").touch("test1.txt")
src_fs.settimes(
"foo2/exists", datetime.datetime.utcnow() + datetime.timedelta(hours=1)
)
self.assertTrue(
fs.copy.copy_file_if_newer(
src_fs, "foo1/test1.txt", src_fs, "foo2/test1.txt.copy"
)
)
self.assertFalse(
fs.copy.copy_file_if_newer(src_fs, "foo1/test1.txt", src_fs, "foo2/exists")
)
self.assertTrue(src_fs.exists("foo2/test1.txt.copy"))
def test_copy_file_if_newer_dst_older(self):
try:
# create first dst ==> dst is older the src ==> file should be copied
dst_dir = self._create_sandbox_dir()
dst_file1 = self._touch(dst_dir, "file1.txt")
self._write_file(dst_file1)
src_dir = self._create_sandbox_dir()
src_file1 = self._touch(src_dir, "file1.txt")
self._write_file(src_file1)
# ensure src file is newer than dst, changing its modification time
self._delay_file_utime(src_file1, delta_sec=60)
src_fs = open_fs("osfs://" + src_dir)
dst_fs = open_fs("osfs://" + dst_dir)
self.assertTrue(dst_fs.exists("/file1.txt"))
copied = fs.copy.copy_file_if_newer(
src_fs, "/file1.txt", dst_fs, "/file1.txt"
)
self.assertTrue(copied)
self.assertTrue(dst_fs.exists("/file1.txt"))
finally:
shutil.rmtree(src_dir)
shutil.rmtree(dst_dir)
def test_copy_file_if_newer_dst_doesnt_exists(self):
try:
src_dir = self._create_sandbox_dir()
src_file1 = self._touch(src_dir, "file1.txt")
self._write_file(src_file1)
dst_dir = self._create_sandbox_dir()
src_fs = open_fs("osfs://" + src_dir)
dst_fs = open_fs("osfs://" + dst_dir)
copied = fs.copy.copy_file_if_newer(
src_fs, "/file1.txt", dst_fs, "/file1.txt"
)
self.assertTrue(copied)
self.assertTrue(dst_fs.exists("/file1.txt"))
finally:
shutil.rmtree(src_dir)
shutil.rmtree(dst_dir)
def test_copy_file_if_newer_dst_is_newer(self):
try:
src_dir = self._create_sandbox_dir()
src_file1 = self._touch(src_dir, "file1.txt")
self._write_file(src_file1)
dst_dir = self._create_sandbox_dir()
dst_file1 = self._touch(dst_dir, "file1.txt")
self._write_file(dst_file1)
src_fs = open_fs("osfs://" + src_dir)
dst_fs = open_fs("osfs://" + dst_dir)
self.assertTrue(dst_fs.exists("/file1.txt"))
copied = fs.copy.copy_file_if_newer(
src_fs, "/file1.txt", dst_fs, "/file1.txt"
)
self.assertEqual(copied, False)
finally:
shutil.rmtree(src_dir)
shutil.rmtree(dst_dir)
def test_copy_fs_if_newer_dst_older(self):
try:
# create first dst ==> dst is older the src ==> file should be copied
dst_dir = self._create_sandbox_dir()
dst_file1 = self._touch(dst_dir, "file1.txt")
self._write_file(dst_file1)
src_dir = self._create_sandbox_dir()
src_file1 = self._touch(src_dir, "file1.txt")
self._write_file(src_file1)
# ensure src file is newer than dst, changing its modification time
self._delay_file_utime(src_file1, delta_sec=60)
src_fs = open_fs("osfs://" + src_dir)
dst_fs = open_fs("osfs://" + dst_dir)
self.assertTrue(dst_fs.exists("/file1.txt"))
copied = []
def on_copy(src_fs, src_path, dst_fs, dst_path):
copied.append(dst_path)
fs.copy.copy_fs_if_newer(src_fs, dst_fs, on_copy=on_copy)
self.assertEqual(copied, ["/file1.txt"])
self.assertTrue(dst_fs.exists("/file1.txt"))
src_fs.close()
dst_fs.close()
finally:
shutil.rmtree(src_dir)
shutil.rmtree(dst_dir)
def test_copy_fs_if_newer_when_dst_doesnt_exists(self):
try:
src_dir = self._create_sandbox_dir()
src_file1 = self._touch(src_dir, "file1.txt")
self._write_file(src_file1)
src_file2 = self._touch(src_dir, "one_level_down" + os.sep + "file2.txt")
self._write_file(src_file2)
dst_dir = self._create_sandbox_dir()
src_fs = open_fs("osfs://" + src_dir)
dst_fs = open_fs("osfs://" + dst_dir)
copied = []
def on_copy(src_fs, src_path, dst_fs, dst_path):
copied.append(dst_path)
fs.copy.copy_fs_if_newer(src_fs, dst_fs, on_copy=on_copy)
self.assertEqual(copied, ["/file1.txt", "/one_level_down/file2.txt"])
self.assertTrue(dst_fs.exists("/file1.txt"))
self.assertTrue(dst_fs.exists("/one_level_down/file2.txt"))
src_fs.close()
dst_fs.close()
finally:
shutil.rmtree(src_dir)
shutil.rmtree(dst_dir)
def test_copy_fs_if_newer_dont_copy_when_dst_exists(self):
try:
# src is older than dst => no copy should be necessary
src_dir = self._create_sandbox_dir()
src_file1 = self._touch(src_dir, "file1.txt")
self._write_file(src_file1)
dst_dir = self._create_sandbox_dir()
dst_file1 = self._touch(dst_dir, "file1.txt")
self._write_file(dst_file1)
# ensure dst file is newer than src, changing its modification time
self._delay_file_utime(dst_file1, delta_sec=60)
src_fs = open_fs("osfs://" + src_dir)
dst_fs = open_fs("osfs://" + dst_dir)
self.assertTrue(dst_fs.exists("/file1.txt"))
copied = []
def on_copy(src_fs, src_path, dst_fs, dst_path):
copied.append(dst_path)
fs.copy.copy_fs_if_newer(src_fs, dst_fs, on_copy=on_copy)
self.assertEqual(copied, [])
self.assertTrue(dst_fs.exists("/file1.txt"))
src_fs.close()
dst_fs.close()
finally:
shutil.rmtree(src_dir)
shutil.rmtree(dst_dir)
def test_copy_dir_if_newer_one_dst_doesnt_exist(self):
try:
src_dir = self._create_sandbox_dir()
src_file1 = self._touch(src_dir, "file1.txt")
self._write_file(src_file1)
src_file2 = self._touch(src_dir, "one_level_down" + os.sep + "file2.txt")
self._write_file(src_file2)
dst_dir = self._create_sandbox_dir()
dst_file1 = self._touch(dst_dir, "file1.txt")
self._write_file(dst_file1)
# ensure dst file is newer than src, changing its modification time
self._delay_file_utime(dst_file1, delta_sec=60)
src_fs = open_fs("osfs://" + src_dir)
dst_fs = open_fs("osfs://" + dst_dir)
copied = []
def on_copy(src_fs, src_path, dst_fs, dst_path):
copied.append(dst_path)
fs.copy.copy_dir_if_newer(src_fs, "/", dst_fs, "/", on_copy=on_copy)
self.assertEqual(copied, ["/one_level_down/file2.txt"])
self.assertTrue(dst_fs.exists("/one_level_down/file2.txt"))
src_fs.close()
dst_fs.close()
finally:
shutil.rmtree(src_dir)
shutil.rmtree(dst_dir)
def test_copy_dir_if_newer_same_fs(self):
try:
src_dir = self._create_sandbox_dir()
src_file1 = self._touch(src_dir, "src" + os.sep + "file1.txt")
self._write_file(src_file1)
self._create_sandbox_dir(home=src_dir)
src_fs = open_fs("osfs://" + src_dir)
copied = []
def on_copy(src_fs, src_path, dst_fs, dst_path):
copied.append(dst_path)
fs.copy.copy_dir_if_newer(src_fs, "/src", src_fs, "/dst", on_copy=on_copy)
self.assertEqual(copied, ["/dst/file1.txt"])
self.assertTrue(src_fs.exists("/dst/file1.txt"))
src_fs.close()
finally:
shutil.rmtree(src_dir)
def test_copy_dir_if_newer_multiple_files(self):
try:
src_dir = self._create_sandbox_dir()
src_fs = open_fs("osfs://" + src_dir)
src_fs.makedirs("foo/bar")
src_fs.makedirs("foo/empty")
src_fs.touch("test.txt")
src_fs.touch("foo/bar/baz.txt")
dst_dir = self._create_sandbox_dir()
dst_fs = open_fs("osfs://" + dst_dir)
fs.copy.copy_dir_if_newer(src_fs, "/foo", dst_fs, "/")
self.assertTrue(dst_fs.isdir("bar"))
self.assertTrue(dst_fs.isdir("empty"))
self.assertTrue(dst_fs.isfile("bar/baz.txt"))
finally:
shutil.rmtree(src_dir)
shutil.rmtree(dst_dir)
if __name__ == "__main__":
unittest.main()
|
