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# Copyright 2015 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import contextlib
import os
import shutil
import time
from tensorflow.python.platform import gfile
from tensorflow.python.platform import googletest
from tensorflow.python.platform import tf_logging as logging
class _BaseTest(object):
@property
def tmp(self):
return self._tmp_dir
def setUp(self):
self._orig_dir = os.getcwd()
self._tmp_dir = googletest.GetTempDir() + "/"
try:
os.makedirs(self._tmp_dir)
except OSError:
pass # Directory already exists
def tearDown(self):
try:
shutil.rmtree(self._tmp_dir)
except OSError:
logging.warn("[%s] Post-test directory cleanup failed: %s",
self, self._tmp_dir)
class _GFileBaseTest(_BaseTest):
@property
def gfile(self):
raise NotImplementedError("Do not use _GFileBaseTest directly.")
def testWith(self):
with self.gfile(self.tmp + "test_with", "w") as fh:
fh.write("hi")
with self.gfile(self.tmp + "test_with", "r") as fh:
self.assertEqual(fh.read(), "hi")
def testSizeAndTellAndSeek(self):
with self.gfile(self.tmp + "test_tell", "w") as fh:
fh.write("".join(["0"] * 1000))
with self.gfile(self.tmp + "test_tell", "r") as fh:
self.assertEqual(1000, fh.Size())
self.assertEqual(0, fh.tell())
fh.seek(0, 2)
self.assertEqual(1000, fh.tell())
fh.seek(0)
self.assertEqual(0, fh.tell())
def testReadAndWritelines(self):
with self.gfile(self.tmp + "test_writelines", "w") as fh:
fh.writelines(["%d\n" % d for d in range(10)])
with self.gfile(self.tmp + "test_writelines", "r") as fh:
self.assertEqual(["%d\n" % x for x in range(10)], fh.readlines())
def testWriteAndTruncate(self):
with self.gfile(self.tmp + "test_truncate", "w") as fh:
fh.write("ababab")
with self.gfile(self.tmp + "test_truncate", "a+") as fh:
fh.seek(0, 2)
fh.write("hjhjhj")
with self.gfile(self.tmp + "test_truncate", "a+") as fh:
self.assertEqual(fh.Size(), 12)
fh.truncate(6)
with self.gfile(self.tmp + "test_truncate", "r") as fh:
self.assertEqual(fh.read(), "ababab")
def testErrors(self):
self.assertRaises(
IOError, lambda: self.gfile(self.tmp + "doesnt_exist", "r"))
with self.gfile(self.tmp + "test_error", "w") as fh:
# Raises FileError inside Google and ValueError outside, so we
# can only test for Exception.
self.assertRaises(Exception, lambda: fh.seek(-1))
# test_error now exists, we can read from it:
with self.gfile(self.tmp + "test_error", "r") as fh:
self.assertRaises(IOError, lambda: fh.write("ack"))
fh = self.gfile(self.tmp + "test_error", "w")
self.assertFalse(fh.closed)
fh.close()
self.assertTrue(fh.closed)
self.assertRaises(ValueError, lambda: fh.write("ack"))
def testIteration(self):
with self.gfile(self.tmp + "test_iter", "w") as fh:
fh.writelines(["a\n", "b\n", "c\n"])
with self.gfile(self.tmp + "test_iter", "r") as fh:
lines = list(fh)
self.assertEqual(["a\n", "b\n", "c\n"], lines)
class GFileTest(_GFileBaseTest, googletest.TestCase):
@property
def gfile(self):
return gfile.GFile
class FastGFileTest(_GFileBaseTest, googletest.TestCase):
@property
def gfile(self):
return gfile.FastGFile
class FunctionTests(_BaseTest, googletest.TestCase):
def testExists(self):
self.assertFalse(gfile.Exists(self.tmp + "test_exists"))
with gfile.GFile(self.tmp + "test_exists", "w"):
pass
self.assertTrue(gfile.Exists(self.tmp + "test_exists"))
def testMkDirsGlobAndRmDirs(self):
self.assertFalse(gfile.Exists(self.tmp + "test_dir"))
gfile.MkDir(self.tmp + "test_dir")
self.assertTrue(gfile.Exists(self.tmp + "test_dir"))
gfile.RmDir(self.tmp + "test_dir")
self.assertFalse(gfile.Exists(self.tmp + "test_dir"))
gfile.MakeDirs(self.tmp + "test_dir/blah0")
gfile.MakeDirs(self.tmp + "test_dir/blah1")
self.assertEqual([self.tmp + "test_dir/blah0", self.tmp + "test_dir/blah1"],
sorted(gfile.Glob(self.tmp + "test_dir/*")))
gfile.DeleteRecursively(self.tmp + "test_dir")
self.assertFalse(gfile.Exists(self.tmp + "test_dir"))
@contextlib.contextmanager
def _working_directory(self, wd):
original_cwd = os.getcwd()
os.chdir(wd)
try:
yield
finally:
os.chdir(original_cwd)
def testMakeDirsWithEmptyString(self):
gfile.MakeDirs(self.tmp + "test_dir")
with self._working_directory(self.tmp + "test_dir"):
gfile.MakeDirs("")
# Should succeed because MakeDirs("") is a no-op.
gfile.RmDir(self.tmp + "test_dir")
def testErrors(self):
self.assertRaises(
OSError, lambda: gfile.RmDir(self.tmp + "dir_doesnt_exist"))
self.assertRaises(
OSError, lambda: gfile.Remove(self.tmp + "file_doesnt_exist"))
gfile.MkDir(self.tmp + "error_dir")
with gfile.GFile(self.tmp + "error_dir/file", "w"):
pass # Create file
self.assertRaises(
OSError, lambda: gfile.Remove(self.tmp + "error_dir"))
self.assertRaises(
OSError, lambda: gfile.RmDir(self.tmp + "error_dir"))
self.assertTrue(gfile.Exists(self.tmp + "error_dir"))
gfile.DeleteRecursively(self.tmp + "error_dir")
self.assertFalse(gfile.Exists(self.tmp + "error_dir"))
def testStat(self):
with gfile.GFile(self.tmp + "test_stat", "w"):
pass
creation_time = time.time()
statinfo = gfile.Stat(self.tmp + "test_stat")
# Test the modification timestamp is within 20 seconds of closing the file.
self.assertLessEqual(statinfo.mtime, creation_time + 10)
self.assertGreaterEqual(statinfo.mtime, creation_time - 10)
def testRename(self):
gfile.MkDir(self.tmp + "dir1")
gfile.MkDir(self.tmp + "dir2")
with gfile.GFile(self.tmp + "file1", "w"):
pass # Create file
with gfile.GFile(self.tmp + "file2", "w"):
pass # Create file
# Dest file already exists, overwrite=False (default).
self.assertRaises(
OSError, lambda: gfile.Rename(self.tmp + "file1", self.tmp + "file2"))
gfile.Rename(self.tmp + "file1", self.tmp + "file2", overwrite=True)
self.assertFalse(gfile.Exists(self.tmp + "file1"))
gfile.Rename(self.tmp + "file2", self.tmp + "newfile")
self.assertTrue(gfile.Exists(self.tmp + "newfile"))
gfile.Rename(self.tmp + "dir1", self.tmp + "dir2")
self.assertFalse(gfile.Exists(self.tmp + "dir1"))
gfile.Rename(self.tmp + "dir2", self.tmp + "newdir")
self.assertTrue(gfile.Exists(self.tmp + "newdir"))
def testCopy(self):
gfile.MkDir(self.tmp + "dir1")
gfile.MkDir(self.tmp + "dir2")
with gfile.GFile(self.tmp + "dir1/file1", "w"):
pass # Create file
with gfile.GFile(self.tmp + "dir2/file2", "w"):
pass # Create file
# Dest file already exists, overwrite=False (default).
self.assertRaises(
OSError, lambda: gfile.Copy(self.tmp + "dir1/file1",
self.tmp + "dir2/file2"))
# Overwrite succeeds
gfile.Copy(self.tmp + "dir1/file1", self.tmp + "dir2/file2",
overwrite=True)
self.assertTrue(gfile.Exists(self.tmp + "dir2/file2"))
# Normal copy.
gfile.Rename(self.tmp + "dir1/file1", self.tmp + "dir2/file1")
self.assertTrue(gfile.Exists(self.tmp + "dir2/file1"))
# Normal copy to non-existent dir
self.assertRaises(OSError,
lambda: gfile.Rename(self.tmp + "dir1/file1",
self.tmp + "newdir/file1"))
def testOpen(self):
with gfile.Open(self.tmp + "test_open", "wb") as f:
f.write(b"foo")
with gfile.Open(self.tmp + "test_open") as f:
result = f.readlines()
self.assertEqual(["foo"], result)
if __name__ == "__main__":
googletest.main()
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