[Telemetry] Update pyfakefs to latest revision.

tools/telemetry/third_party/pyfakefs/pyfakefs/fake_tempfile_test.py

 #! /usr/bin/env python
 #
 # Copyright 2009 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
 #
@@ skipping 60 matching lines @@
 
   def tearDown(self):
     fake_tempfile.logging = self.orig_logging
 
   def testTempFilename(self):
     # pylint: disable-msg=C6002
     # TODO: test that tempdir is init'ed
     filename_a = self.tempfile._TempFilename()
     # expect /tmp/tmp######
     self.assertTrue(filename_a.startswith('/tmp/tmp'))
-    self.assertEqual(14, len(filename_a))
+    self.assertLess(len('/tmp/tmpA'), len(filename_a))
 
     # see that random part changes
     filename_b = self.tempfile._TempFilename()
     self.assertTrue(filename_b.startswith('/tmp/tmp'))
-    self.assertEqual(14, len(filename_b))
+    self.assertLess(len('/tmp/tmpB'), len(filename_a))
     self.assertNotEqual(filename_a, filename_b)
 
   def testTempFilenameSuffix(self):
     """test tempfile._TempFilename(suffix=)."""
     filename = self.tempfile._TempFilename(suffix='.suffix')
     self.assertTrue(filename.startswith('/tmp/tmp'))
     self.assertTrue(filename.endswith('.suffix'))
-    self.assertEqual(21, len(filename))
+    self.assertLess(len('/tmp/tmpX.suffix'), len(filename))
 
   def testTempFilenamePrefix(self):
     """test tempfile._TempFilename(prefix=)."""
     filename = self.tempfile._TempFilename(prefix='prefix.')
     self.assertTrue(filename.startswith('/tmp/prefix.'))
-    self.assertEqual(18, len(filename))
+    self.assertLess(len('/tmp/prefix.X'), len(filename))
 
   def testTempFilenameDir(self):
     """test tempfile._TempFilename(dir=)."""
     filename = self.tempfile._TempFilename(dir='/dir')
     self.assertTrue(filename.startswith('/dir/tmp'))
-    self.assertEqual(14, len(filename))
+    self.assertLess(len('/dir/tmpX'), len(filename))
 
   def testTemporaryFile(self):
     obj = self.tempfile.TemporaryFile()
     self.assertEqual('<fdopen>', obj.name)
     self.assertTrue(isinstance(obj, io.StringIO))
 
   def testNamedTemporaryFile(self):
     obj = self.tempfile.NamedTemporaryFile()
     created_filenames = self.tempfile.FakeReturnedMktempValues()
     self.assertEqual(created_filenames[0], obj.name)
@@ skipping 71 matching lines @@
     self.assertRaises(NotImplementedError, self.tempfile.mktemp)
 
   def testTemplateGet(self):
     """verify tempfile.template still unimplemented."""
     self.assertRaises(NotImplementedError, getattr,
                       self.tempfile, 'template')
 
 
 if __name__ == '__main__':
   unittest.main()