Pyfakefs 3.6 test failures

[scarabeusiv]

When updating pyfakefs from 3.5.8 to 3.6 release on openSUSE 3 of the tests fail:

[   16s] ======================================================================
[   16s] FAIL: test_append_mode_tell_linux_windows (pyfakefs.tests.fake_os_test.RealOsModuleTest)
[   16s] ----------------------------------------------------------------------
[   16s] Traceback (most recent call last):
[   16s]   File "/home/abuild/rpmbuild/BUILD/pyfakefs-3.6/pyfakefs/tests/fake_os_test.py", line 1224, in test_append_mode_tell_linux_windows
[   16s]     self.check_append_mode_tell_after_truncate(tell_result)
[   16s]   File "/home/abuild/rpmbuild/BUILD/pyfakefs-3.6/pyfakefs/tests/fake_os_test.py", line 1216, in check_append_mode_tell_after_truncate
[   16s]     self.assertEqual(tell_result, f1.tell())
[   16s] AssertionError: 5 != 7L
[   16s] 
[   16s] ======================================================================
[   16s] FAIL: test_fdatasync_pass (pyfakefs.tests.fake_os_test.RealOsModuleTest)
[   16s] ----------------------------------------------------------------------
[   16s] Traceback (most recent call last):
[   16s]   File "/home/abuild/rpmbuild/BUILD/pyfakefs-3.6/pyfakefs/tests/fake_os_test.py", line 1768, in test_fdatasync_pass
[   16s]     self.os.fdatasync, test_fd + 10)
[   16s]   File "/home/abuild/rpmbuild/BUILD/pyfakefs-3.6/pyfakefs/tests/test_utils.py", line 73, in assert_raises_os_error
[   16s]     self.assertEqual(subtype, exc.errno)
[   16s] AssertionError: 9 != 22
[   16s] 
[   16s] ======================================================================
[   16s] FAIL: test_fsync_pass_posix (pyfakefs.tests.fake_os_test.RealOsModuleTest)
[   16s] ----------------------------------------------------------------------
[   16s] Traceback (most recent call last):
[   16s]   File "/home/abuild/rpmbuild/BUILD/pyfakefs-3.6/pyfakefs/tests/fake_os_test.py", line 1740, in test_fsync_pass_posix
[   16s]     self.os.fsync, test_fd + 10)
[   16s]   File "/home/abuild/rpmbuild/BUILD/pyfakefs-3.6/pyfakefs/tests/test_utils.py", line 73, in assert_raises_os_error
[   16s]     self.assertEqual(subtype, exc.errno)
[   16s] AssertionError: 9 != 22
[   16s] 
[   16s] ----------------------------------------------------------------------

The tests fail the same way both on py2 and py3.

This is bit problematic for us now as we need 3.6 because we prepare update for pyton 3.8 (where the old 3.5.8 does not work).

[mrbean-bremen]

These are real OS tests that actually should not run in your case. I seem to have commented out the relevant code that disabled them and accidentally checked that in - sorry for that.
I will correct this tonight and probably make a new dot release.

[mrbean-bremen]

Ok, should work in 3.6.1 release.