This test incorrectly assumes that the root user is always available.
However, in the build environment, the root user is not available.
Note that because the original file distributed in the release on PyPi
has lines ending in CRLF, those are retained in the diff below.

--- a/pyfakefs/tests/fake_filesystem_test.py	1969-12-31 16:00:00.000000000 -0800
+++ b/pyfakefs/tests/fake_filesystem_test.py	1969-12-31 16:00:00.000000000 -0800
@@ -1021,15 +1021,6 @@
             self.assertEqual(self.path.expanduser('~'),
                              self.os.environ['HOME'].replace('/', '!'))
 
-    @unittest.skipIf(TestCase.is_windows or TestCase.is_cygwin,
-                     'only tested on unix systems')
-    def test_expand_root(self):
-        if sys.platform == 'darwin':
-            roothome = '!var!root'
-        else:
-            roothome = '!root'
-        self.assertEqual(self.path.expanduser('~root'), roothome)
-
     def test_getsize_path_nonexistent(self):
         file_path = 'foo!bar!baz'
         self.assertRaises(os.error, self.path.getsize, file_path)
66b9cc7557255b567df5e35fbabe8'>refs</a><a class='active' href='/guix/log/gnu/bootloader.scm'>log</a><a href='/guix/tree/gnu/bootloader.scm?id=aa65bba301b66b9cc7557255b567df5e35fbabe8'>tree</a><a href='/guix/commit/gnu/bootloader.scm?id=aa65bba301b66b9cc7557255b567df5e35fbabe8'>commit</a><a href='/guix/diff/gnu/bootloader.scm?id=aa65bba301b66b9cc7557255b567df5e35fbabe8'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/bootloader.scm'>
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<div class='path'>path: <a href='/guix/log/?id=aa65bba301b66b9cc7557255b567df5e35fbabe8'>root</a>/<a href='/guix/log/gnu?id=aa65bba301b66b9cc7557255b567df5e35fbabe8'>gnu</a>/<a href='/guix/log/gnu/bootloader.scm?id=aa65bba301b66b9cc7557255b567df5e35fbabe8'>bootloader.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/bootloader.scm?id=aa65bba301b66b9cc7557255b567df5e35fbabe8&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-11-17 16:03:03 +0100'>2020-11-17</span></td><td><a href='/guix/commit/gnu/bootloader.scm?id=ede4117f7f18e118003f2599f5c8e985dfbdf9a5'>gnu: bootloader: efi-bootloader-chain: Allow multiple HOOKS.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/bootloader.scm (efi-bootloader-profile): Allow multiple HOOKS.
(efi-bootloader-chain): Allow multiple HOOKS.

Signed-off-by: Danny Milosavljevic &lt;dannym@scratchpost.org&gt;
</span></span></td><td>Stefan</td></tr>
<tr><td><span title='2020-11-16 10:33:18 +0100'>2020-11-16</span></td><td><a href='/guix/commit/gnu/bootloader.scm?id=74eeb11daee906cb012f10b6bb3afd254f9ea5c2'>gnu: bootloader: Support chain loading to an EFI bootloader.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/bootloader.scm (efi-bootloader-profile): New function.
(efi-bootloader-chain): New function.

Signed-off-by: Danny Milosavljevic &lt;dannym@scratchpost.org&gt;
</span></span></td><td>Stefan</td></tr>
<tr><td><span title='2020-06-08 13:51:18 +0200'>2020-06-08</span></td><td><a href='/guix/commit/gnu/bootloader.scm?id=21acd8d6c11b85d06c82b168807b35cb7d2d0adf'>bootloader: Extend `&lt;menu-entry&gt;' for multiboot.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/bootloader.scm (&lt;menu-entry&gt;)[multiboot-kernel,multiboot-arguments,
multiboot-modules]: New fields.
[linux,initrd]: Add default value '#f'.
(menu-entry-&gt;sexp, sexp-&gt;menu-entry): Support multiboot entry.
* doc/guix.texi (Bootloader Configuration): Document them.
</span></span></td><td>Jan (janneke) Nieuwenhuizen</td></tr>
<tr><td><span title='2020-05-29 08:37:13 +0200'>2020-05-29</span></td><td><a href='/guix/commit/gnu/bootloader.scm?id=7feefb3b82186be382725ac2d6b7e9f8953e4a83'>bootloader: Add 'disk-image-installer'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/bootloader.scm (&lt;bootloader&gt;)[disk-image-installer]: New field,
(bootloader-disk-image-installer): export it.
* gnu/bootloader/grub.scm (install-grub-disk-image): New procedure ...
(grub-bootloader): ... used as "disk-image-installer" here.
(grub-efi-bootloader): set "disk-image-installer" to #f.
* gnu/system/image.scm (root-partition?, find-root-partition): Move to
"Helpers" section.
(root-partition-index): New procedure.
(system-disk-image): Honor disk-image-installer, and
use it to install the bootloader directly on the disk-image, if supported.
</span></span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2019-08-30 01:33:45 +0200'>2019-08-30</span></td><td><a href='/guix/commit/gnu/bootloader.scm?id=a28cfee841e9c5ab179291d3065f1486fd065e7e'>system: Add 'bootloader-menu-entries' field to &lt;boot-parameters&gt;.</a><span class='msg-avail'>...<span class='msg-tooltip'>This allows us to keep track of the extra menu entries specified in the
OS configuration.

* gnu/system.scm (&lt;boot-parameters&gt;)[bootloader-menu-entries]: New field.
(read-boot-parameters): Initialize it.
(operating-system-boot-parameters): Likewise.
(operating-system-boot-parameters-file): Serialize it.
* gnu/bootloader.scm (menu-entry-&gt;sexp, sexp-&gt;menu-entry): New
procedures.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-08-30 01:33:45 +0200'>2019-08-30</span></td><td><a href='/guix/commit/gnu/bootloader.scm?id=ac9cd78ea9e6a3cf850b33fb2111b85e2bbf533d'>bootloader: Fix comment about 'menu-entries'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/bootloader.scm (&lt;bootloader-configuration&gt;)[menu-entries]: Fix
margin comment.
</span></span></td><td>Ludovic Courtès</td></tr>