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)
x/refs/?id=ac6fec05e4fe6b615651ea3e7c36f5a542cfa400'>refs</a><a class='active' href='/guix/log/gnu/packages/text-editors.scm'>log</a><a href='/guix/tree/gnu/packages/text-editors.scm?id=ac6fec05e4fe6b615651ea3e7c36f5a542cfa400'>tree</a><a href='/guix/commit/gnu/packages/text-editors.scm?id=ac6fec05e4fe6b615651ea3e7c36f5a542cfa400'>commit</a><a href='/guix/diff/gnu/packages/text-editors.scm?id=ac6fec05e4fe6b615651ea3e7c36f5a542cfa400'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages/text-editors.scm'>
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<div class='path'>path: <a href='/guix/log/?id=ac6fec05e4fe6b615651ea3e7c36f5a542cfa400'>root</a>/<a href='/guix/log/gnu?id=ac6fec05e4fe6b615651ea3e7c36f5a542cfa400'>gnu</a>/<a href='/guix/log/gnu/packages?id=ac6fec05e4fe6b615651ea3e7c36f5a542cfa400'>packages</a>/<a href='/guix/log/gnu/packages/text-editors.scm?id=ac6fec05e4fe6b615651ea3e7c36f5a542cfa400'>text-editors.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/packages/text-editors.scm?id=ac6fec05e4fe6b615651ea3e7c36f5a542cfa400&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2017-01-31 20:26:20 -0600'>2017-01-31</span></td><td><a href='/guix/commit/gnu/packages/text-editors.scm?id=f255a6db17f7bb446e9538cf466ef311b63a8fbf'>gnu: Add JOE.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/text-editors.scm (joe): New variable.
</span></span></td><td>Eric Bavier</td></tr>
<tr><td><span title='2017-01-27 01:28:36 +0100'>2017-01-27</span></td><td><a href='/guix/commit/gnu/packages/text-editors.scm?id=95757d899907ee7352acdecf0962d665804ceccd'>gnu: kakoune: Move reproducibility substitution to source snippet.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/text-editors.scm (kakoune)[arguments]: Move substitution to ...
[source]: ... here.

Signed-off-by: Marius Bakke &lt;mbakke@fastmail.com&gt;
</span></span></td><td>Carlo Zancanaro</td></tr>
<tr><td><span title='2017-01-26 22:12:13 +0100'>2017-01-26</span></td><td><a href='/guix/commit/gnu/packages/text-editors.scm?id=264ccbb31e0cffb2d71a465bec32adbdf7e20d06'>gnu: text-editors.scm: Fix imports.</a><span class='msg-avail'>...<span class='msg-tooltip'>This is a followup to 5613ea79fccc5a5befafea313cb81010c5f5a8dd.

* gnu/packages/text-editors.scm: Import (gnu packages terminals).
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2017-01-26 21:16:57 +0100'>2017-01-26</span></td><td><a href='/guix/commit/gnu/packages/text-editors.scm?id=5613ea79fccc5a5befafea313cb81010c5f5a8dd'>gnu: Add kakoune.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/text-editors.scm (kakoune): New variable.

Signed-off-by: Marius Bakke &lt;mbakke@fastmail.com&gt;
</span></span></td><td>Carlo Zancanaro</td></tr>
<tr><td><span title='2016-12-08 15:07:34 +0100'>2016-12-08</span></td><td><a href='/guix/commit/gnu/packages/text-editors.scm?id=a2c1dceadd2bf86ab17c70cd674bc98aec32a842'>gnu: Add vis.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/text-editors.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.

Co-authored-by: Marius Bakke &lt;mbakke@fastmail.com&gt;
</span></span></td><td>José Miguel Sánchez García</td></tr>