Issue #12125: fixed the failures under Solaris due to improper test cleanup.

Lib/packaging/tests/test_create.py

@@ -31,11 +31,11 @@ def setUp(self):
             'doc': sys.prefix + '/share/doc/pyxfoil', }
 
     def tearDown(self):
-        super(CreateTestCase, self).tearDown()
         sys.stdin = self._stdin
         sys.stdout = self._stdout
         os.chdir(self._cwd)
         sysconfig.get_paths = self._old_get_paths
+        super(CreateTestCase, self).tearDown()
 
     def test_ask_yn(self):
         sys.stdin.write('y\n')

Lib/packaging/tests/test_manifest.py

@@ -26,6 +26,14 @@ class ManifestTestCase(support.TempdirManager,
                        support.LoggingCatcher,
                        unittest.TestCase):
 
+    def setUp(self):
+        super(ManifestTestCase, self).setUp()
+        self.cwd = os.getcwd()
+
+    def tearDown(self):
+        os.chdir(self.cwd)
+        super(ManifestTestCase, self).tearDown()
+
     def test_manifest_reader(self):
         tmpdir = self.mkdtemp()
         MANIFEST = os.path.join(tmpdir, 'MANIFEST.in')

Lib/packaging/tests/test_uninstall.py

@@ -36,8 +36,13 @@ def setUp(self):
         self.addCleanup(os.chdir, os.getcwd())
         self.addCleanup(enable_cache)
         self.root_dir = self.mkdtemp()
+        self.cwd = os.getcwd()
         disable_cache()
 
+    def tearDown(self):
+        os.chdir(self.cwd)
+        super(UninstallTestCase, self).tearDown()
+
     def run_setup(self, *args):
         # run setup with args
         args = ['run'] + list(args)

Misc/NEWS

@@ -153,6 +153,8 @@ Core and Builtins
 Library
 -------
 
+- Issue #12125: fixed the failures under Solaris due to improper test cleanup.
+
 - Issue #6501: os.device_encoding() returns None on Windows if the application
   has no console.