add non-ascii ACL test (linux)

still failing as the tested code does not yet work with non-ascii ACLs

borg/testsuite/platform.py

@@ -72,6 +72,31 @@ class PlatformLinuxTestCase(BaseTestCase):
         self.assert_equal(self.get_acl(self.tmpdir)[b'acl_access'], ACCESS_ACL)
         self.assert_equal(self.get_acl(self.tmpdir)[b'acl_default'], DEFAULT_ACL)
 
+    def test_non_ascii_acl(self):
+        # Testing non-ascii ACL processing to see whether our code is robust.
+        # I have no idea whether non-ascii ACLs are allowed by the standard,
+        # but in practice they seem to be out there and must not make our code explode.
+        file = tempfile.NamedTemporaryFile()
+        self.assert_equal(self.get_acl(file.name), {})
+        nothing_special = 'user::rw-\ngroup::r--\nmask::rw-\nother::---\n'.encode('ascii')
+        user_entry = 'user:übel:rw-:666'.encode('utf-8')
+        user_entry_numeric = 'user:666:rw-:666'.encode('ascii')
+        group_entry = 'group:übel:rw-:666'.encode('utf-8')
+        group_entry_numeric = 'group:666:rw-:666'.encode('ascii')
+        acl = b'\n'.join([nothing_special, user_entry, group_entry])
+        self.set_acl(file.name, access=acl, numeric_owner=False)
+        acl_access = self.get_acl(file.name)[b'acl_access']
+        self.assert_in(user_entry, acl_access)
+        self.assert_in(group_entry, acl_access)
+        acl_access_numeric = self.get_acl(file.name, numeric_owner=True)[b'acl_access']
+        self.assert_in(user_entry_numeric, acl_access_numeric)
+        self.assert_in(group_entry_numeric, acl_access_numeric)
+        file2 = tempfile.NamedTemporaryFile()
+        self.set_acl(file2.name, access=acl, numeric_owner=True)
+        acl_access = self.get_acl(file2.name)[b'acl_access']
+        self.assert_in(user_entry_numeric, acl_access)
+        self.assert_in(group_entry_numeric, acl_access)
+
 
 @unittest.skipUnless(sys.platform.startswith('darwin'), 'OS X only test')
 @unittest.skipIf(fakeroot_detected(), 'not compatible with fakeroot')