Fixed handling of trailing path separators in lstat

- fixes pytest-dev#342

pyfakefs/fake_filesystem.py

@@ -2013,7 +2013,7 @@ def lresolve(self, path):
         # remove trailing separator
         sep = self._path_separator(path)
         alt_sep = self._alternative_path_separator(path)
-        if path.endswith(sep) or (alt_sep and path.endswith(alt_sep)):
+        while path.endswith(sep) or (alt_sep and path.endswith(alt_sep)):
             path = path[:-1]
         path = self._original_path(path)
 

tests/fake_os_test.py

@@ -332,6 +332,15 @@ def test_lstat_size_windows(self):
         self.assertEqual(0,
                          self.os.lstat(link_path)[stat.ST_SIZE])
 
+    def test_lstat_trailing_sep(self):
+        # regression test for #342
+        stat = self.os.lstat(self.base_path)
+        self.assertEqual(stat, self.os.lstat(
+            self.base_path + self.filesystem.path_separator))
+        self.assertEqual(stat, self.os.lstat(
+            self.base_path + self.filesystem.path_separator
+            + self.filesystem.path_separator))
+
     @unittest.skipIf(sys.version_info < (3, 3),
                      'file descriptor as path new in Python 3.3')
     def test_lstat_uses_open_fd_as_path(self):