Use assert_has_calls for compatibility with Python 3.5 in fs.wrap

Author: althonos

tests/test_wrap.py

@@ -177,7 +177,7 @@ def test_scandir(self):
         ]
         with mock.patch.object(self.fs, "scandir", wraps=self.fs.scandir) as scandir:
             self.assertEqual(sorted(self.cached.scandir("/"), key=key), expected)
-            scandir.assert_called()
+            scandir.assert_has_calls([mock.call('/', namespaces=None, page=None)])
         with mock.patch.object(self.fs, "scandir", wraps=self.fs.scandir) as scandir:
             self.assertEqual(sorted(self.cached.scandir("/"), key=key), expected)
             scandir.assert_not_called()
@@ -187,7 +187,7 @@ def test_isdir(self):
             self.assertTrue(self.cached.isdir("foo"))
             self.assertFalse(self.cached.isdir("egg"))  # is file
             self.assertFalse(self.cached.isdir("spam"))  # doesn't exist
-            scandir.assert_called()
+            scandir.assert_has_calls([mock.call('/', namespaces=None, page=None)])
         with mock.patch.object(self.fs, "scandir", wraps=self.fs.scandir) as scandir:
             self.assertTrue(self.cached.isdir("foo"))
             self.assertFalse(self.cached.isdir("egg"))