def _get_deferred_open_file(self, fileobj, start_byte):
fileobj = DeferredOpenFile(fileobj, start_byte)
fileobj.OPEN_METHOD = self._osutil.open
return fileobj
def test_instantiation_does_not_open_file(self):
deferred_open_file = DeferredOpenFile(self.filename)
self.open_called_count = 0
deferred_open_file.OPEN_METHOD = self.counting_open_method
self.assertEqual(self.open_called_count, 0)
