Coverage for python/lsst/daf/butler/tests/deferredFormatter.py: 78%

9 statements  

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1# This file is part of daf_butler. 

2# 

3# Developed for the LSST Data Management System. 

4# This product includes software developed by the LSST Project 

5# (http://www.lsst.org). 

6# See the COPYRIGHT file at the top-level directory of this distribution 

7# for details of code ownership. 

8# 

9# This program is free software: you can redistribute it and/or modify 

10# it under the terms of the GNU General Public License as published by 

11# the Free Software Foundation, either version 3 of the License, or 

12# (at your option) any later version. 

13# 

14# This program is distributed in the hope that it will be useful, 

15# but WITHOUT ANY WARRANTY; without even the implied warranty of 

16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

17# GNU General Public License for more details. 

18# 

19# You should have received a copy of the GNU General Public License 

20# along with this program. If not, see <http://www.gnu.org/licenses/>. 

21 

22from __future__ import annotations 

23 

24__all__ = "DeferredFormatter" 

25 

26from typing import Any, Optional 

27 

28from ..core import Formatter 

29 

30 

31class DeferredFormatter(Formatter): 

32 """A test formatter that does not need to format anything and exists 

33 solely to be guaranteed to be loaded once by one test. 

34 

35 We want to ensure that the formatter system loads this on demand. 

36 """ 

37 

38 def read(self, component: Optional[str] = None) -> Any: 

39 raise NotImplementedError("Type does not support reading") 

40 

41 def write(self, inMemoryDataset: Any) -> str: 

42 raise NotImplementedError("Type does not support writing")