| from rich._null_file import NullFile | |
| def test_null_file(): | |
| file = NullFile() | |
| with file: | |
| assert file.write("abc") == 0 | |
| assert file.close() is None | |
| assert not file.isatty() | |
| assert file.read() == "" | |
| assert not file.readable() | |
| assert file.readline() == "" | |
| assert file.readlines() == [] | |
| assert file.seek(0, 0) == 0 | |
| assert not file.seekable() | |
| assert file.tell() == 0 | |
| assert file.truncate() == 0 | |
| assert file.writable() == False | |
| assert file.writelines([""]) is None | |
| assert next(file) == "" | |
| assert next(iter(file)) == "" | |
| assert file.fileno() == -1 | |
| assert file.flush() is None | |