Catch errors for banned or private subreddits

tests/test_downloader.py

@@ -505,3 +505,15 @@ def test_check_user_existence_banned(
     downloader_mock.reddit_instance = reddit_instance
     with pytest.raises(BulkDownloaderException, match='is banned'):
         RedditDownloader._check_user_existence(downloader_mock, test_redditor_name)
+
+
+@pytest.mark.online
+@pytest.mark.reddit
+@pytest.mark.parametrize(('test_subreddit_name', 'expected_message'), (
+    ('donaldtrump', 'cannot be found'),
+    ('submitters', 'private and cannot be scraped')
+))
+def test_check_subreddit_status(test_subreddit_name: str, expected_message: str, reddit_instance: praw.Reddit):
+    test_subreddit = reddit_instance.subreddit(test_subreddit_name)
+    with pytest.raises(BulkDownloaderException, match=expected_message):
+        RedditDownloader._check_subreddit_status(test_subreddit)

tests/test_integration.py

@@ -255,6 +255,8 @@ def test_cli_archive_long(test_args: list[str], tmp_path: Path):
     ['--user', 'sdclhgsolgjeroij', '--submitted', '-L', 10],
     ['--user', 'me', '--upvoted', '-L', 10],
     ['--user', 'sdclhgsolgjeroij', '--upvoted', '-L', 10],
+    ['--subreddit', 'submitters', '-L', 10],  # Private subreddit
+    ['--subreddit', 'donaldtrump', '-L', 10],  # Banned subreddit
 ))
 def test_cli_download_soft_fail(test_args: list[str], tmp_path: Path):
     runner = CliRunner()