Files
masto-rss/test_bot.py
aserper c8618ec3b7 Add comprehensive test suite with GitHub Actions CI/CD
- Refactor code into testable bot.py module with MastodonRSSBot class
- Create 20+ unit tests covering core functionality and edge cases
- Create 10+ integration tests for RSS parsing and Mastodon posting
- Add GitHub Actions workflow for automated testing
  - Unit tests on Python 3.10, 3.11, 3.12
  - Integration tests with mocked external services
  - Code quality checks (flake8, black, mypy)
  - Docker build validation
- Configure pytest with 80% minimum coverage requirement
- Add test dependencies in requirements-test.txt
- Update .gitignore to exclude test artifacts
- Add comprehensive TESTING.md documentation
- Add test status badge to README
- Maintain full backward compatibility with existing setup
2025-12-12 23:30:38 -05:00

346 lines
12 KiB
Python

"""Unit tests for Mastodon RSS Bot"""
import unittest
from unittest.mock import Mock, patch, mock_open, MagicMock
import tempfile
import os
from bot import MastodonRSSBot
import feedparser
class TestMastodonRSSBot(unittest.TestCase):
"""Test cases for MastodonRSSBot class"""
def setUp(self):
"""Set up test fixtures"""
self.test_config = {
'client_id': 'test_client_id',
'client_secret': 'test_client_secret',
'access_token': 'test_access_token',
'instance_url': 'https://mastodon.test',
'feed_url': 'https://example.com/feed.xml',
'toot_visibility': 'public',
'check_interval': 60,
'state_file': tempfile.mktemp()
}
def tearDown(self):
"""Clean up test files"""
if os.path.exists(self.test_config['state_file']):
os.remove(self.test_config['state_file'])
@patch('bot.Mastodon')
def test_bot_initialization(self, mock_mastodon):
"""Test bot initializes with correct configuration"""
bot = MastodonRSSBot(**self.test_config)
self.assertEqual(bot.feed_url, self.test_config['feed_url'])
self.assertEqual(bot.toot_visibility, self.test_config['toot_visibility'])
self.assertEqual(bot.check_interval, self.test_config['check_interval'])
self.assertEqual(bot.state_file, self.test_config['state_file'])
# Verify Mastodon client was initialized correctly
mock_mastodon.assert_called_once_with(
client_id=self.test_config['client_id'],
client_secret=self.test_config['client_secret'],
access_token=self.test_config['access_token'],
api_base_url=self.test_config['instance_url']
)
@patch('bot.Mastodon')
def test_load_processed_entries_empty(self, mock_mastodon):
"""Test loading processed entries from non-existent file returns empty set"""
bot = MastodonRSSBot(**self.test_config)
entries = bot.load_processed_entries()
self.assertEqual(entries, set())
self.assertIsInstance(entries, set)
@patch('bot.Mastodon')
def test_load_processed_entries_existing(self, mock_mastodon):
"""Test loading processed entries from existing file"""
# Create a temporary file with test data
test_urls = ['https://example.com/1', 'https://example.com/2', 'https://example.com/3']
with open(self.test_config['state_file'], 'w') as f:
f.write('\n'.join(test_urls))
bot = MastodonRSSBot(**self.test_config)
entries = bot.load_processed_entries()
self.assertEqual(entries, set(test_urls))
self.assertEqual(len(entries), 3)
@patch('bot.Mastodon')
def test_save_processed_entries(self, mock_mastodon):
"""Test saving processed entries to file"""
bot = MastodonRSSBot(**self.test_config)
test_entries = {'https://example.com/1', 'https://example.com/2', 'https://example.com/3'}
bot.save_processed_entries(test_entries)
# Verify file was created and contains correct data
self.assertTrue(os.path.exists(self.test_config['state_file']))
with open(self.test_config['state_file'], 'r') as f:
saved_entries = set(f.read().splitlines())
self.assertEqual(saved_entries, test_entries)
@patch('bot.Mastodon')
def test_save_processed_entries_creates_directory(self, mock_mastodon):
"""Test that saving entries creates directory if it doesn't exist"""
# Use a path with a non-existent directory
test_dir = tempfile.mkdtemp()
nested_path = os.path.join(test_dir, 'subdir', 'state.txt')
self.test_config['state_file'] = nested_path
bot = MastodonRSSBot(**self.test_config)
bot.save_processed_entries({'https://example.com/1'})
self.assertTrue(os.path.exists(nested_path))
# Cleanup
import shutil
shutil.rmtree(test_dir)
@patch('bot.Mastodon')
def test_format_status(self, mock_mastodon):
"""Test status formatting from feed entry"""
bot = MastodonRSSBot(**self.test_config)
entry = {
'title': 'Test Article',
'link': 'https://example.com/article'
}
status = bot.format_status(entry)
expected = "\nTest Article\n\nhttps://example.com/article"
self.assertEqual(status, expected)
@patch('bot.Mastodon')
def test_format_status_missing_title(self, mock_mastodon):
"""Test status formatting with missing title"""
bot = MastodonRSSBot(**self.test_config)
entry = {'link': 'https://example.com/article'}
status = bot.format_status(entry)
self.assertIn('Untitled', status)
self.assertIn('https://example.com/article', status)
@patch('bot.Mastodon')
def test_post_to_mastodon_success(self, mock_mastodon):
"""Test successful posting to Mastodon"""
mock_instance = Mock()
mock_mastodon.return_value = mock_instance
bot = MastodonRSSBot(**self.test_config)
result = bot.post_to_mastodon("Test status")
self.assertTrue(result)
mock_instance.status_post.assert_called_once_with(
"Test status",
visibility=self.test_config['toot_visibility']
)
@patch('bot.Mastodon')
def test_post_to_mastodon_failure(self, mock_mastodon):
"""Test handling of Mastodon posting failure"""
mock_instance = Mock()
mock_instance.status_post.side_effect = Exception("API Error")
mock_mastodon.return_value = mock_instance
bot = MastodonRSSBot(**self.test_config)
result = bot.post_to_mastodon("Test status")
self.assertFalse(result)
@patch('bot.feedparser.parse')
@patch('bot.Mastodon')
def test_parse_feed_success(self, mock_mastodon, mock_parse):
"""Test successful feed parsing"""
mock_feed = Mock()
mock_feed.entries = [{'title': 'Test', 'link': 'https://example.com'}]
mock_parse.return_value = mock_feed
bot = MastodonRSSBot(**self.test_config)
feed = bot.parse_feed()
self.assertIsNotNone(feed)
mock_parse.assert_called_once_with(self.test_config['feed_url'])
@patch('bot.feedparser.parse')
@patch('bot.Mastodon')
def test_parse_feed_with_exception(self, mock_mastodon, mock_parse):
"""Test feed parsing with exception"""
mock_parse.side_effect = Exception("Network error")
bot = MastodonRSSBot(**self.test_config)
feed = bot.parse_feed()
self.assertIsNone(feed)
@patch('bot.feedparser.parse')
@patch('bot.Mastodon')
def test_process_new_entries_no_entries(self, mock_mastodon, mock_parse):
"""Test processing when feed has no entries"""
mock_feed = Mock()
mock_feed.entries = []
mock_parse.return_value = mock_feed
bot = MastodonRSSBot(**self.test_config)
count = bot.process_new_entries()
self.assertEqual(count, 0)
@patch('bot.feedparser.parse')
@patch('bot.Mastodon')
def test_process_new_entries_all_new(self, mock_mastodon, mock_parse):
"""Test processing with all new entries"""
# Mock feed with 3 entries
mock_feed = Mock()
mock_feed.entries = [
{'title': 'Article 1', 'link': 'https://example.com/1'},
{'title': 'Article 2', 'link': 'https://example.com/2'},
{'title': 'Article 3', 'link': 'https://example.com/3'},
]
mock_parse.return_value = mock_feed
# Mock Mastodon instance
mock_instance = Mock()
mock_mastodon.return_value = mock_instance
bot = MastodonRSSBot(**self.test_config)
count = bot.process_new_entries()
self.assertEqual(count, 3)
self.assertEqual(mock_instance.status_post.call_count, 3)
# Verify entries were saved
saved_entries = bot.load_processed_entries()
self.assertEqual(len(saved_entries), 3)
@patch('bot.feedparser.parse')
@patch('bot.Mastodon')
def test_process_new_entries_some_processed(self, mock_mastodon, mock_parse):
"""Test processing with some entries already processed"""
# Pre-populate processed entries
processed = {'https://example.com/1', 'https://example.com/2'}
with open(self.test_config['state_file'], 'w') as f:
f.write('\n'.join(processed))
# Mock feed with 4 entries (2 old, 2 new)
mock_feed = Mock()
mock_feed.entries = [
{'title': 'Article 1', 'link': 'https://example.com/1'}, # Already processed
{'title': 'Article 2', 'link': 'https://example.com/2'}, # Already processed
{'title': 'Article 3', 'link': 'https://example.com/3'}, # New
{'title': 'Article 4', 'link': 'https://example.com/4'}, # New
]
mock_parse.return_value = mock_feed
# Mock Mastodon instance
mock_instance = Mock()
mock_mastodon.return_value = mock_instance
bot = MastodonRSSBot(**self.test_config)
count = bot.process_new_entries()
# Should only post 2 new entries
self.assertEqual(count, 2)
self.assertEqual(mock_instance.status_post.call_count, 2)
# Verify all 4 entries are now in processed list
saved_entries = bot.load_processed_entries()
self.assertEqual(len(saved_entries), 4)
@patch('bot.feedparser.parse')
@patch('bot.Mastodon')
def test_process_new_entries_skip_no_url(self, mock_mastodon, mock_parse):
"""Test that entries without URLs are skipped"""
mock_feed = Mock()
mock_feed.entries = [
{'title': 'Article without URL'}, # No link field
{'title': 'Article with URL', 'link': 'https://example.com/1'},
]
mock_parse.return_value = mock_feed
mock_instance = Mock()
mock_mastodon.return_value = mock_instance
bot = MastodonRSSBot(**self.test_config)
count = bot.process_new_entries()
# Should only process 1 entry (the one with URL)
self.assertEqual(count, 1)
self.assertEqual(mock_instance.status_post.call_count, 1)
@patch('bot.feedparser.parse')
@patch('bot.Mastodon')
def test_process_new_entries_posting_failure(self, mock_mastodon, mock_parse):
"""Test that failed posts don't get marked as processed"""
mock_feed = Mock()
mock_feed.entries = [
{'title': 'Article 1', 'link': 'https://example.com/1'},
]
mock_parse.return_value = mock_feed
# Mock Mastodon to fail
mock_instance = Mock()
mock_instance.status_post.side_effect = Exception("API Error")
mock_mastodon.return_value = mock_instance
bot = MastodonRSSBot(**self.test_config)
count = bot.process_new_entries()
# No entries should be counted as posted
self.assertEqual(count, 0)
# Entry should not be marked as processed
saved_entries = bot.load_processed_entries()
self.assertEqual(len(saved_entries), 0)
class TestMainEntry(unittest.TestCase):
"""Test cases for main.py entry point"""
@patch.dict(os.environ, {
'MASTODON_CLIENT_ID': 'test_id',
'MASTODON_CLIENT_SECRET': 'test_secret',
'MASTODON_ACCESS_TOKEN': 'test_token',
'MASTODON_INSTANCE_URL': 'https://mastodon.test',
'RSS_FEED_URL': 'https://example.com/feed.xml',
'TOOT_VISIBILITY': 'unlisted',
'CHECK_INTERVAL': '120',
'PROCESSED_ENTRIES_FILE': '/tmp/test_state.txt'
})
@patch('main.MastodonRSSBot')
def test_main_loads_environment_config(self, mock_bot_class):
"""Test that main() loads configuration from environment"""
from main import main
mock_bot_instance = Mock()
mock_bot_class.return_value = mock_bot_instance
# Call main (but it will try to run, so we need to handle that)
try:
main()
except Exception:
pass # Expected since we're mocking
# Verify bot was created with correct config
mock_bot_class.assert_called_once_with(
client_id='test_id',
client_secret='test_secret',
access_token='test_token',
instance_url='https://mastodon.test',
feed_url='https://example.com/feed.xml',
toot_visibility='unlisted',
check_interval=120,
state_file='/tmp/test_state.txt'
)
if __name__ == '__main__':
unittest.main()