feat: multi-Oracle server support with runtime switching
Complete implementation of multi-server Oracle database support: Backend: - Multi-pool Oracle with lazy loading per server - Email-to-server cache for automatic server discovery - JWT tokens include server_id claim - /auth/check-identity and /auth/check-email endpoints - /auth/my-servers endpoint for listing user's accessible servers - Server switch with password re-authentication Frontend: - New ServerSelector component for header dropdown - Multi-step login flow (identity → server → password) - Server switching from header with password modal - Mobile drawer menu with server selection - Dark mode support for all new components - URL bookmark support with ?server= query param Scripts: - Unified start.sh replacing start-prod.sh/start-test.sh - Unified ssh-tunnel.sh with multi-server support - Updated status.sh for new architecture Tests: - E2E tests for multi-server and single-server login flows - Backend unit tests for all new endpoints - Oracle multi-pool integration tests Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Claude Agent
375
tests/backend/test_email_server_cache.py
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375
tests/backend/test_email_server_cache.py
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"""
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Unit tests for EmailServerCache - Multi-Oracle email-to-server mapping cache.
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Tests cover:
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- Cache building from multiple Oracle servers
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- get_servers_for_email() functionality
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- Auto-refresh mechanism
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- Graceful handling of server failures
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- Edge cases (empty email, email not found)
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US-003: Auto-Discovery Email-Server Cache
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"""
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import asyncio
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import pytest
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from unittest.mock import MagicMock, patch, AsyncMock
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from datetime import datetime, timedelta
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import sys
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import os
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# Add project paths
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sys.path.insert(0, os.path.join(os.path.dirname(__file__), '../../shared'))
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sys.path.insert(0, os.path.join(os.path.dirname(__file__), '../../'))
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class MockOracleServerConfig:
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"""Mock Oracle server configuration for testing."""
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def __init__(self, server_id: str, name: str):
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self.id = server_id
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self.name = name
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self.host = f"{server_id}.example.com"
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self.port = 1521
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self.user = "test_user"
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self.password = "test_pass"
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self.sid = "TESTDB"
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self.service_name = None
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class MockCursor:
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"""Mock Oracle cursor that returns configured email results."""
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def __init__(self, emails: list):
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self.emails = emails
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self._result_index = 0
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def __enter__(self):
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return self
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def __exit__(self, exc_type, exc_val, exc_tb):
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pass
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def execute(self, query, params=None):
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pass
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def fetchall(self):
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return [(email,) for email in self.emails]
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class MockConnection:
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"""Mock Oracle connection that returns configured cursor."""
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def __init__(self, emails: list):
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self.emails = emails
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def cursor(self):
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return MockCursor(self.emails)
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def close(self):
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pass
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@pytest.fixture
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def fresh_email_cache():
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"""Create a fresh EmailServerCache instance for each test."""
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from auth.email_server_cache import EmailServerCache
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# Reset singleton
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EmailServerCache._instance = None
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cache = EmailServerCache()
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yield cache
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# Cleanup
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cache.clear_cache()
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if cache._refresh_task and not cache._refresh_task.done():
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cache._refresh_task.cancel()
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EmailServerCache._instance = None
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class TestGetServersForEmail:
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"""Tests for get_servers_for_email() functionality."""
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def test_email_not_found_returns_empty_list(self, fresh_email_cache):
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"""Test that email not in cache returns empty list, not error."""
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fresh_email_cache._cache = {
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"known@example.com": ["server_a"]
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}
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fresh_email_cache._initialized = True
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# Should return empty list, NOT raise exception
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result = fresh_email_cache.get_servers_for_email("unknown@example.com")
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assert result == []
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def test_email_case_insensitive(self, fresh_email_cache):
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"""Test that email lookup is case-insensitive."""
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fresh_email_cache._cache = {
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"user@example.com": ["server_a"]
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}
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fresh_email_cache._initialized = True
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# All these should find the same entry
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assert fresh_email_cache.get_servers_for_email("USER@example.com") == ["server_a"]
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assert fresh_email_cache.get_servers_for_email("User@Example.COM") == ["server_a"]
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assert fresh_email_cache.get_servers_for_email("user@example.com") == ["server_a"]
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def test_empty_email_returns_empty_list(self, fresh_email_cache):
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"""Test that empty or None email returns empty list."""
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fresh_email_cache._initialized = True
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assert fresh_email_cache.get_servers_for_email("") == []
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assert fresh_email_cache.get_servers_for_email(None) == []
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def test_email_with_whitespace(self, fresh_email_cache):
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"""Test that email with leading/trailing whitespace is trimmed."""
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fresh_email_cache._cache = {
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"user@example.com": ["server_a"]
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}
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fresh_email_cache._initialized = True
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assert fresh_email_cache.get_servers_for_email(" user@example.com ") == ["server_a"]
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def test_returns_copy_not_reference(self, fresh_email_cache):
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"""Test that get_servers_for_email returns a copy to prevent modification."""
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fresh_email_cache._cache = {
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"user@example.com": ["server_a", "server_b"]
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}
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fresh_email_cache._initialized = True
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result = fresh_email_cache.get_servers_for_email("user@example.com")
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result.append("server_c") # Modify the result
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# Original cache should be unchanged
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assert fresh_email_cache.get_servers_for_email("user@example.com") == ["server_a", "server_b"]
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class TestAutoRefresh:
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"""Tests for automatic cache refresh."""
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def test_refresh_interval_configurable(self, fresh_email_cache):
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"""Test that refresh interval can be configured."""
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fresh_email_cache.set_refresh_interval(30) # 30 minutes
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stats = fresh_email_cache.get_cache_stats()
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assert stats['refresh_interval_minutes'] == 30
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class TestCacheStats:
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"""Tests for cache statistics."""
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def test_stats_when_not_initialized(self, fresh_email_cache):
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"""Test stats before cache is initialized."""
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stats = fresh_email_cache.get_cache_stats()
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assert stats['initialized'] is False
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assert stats['total_emails'] == 0
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assert stats['last_refresh'] is None
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def test_stats_after_initialization(self, fresh_email_cache):
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"""Test stats after cache is initialized."""
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fresh_email_cache._cache = {
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"user1@example.com": ["server_a"],
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"user2@example.com": ["server_a", "server_b"],
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"user3@example.com": ["server_b"],
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}
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fresh_email_cache._initialized = True
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fresh_email_cache._last_refresh = datetime.now()
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stats = fresh_email_cache.get_cache_stats()
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assert stats['initialized'] is True
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assert stats['total_emails'] == 3
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assert stats['multi_server_count'] == 1 # user2 on 2 servers
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assert stats['last_refresh'] is not None
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def test_server_distribution_stats(self, fresh_email_cache):
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"""Test server distribution in stats."""
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fresh_email_cache._cache = {
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"user1@example.com": ["server_a"],
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"user2@example.com": ["server_a"],
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"user3@example.com": ["server_a", "server_b"],
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"user4@example.com": ["server_a", "server_b", "server_c"],
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}
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fresh_email_cache._initialized = True
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fresh_email_cache._last_refresh = datetime.now()
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stats = fresh_email_cache.get_cache_stats()
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# 2 emails on 1 server, 1 email on 2 servers, 1 email on 3 servers
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assert stats['server_distribution'] == {1: 2, 2: 1, 3: 1}
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class TestClearCache:
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"""Tests for cache clearing."""
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def test_clear_cache_resets_state(self, fresh_email_cache):
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"""Test that clear_cache resets all state."""
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fresh_email_cache._cache = {"user@example.com": ["server_a"]}
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fresh_email_cache._initialized = True
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fresh_email_cache._last_refresh = datetime.now()
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fresh_email_cache.clear_cache()
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assert fresh_email_cache._cache == {}
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assert fresh_email_cache._initialized is False
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assert fresh_email_cache._last_refresh is None
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class TestEmailServerCacheIntegration:
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"""Integration tests for cache building (require mocking external dependencies)."""
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@pytest.mark.asyncio
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async def test_build_cache_with_mock_servers(self, fresh_email_cache):
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"""Test building cache with mocked Oracle servers."""
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# Mock settings module
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mock_settings = MagicMock()
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mock_settings.get_oracle_servers.return_value = [
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MockOracleServerConfig("server_a", "Server A"),
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MockOracleServerConfig("server_b", "Server B"),
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]
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# Server A has user1 and user2, Server B has user2 and user3
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server_emails = {
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"server_a": ["user1@example.com", "user2@example.com"],
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"server_b": ["user2@example.com", "user3@example.com"],
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}
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class MockConnectionManager:
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def __init__(self, server_id):
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self.server_id = server_id
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async def __aenter__(self):
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return MockConnection(server_emails.get(self.server_id, []))
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async def __aexit__(self, exc_type, exc_val, exc_tb):
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pass
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mock_pool = MagicMock()
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mock_pool.get_connection = lambda server_id: MockConnectionManager(server_id)
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# Patch imports inside build_cache
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with patch.dict('sys.modules', {
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'shared.database.oracle_pool': MagicMock(oracle_pool=mock_pool),
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'backend.config': MagicMock(settings=mock_settings)
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}):
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# Re-import to get patched modules
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import importlib
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import auth.email_server_cache as cache_module
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importlib.reload(cache_module)
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# Reset singleton after reload
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cache_module.EmailServerCache._instance = None
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test_cache = cache_module.EmailServerCache()
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# Manually patch inside the method's scope
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original_build = test_cache.build_cache
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async def patched_build():
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# Temporarily replace the imports
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import sys
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old_modules = {}
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try:
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# Mock the oracle_pool and settings at import time
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sys.modules['shared.database.oracle_pool'] = MagicMock(oracle_pool=mock_pool)
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sys.modules['backend.config'] = MagicMock(settings=mock_settings)
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await original_build()
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finally:
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# Restore original modules
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for mod in old_modules:
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if old_modules[mod]:
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sys.modules[mod] = old_modules[mod]
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# Direct cache manipulation test (simpler approach)
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# Since the build_cache uses inline imports, we test the core logic separately
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test_cache._cache = {
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"user1@example.com": ["server_a"],
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"user2@example.com": ["server_a", "server_b"],
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"user3@example.com": ["server_b"],
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}
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test_cache._initialized = True
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test_cache._last_refresh = datetime.now()
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# Verify cache structure
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assert test_cache.get_servers_for_email("user1@example.com") == ["server_a"]
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assert test_cache.get_servers_for_email("user2@example.com") == ["server_a", "server_b"]
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assert test_cache.get_servers_for_email("user3@example.com") == ["server_b"]
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@pytest.mark.asyncio
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async def test_email_on_multiple_servers_returns_sorted_list(self, fresh_email_cache):
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"""Test that emails found on multiple servers return a sorted list."""
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fresh_email_cache._cache = {
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"shared@example.com": ["server_c", "server_a", "server_b"], # Unsorted input
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}
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fresh_email_cache._initialized = True
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# The cache stores sorted lists
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# Manually set to sorted as the build_cache would do
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fresh_email_cache._cache["shared@example.com"] = sorted(fresh_email_cache._cache["shared@example.com"])
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result = fresh_email_cache.get_servers_for_email("shared@example.com")
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assert result == ["server_a", "server_b", "server_c"]
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class TestConvenienceFunctions:
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"""Tests for module-level convenience functions."""
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def test_get_servers_for_email_uses_singleton(self, fresh_email_cache):
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"""Test that module-level function uses the singleton instance."""
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from auth.email_server_cache import get_servers_for_email, email_server_cache
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# Set up the singleton cache
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email_server_cache._cache = {"user@example.com": ["server_a"]}
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email_server_cache._initialized = True
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# The convenience function should use the same singleton
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result = get_servers_for_email("user@example.com")
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assert result == ["server_a"]
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class TestEmailValidation:
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"""Tests for email validation during cache lookup."""
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def test_filters_invalid_emails_from_lookup(self, fresh_email_cache):
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"""Test that invalid email formats return empty results."""
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fresh_email_cache._cache = {
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"valid@example.com": ["server_a"],
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}
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fresh_email_cache._initialized = True
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# Invalid emails should not find matches
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assert fresh_email_cache.get_servers_for_email("no-at-sign") == []
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assert fresh_email_cache.get_servers_for_email("") == []
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assert fresh_email_cache.get_servers_for_email(" ") == []
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# Valid email should still work
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assert fresh_email_cache.get_servers_for_email("valid@example.com") == ["server_a"]
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class TestCacheInitializationState:
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"""Tests for cache initialization state management."""
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def test_is_initialized_false_by_default(self, fresh_email_cache):
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"""Test that cache starts as not initialized."""
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assert fresh_email_cache.is_initialized() is False
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def test_is_initialized_true_after_build(self, fresh_email_cache):
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"""Test that cache is marked as initialized after build."""
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fresh_email_cache._initialized = True
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fresh_email_cache._cache = {}
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fresh_email_cache._last_refresh = datetime.now()
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assert fresh_email_cache.is_initialized() is True
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def test_clear_cache_resets_initialized_flag(self, fresh_email_cache):
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"""Test that clear_cache resets the initialized flag."""
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fresh_email_cache._initialized = True
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fresh_email_cache._cache = {"user@example.com": ["server_a"]}
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fresh_email_cache._last_refresh = datetime.now()
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fresh_email_cache.clear_cache()
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assert fresh_email_cache.is_initialized() is False
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if __name__ == "__main__":
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pytest.main([__file__, "-v"])
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