feat(10-02): Google Calendar OAuth endpoints and per-tenant calendar tool

- Add calendar_auth.py: OAuth install/callback/status endpoints with HMAC-signed state
- Replace calendar_lookup.py service account stub with per-tenant OAuth token lookup
- Support list, check_availability, and create actions with natural language responses
- Token auto-refresh: write updated credentials back to channel_connections on refresh
- Add migration 013: add google_calendar to channel_type CHECK constraint
- Add unit tests: 16 tests covering all actions, not-connected path, token refresh write-back
This commit is contained in:
2026-03-26 09:07:37 -06:00
parent e8d3e8a108
commit 08572fcc40
5 changed files with 1318 additions and 62 deletions

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"""
Unit tests for Google Calendar OAuth endpoints.
Tests:
- /install endpoint returns OAuth URL with HMAC state
- /callback verifies state, stores encrypted token in DB
- /status returns connected=True when token exists, False otherwise
- HMAC state generation and verification work correctly
- Missing credentials configuration handled gracefully
"""
from __future__ import annotations
import base64
import json
import uuid
from unittest.mock import AsyncMock, MagicMock, patch
import pytest
_SECRET = "test-oauth-state-secret"
_TENANT_ID = str(uuid.uuid4())
# ---------------------------------------------------------------------------
# HMAC state helper tests (reuse from channels.py)
# ---------------------------------------------------------------------------
def test_calendar_install_builds_oauth_url():
"""
calendar_install endpoint returns a dict with a 'url' key pointing at
accounts.google.com/o/oauth2/v2/auth.
"""
from shared.api.calendar_auth import build_calendar_oauth_url
url = build_calendar_oauth_url(tenant_id=_TENANT_ID, secret=_SECRET)
assert "accounts.google.com/o/oauth2/v2/auth" in url
assert "client_id=" in url
assert "scope=" in url
assert "state=" in url
assert "access_type=offline" in url
assert "prompt=consent" in url
def test_calendar_oauth_url_contains_signed_state():
"""State parameter in the OAuth URL encodes the tenant_id."""
from shared.api.calendar_auth import build_calendar_oauth_url
from shared.api.channels import verify_oauth_state
url = build_calendar_oauth_url(tenant_id=_TENANT_ID, secret=_SECRET)
# Extract state from URL
import urllib.parse
parsed = urllib.parse.urlparse(url)
params = urllib.parse.parse_qs(parsed.query)
state = params["state"][0]
# Verify the state recovers the tenant_id
recovered = verify_oauth_state(state=state, secret=_SECRET)
assert recovered == _TENANT_ID
def test_calendar_oauth_url_uses_calendar_scope():
"""OAuth URL requests full Google Calendar scope."""
from shared.api.calendar_auth import build_calendar_oauth_url
url = build_calendar_oauth_url(tenant_id=_TENANT_ID, secret=_SECRET)
assert "googleapis.com/auth/calendar" in url
# ---------------------------------------------------------------------------
# Callback token exchange and storage
# ---------------------------------------------------------------------------
@pytest.mark.asyncio
async def test_calendar_callback_stores_encrypted_token():
"""
handle_calendar_callback() exchanges code for tokens, encrypts them,
and upserts a ChannelConnection with channel_type='google_calendar'.
"""
from shared.api.calendar_auth import handle_calendar_callback
mock_session = AsyncMock()
mock_session.execute = AsyncMock()
mock_session.add = MagicMock()
mock_session.commit = AsyncMock()
# Simulate no existing connection (first install)
mock_result = MagicMock()
mock_result.scalar_one_or_none.return_value = None
mock_session.execute.return_value = mock_result
token_response = {
"access_token": "ya29.test_access_token",
"refresh_token": "1//test_refresh_token",
"token_type": "Bearer",
"expires_in": 3600,
}
with (
patch("shared.api.calendar_auth.httpx.AsyncClient") as mock_client_cls,
patch("shared.api.calendar_auth.KeyEncryptionService") as mock_enc_cls,
patch("shared.api.calendar_auth.settings") as mock_settings,
):
mock_settings.oauth_state_secret = _SECRET
mock_settings.google_client_id = "test-client-id"
mock_settings.google_client_secret = "test-client-secret"
mock_settings.portal_url = "http://localhost:3000"
mock_settings.platform_encryption_key = "test-key"
mock_settings.platform_encryption_key_previous = ""
mock_response = MagicMock()
mock_response.status_code = 200
mock_response.json.return_value = token_response
mock_http = AsyncMock()
mock_http.__aenter__ = AsyncMock(return_value=mock_http)
mock_http.__aexit__ = AsyncMock(return_value=None)
mock_http.post = AsyncMock(return_value=mock_response)
mock_client_cls.return_value = mock_http
mock_enc = MagicMock()
mock_enc.encrypt.return_value = "encrypted_token_data"
mock_enc_cls.return_value = mock_enc
# Generate a valid state
from shared.api.channels import generate_oauth_state
state = generate_oauth_state(tenant_id=_TENANT_ID, secret=_SECRET)
redirect_url = await handle_calendar_callback(
code="test_auth_code",
state=state,
session=mock_session,
)
# Should redirect to portal settings
assert "settings" in redirect_url or "calendar" in redirect_url
# Session.add should have been called (new ChannelConnection)
mock_session.add.assert_called_once()
# Encryption was called
mock_enc.encrypt.assert_called_once()
# The ChannelConnection passed to add should have google_calendar type
conn = mock_session.add.call_args[0][0]
assert "google_calendar" in str(conn.channel_type).lower()
@pytest.mark.asyncio
async def test_calendar_callback_invalid_state_raises():
"""handle_calendar_callback raises HTTPException for tampered state."""
from fastapi import HTTPException
from shared.api.calendar_auth import handle_calendar_callback
mock_session = AsyncMock()
with patch("shared.api.calendar_auth.settings") as mock_settings:
mock_settings.oauth_state_secret = _SECRET
with pytest.raises(HTTPException) as exc_info:
await handle_calendar_callback(
code="some_code",
state="TAMPERED.INVALID",
session=mock_session,
)
assert exc_info.value.status_code == 400
# ---------------------------------------------------------------------------
# Status endpoint
# ---------------------------------------------------------------------------
@pytest.mark.asyncio
async def test_calendar_status_connected():
"""get_calendar_status returns connected=True when ChannelConnection exists."""
from shared.api.calendar_auth import get_calendar_status
mock_session = AsyncMock()
mock_result = MagicMock()
# Simulate existing connection
mock_conn = MagicMock()
mock_result.scalar_one_or_none.return_value = mock_conn
mock_session.execute.return_value = mock_result
tenant_id = uuid.uuid4()
status = await get_calendar_status(tenant_id=tenant_id, session=mock_session)
assert status["connected"] is True
@pytest.mark.asyncio
async def test_calendar_status_not_connected():
"""get_calendar_status returns connected=False when no ChannelConnection exists."""
from shared.api.calendar_auth import get_calendar_status
mock_session = AsyncMock()
mock_result = MagicMock()
mock_result.scalar_one_or_none.return_value = None
mock_session.execute.return_value = mock_result
tenant_id = uuid.uuid4()
status = await get_calendar_status(tenant_id=tenant_id, session=mock_session)
assert status["connected"] is False