ticker-validate: add /api/ticker/validate endpoint

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

tests/test_ticker_validate.py

@@ -0,0 +1,62 @@
+"""Tests for /api/ticker/validate and /api/ticker/historical."""
+from __future__ import annotations
+
+from datetime import datetime, timezone
+from io import BytesIO
+from types import SimpleNamespace
+from unittest.mock import AsyncMock
+
+import pytest
+
+
+def _build_session_factory(tmp_path):
+    """Spin up a fresh in-memory schema and return (engine, factory, setup).
+    Mirrors tests/test_llm_csv_parser.py / tests/test_referral_conversion.py."""
+    from sqlalchemy.ext.asyncio import async_sessionmaker, create_async_engine
+
+    from app import db as db_mod
+    from app.db import Base
+    import app.models  # noqa: F401
+
+    engine = create_async_engine(f"sqlite+aiosqlite:///{tmp_path}/tv.db")
+    factory = async_sessionmaker(engine, expire_on_commit=False)
+    db_mod._engine = engine
+    db_mod._session_factory = factory
+
+    async def _setup():
+        async with engine.begin() as conn:
+            await conn.run_sync(Base.metadata.create_all)
+
+    return engine, factory, _setup
+
+
+@pytest.mark.asyncio
+async def test_validate_happy_path(tmp_path, monkeypatch):
+    from app.routers.ticker_validate import validate_ticker
+    from app.services.market import Quote
+    import app.routers.ticker_validate as mod
+
+    _, factory, setup = _build_session_factory(tmp_path)
+    await setup()
+
+    # Mock fetch_yahoo to return a successful quote.
+    async def _fake_yahoo(client, symbol, label, note, anchor=None):
+        return Quote(
+            symbol=symbol, source="yahoo", label=label, note=note,
+            price=172.40, currency="USD", as_of="2026-05-27", changes={},
+        )
+    monkeypatch.setattr(mod, "fetch_yahoo", _fake_yahoo)
+
+    # Avoid the MySQL-only upsert on SQLite.
+    async def _fake_upsert(session, tickers):
+        return len(list(tickers))
+    monkeypatch.setattr(mod, "upsert_tickers", _fake_upsert)
+
+    async with factory() as session:
+        result = await validate_ticker(symbol="aapl", session=session)
+
+    assert result["ok"] is True
+    assert result["symbol"] == "AAPL"
+    assert result["price"] == 172.40
+    assert result["currency"] == "USD"
+    assert result["as_of"] == "2026-05-27"