fix(HEL-484): 中枢分时接口空 date 按当天查询

缺少或为空的 date 不再 400，按当天处理；显式历史日期保持原行为。

Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: multica-agent <github@multica.ai>

xiaobai-datahub/tests/test_realtime_intraday.py

@@ -9,6 +9,8 @@ from datahub.adapters.base import AdapterError
 from datahub.adapters.eastmoney import HIS_TRENDS_URL, TRENDS_URL, EastmoneyAdapter
 from datahub.db import HubDB
 from datahub.realtime_serve import fetch_intraday
+from datahub.serving import ApiError, V1API
+from datahub.timeutil import now_shanghai, yyyymmdd
 
 
 class FakeEastmoney(EastmoneyAdapter):
@@ -98,5 +100,77 @@ class IntradayLkgTests(unittest.TestCase):
         self.assertIn("intraday unavailable", str(ctx.exception))
 
 
+class ServingIntradayDateTests(unittest.TestCase):
+    def setUp(self) -> None:
+        self.tmp = tempfile.TemporaryDirectory()
+        self.db = HubDB(Path(self.tmp.name) / "hub.db")
+        self.api = V1API(self.db, pipeline=None, settings=None)
+
+    def tearDown(self) -> None:
+        self.tmp.cleanup()
+
+    def _assert_usable_intraday(self, payload: dict) -> None:
+        data = payload["data"]
+        points = [point for point in data.get("points") or [] if float(point.get("close") or 0) > 0]
+        self.assertGreaterEqual(len(points), 1)
+        self.assertTrue(str(data.get("trade_date") or ""))
+        self.assertFalse((payload.get("meta") or {}).get("stale"))
+
+    def test_serving_omitted_or_empty_date_uses_today_and_returns_points(self) -> None:
+        today = yyyymmdd(now_shanghai())
+        omitted = self.api.handle("/v1/intraday/points", {"code": ["601318"]})
+        empty = self.api.handle("/v1/intraday/points", {"code": ["601318"], "date": [""]})
+        explicit = self.api.handle("/v1/intraday/points", {"code": ["601318"], "date": [today]})
+        self._assert_usable_intraday(omitted)
+        self._assert_usable_intraday(empty)
+        self._assert_usable_intraday(explicit)
+        self.assertEqual(omitted["data"]["trade_date"], empty["data"]["trade_date"])
+        self.assertEqual(explicit["data"]["trade_date"], omitted["data"]["trade_date"])
+
+    def test_serving_normalizes_empty_date_to_today_and_keeps_history(self) -> None:
+        today = yyyymmdd(now_shanghai())
+        captured: list[str] = []
+
+        def fake_fetch(db, code, date=""):
+            captured.append(date)
+            return {
+                "schema_version": 1,
+                "data": {
+                    "trade_date": f"{date[:4]}-{date[4:6]}-{date[6:8]}",
+                    "points": [{"date": f"{date[:4]}-{date[4:6]}-{date[6:8]}", "time": "09:30", "close": 55.9}],
+                },
+                "meta": {"stale": False, "trade_date": date},
+            }
+
+        with patch("datahub.realtime_serve.fetch_intraday", side_effect=fake_fetch):
+            omitted = self.api.handle("/v1/intraday/points", {"code": ["601318"]})
+            empty = self.api.handle("/v1/intraday/points", {"code": ["601318"], "date": ["  "]})
+            history = self.api.handle("/v1/intraday/points", {"code": ["601318"], "date": ["20260907"]})
+        self.assertEqual(captured, [today, today, "20260907"])
+        self.assertEqual(omitted["data"]["trade_date"], f"{today[:4]}-{today[4:6]}-{today[6:8]}")
+        self.assertEqual(empty["data"]["trade_date"], omitted["data"]["trade_date"])
+        self.assertEqual(history["data"]["trade_date"], "2026-09-07")
+
+    def test_serving_invalid_date_is_invalid_argument(self) -> None:
+        with self.assertRaises(ApiError) as ctx:
+            self.api.handle("/v1/intraday/points", {"code": ["601318"], "date": ["not-a-date"]})
+        self.assertEqual(ctx.exception.code, "INVALID_ARGUMENT")
+        self.assertIn("invalid trade_date", ctx.exception.message)
+
+    def test_serving_missing_code_is_invalid_argument(self) -> None:
+        with self.assertRaises(ApiError) as ctx:
+            self.api.handle("/v1/intraday/points", {"date": [yyyymmdd(now_shanghai())]})
+        self.assertEqual(ctx.exception.code, "INVALID_ARGUMENT")
+        self.assertIn("code is required", ctx.exception.message)
+
+    def test_serving_no_data_keeps_source_unavailable(self) -> None:
+        with patch("datahub.realtime_serve.EastmoneyAdapter") as mocked:
+            mocked.return_value.fetch_intraday.side_effect = AdapterError("No intraday chart data returned")
+            with self.assertRaises(ApiError) as ctx:
+                self.api.handle("/v1/intraday/points", {"code": ["000001"]})
+        self.assertEqual(ctx.exception.code, "SOURCE_UNAVAILABLE")
+        self.assertIn("intraday unavailable", ctx.exception.message)
+
+
 if __name__ == "__main__":
     unittest.main()