修复 Gate K 线分页：单次不足 300 根时继续拉取至最新

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_hub_ohlcv_lib.py

@@ -0,0 +1,56 @@
+"""hub_ohlcv_lib：分页拉取（Gate 等单次不足 chunk 时仍继续）。"""
+from __future__ import annotations
+
+import unittest
+
+from hub_ohlcv_lib import fetch_ohlcv_for_hub
+
+
+class _FakeExchange:
+    def __init__(self, pages):
+        self.pages = list(pages)
+        self.calls = []
+        self.markets = {}
+
+    def fetch_ohlcv(self, symbol, timeframe=None, since=None, limit=None):
+        self.calls.append({"symbol": symbol, "since": since, "limit": limit})
+        if not self.pages:
+            return []
+        page = self.pages.pop(0)
+        return [b for b in page if b[0] >= since] if since else page
+
+
+class TestHubOhlcvLib(unittest.TestCase):
+    def test_pagination_continues_when_page_smaller_than_chunk(self):
+        """Gate 等常返回 299 根/次，不应误判为已到末尾。"""
+        base = 1_700_000_000_000
+        step = 4 * 60 * 60 * 1000
+        page1 = [
+            [base + i * step, 1.0, 1.1, 0.9, 1.05, 100.0] for i in range(299)
+        ]
+        page2 = [
+            [base + (299 + i) * step, 2.0, 2.1, 1.9, 2.05, 200.0] for i in range(299)
+        ]
+        page3 = [
+            [base + (598 + i) * step, 3.0, 3.1, 2.9, 3.05, 300.0] for i in range(50)
+        ]
+        ex = _FakeExchange([page1, page2, page3])
+
+        out = fetch_ohlcv_for_hub(
+            symbol="INJ/USDT",
+            timeframe="4h",
+            since_ms=base,
+            limit=600,
+            normalize_symbol_input=lambda s: str(s).strip().upper(),
+            normalize_exchange_symbol=lambda s: f"{s}:USDT" if ":" not in s else s,
+            ensure_markets_loaded=lambda: None,
+            exchange=ex,
+        )
+        self.assertTrue(out.get("ok"))
+        self.assertEqual(len(out.get("bars") or []), 600)
+        self.assertGreaterEqual(len(ex.calls), 3)
+        self.assertAlmostEqual(out["bars"][-1]["close"], 3.05)
+
+
+if __name__ == "__main__":
+    unittest.main()