feat: add Tencent quote parser

tests/test_tencent_quotes.py

@@ -0,0 +1,66 @@
+from decimal import Decimal
+
+import pytest
+
+from grid_trading.domain.models import Instrument
+from grid_trading.market.tencent import (
+    QuoteFetchError,
+    TencentQuoteProvider,
+    infer_tencent_symbol,
+    parse_tencent_response,
+)
+
+
+def test_infer_tencent_symbol_from_a_share_code():
+    assert infer_tencent_symbol("000001") == "sz000001"
+    assert infer_tencent_symbol("600000") == "sh600000"
+    assert infer_tencent_symbol("510300") == "sh510300"
+    assert infer_tencent_symbol("sz000001") == "sz000001"
+
+
+def test_parse_tencent_response_extracts_realtime_fields():
+    raw = (
+        'v_sz000001="51~平安银行~000001~10.60~10.47~10.44~0~0~0~'
+        '10.60~0~10.59~0~10.58~0~10.57~0~10.56~0~10.61~0~10.62~0~'
+        '10.63~0~10.64~0~10.65~0~~20260708161430~0.13~1.24~10.63~10.34";'
+    ).encode("gbk")
+
+    [quote] = parse_tencent_response(raw)
+
+    assert quote.symbol == "sz000001"
+    assert quote.code == "000001"
+    assert quote.name == "平安银行"
+    assert quote.price == Decimal("10.60")
+    assert quote.previous_close == Decimal("10.47")
+    assert quote.open_price == Decimal("10.44")
+    assert quote.change == Decimal("0.13")
+    assert quote.change_percent == Decimal("1.24")
+    assert quote.high == Decimal("10.63")
+    assert quote.low == Decimal("10.34")
+    assert quote.quote_time == "20260708161430"
+    assert quote.source == "tencent"
+
+
+def test_parse_tencent_response_rejects_missing_price():
+    raw = 'v_sz000001="51~平安银行~000001~~~";'.encode("gbk")
+
+    with pytest.raises(QuoteFetchError, match="price"):
+        parse_tencent_response(raw)
+
+
+def test_provider_builds_batch_query_and_maps_by_code():
+    calls: list[str] = []
+    raw = (
+        'v_sz000001="51~平安银行~000001~10.60~10.47~10.44~0~0~0~'
+        '0~0~0~0~0~0~0~0~0~0~0~0~0~0~0~0~0~0~0~0~~20260708161430~0.13~1.24~10.63~10.34";'
+    ).encode("gbk")
+
+    def fake_fetch(url: str, timeout: float) -> bytes:
+        calls.append(url)
+        return raw
+
+    provider = TencentQuoteProvider(fetcher=fake_fetch)
+    quotes = provider.fetch_quotes([Instrument(id=1, code="000001", name="平安银行")])
+
+    assert "q=sz000001" in calls[0]
+    assert quotes["000001"].price == Decimal("10.60")