袁聪的第一次提交，包含nl2sql,行情数据,场外申购

tests/unit/service/test_offsite_fund_rules.py

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+from decimal import Decimal
+
+from app.service.offsite_fund_rules import OffsiteFundRuleEngine, normalize_amount_yuan
+
+
+def test_subscription_minimum_amount_boundary() -> None:
+    engine = OffsiteFundRuleEngine()
+    below = engine.check_subscription(
+        amount_yuan=Decimal("0.99"), nav=None, total_fund_shares=None,
+        before_holding_shares=None)
+    equal = engine.check_subscription(
+        amount_yuan=Decimal("1.00"), nav=None, total_fund_shares=None,
+        before_holding_shares=None)
+    above = engine.check_subscription(
+        amount_yuan=Decimal("1.01"), nav=None, total_fund_shares=None,
+        before_holding_shares=None)
+    assert below[0].result == "异常"
+    assert equal[0].result == "异常"
+    assert above[0].result == "正常"
+
+
+def test_subscription_ratio_and_share_limit_boundary() -> None:
+    engine = OffsiteFundRuleEngine()
+    normal = engine.check_subscription(
+        amount_yuan=Decimal("100"), nav=Decimal("1"), total_fund_shares=Decimal("1000"),
+        before_holding_shares=Decimal("100"))
+    abnormal = engine.check_subscription(
+        amount_yuan=Decimal("101"), nav=Decimal("1"), total_fund_shares=Decimal("1000"),
+        before_holding_shares=Decimal("100"))
+    assert {item.rule_code: item.result for item in normal}["subscription_holding_ratio"] == "正常"
+    assert {item.rule_code: item.result for item in abnormal}[
+        "subscription_holding_ratio"] == "异常"
+    assert {item.rule_code: item.result for item in abnormal}[
+        "subscription_single_share_limit"] == "异常"
+
+
+def test_redemption_ratio_and_available_quantity_boundary() -> None:
+    engine = OffsiteFundRuleEngine()
+    normal = engine.check_redemption(
+        redemption_shares=Decimal("200"), total_fund_shares=Decimal("1000"),
+        available_quantity=Decimal("200"))
+    abnormal = engine.check_redemption(
+        redemption_shares=Decimal("201"), total_fund_shares=Decimal("1000"),
+        available_quantity=Decimal("200"))
+    assert {item.rule_code: item.result for item in normal}["redemption_large_ratio"] == "正常"
+    assert {item.rule_code: item.result for item in normal}[
+        "redemption_available_quantity"] == "正常"
+    assert {item.rule_code: item.result for item in abnormal}["redemption_large_ratio"] == "异常"
+    assert {item.rule_code: item.result for item in abnormal}[
+        "redemption_available_quantity"] == "异常"
+
+
+def test_normalize_amount_keeps_original_unit_semantics() -> None:
+    assert normalize_amount_yuan("2.50", "万元") == Decimal("25000.00")
+    assert normalize_amount_yuan("2.50", "元") == Decimal("2.50")
+    assert normalize_amount_yuan("2.50", "美元") is None