✨ Feature: 兼容 Pydantic v2 (#2544)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

tests/test_compat.py

@@ -0,0 +1,56 @@
+from typing import Any
+from dataclasses import dataclass
+
+import pytest
+
+from nonebot.compat import (
+    DEFAULT_CONFIG,
+    Required,
+    FieldInfo,
+    PydanticUndefined,
+    custom_validation,
+    type_validate_python,
+)
+
+
+@pytest.mark.asyncio
+async def test_default_config():
+    assert DEFAULT_CONFIG.get("extra") == "allow"
+    assert DEFAULT_CONFIG.get("arbitrary_types_allowed") is True
+
+
+@pytest.mark.asyncio
+async def test_field_info():
+    # required should be convert to PydanticUndefined
+    assert FieldInfo(Required).default is PydanticUndefined
+
+    # field info should allow extra attributes
+    assert FieldInfo(test="test").extra["test"] == "test"
+
+
+@pytest.mark.asyncio
+async def test_custom_validation():
+    called = []
+
+    @custom_validation
+    @dataclass
+    class TestModel:
+        test: int
+
+        @classmethod
+        def __get_validators__(cls):
+            yield cls._validate_1
+            yield cls._validate_2
+
+        @classmethod
+        def _validate_1(cls, v: Any) -> Any:
+            called.append(1)
+            return v
+
+        @classmethod
+        def _validate_2(cls, v: Any) -> Any:
+            called.append(2)
+            return cls(test=v["test"])
+
+    assert type_validate_python(TestModel, {"test": 1}) == TestModel(test=1)
+    assert called == [1, 2]