🐛 Fix: 修正 http/websocket client timeout (#3923)

Co-authored-by: Ju4tCode <42488585+yanyongyu@users.noreply.github.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

tests/test_utils.py

@@ -1,9 +1,19 @@
+import copy
 import json
+import pickle
 from typing import ClassVar, Dict, List, Literal, TypeVar, Union  # noqa: UP035
 
+from pydantic import ValidationError
+import pytest
+
+from nonebot.compat import type_validate_python
 from nonebot.utils import (
+    UNSET,
     DataclassEncoder,
+    Unset,
+    UnsetType,
     escape_tag,
+    exclude_unset,
     generic_check_issubclass,
     is_async_gen_callable,
     is_coroutine_callable,
@@ -12,6 +22,29 @@ from nonebot.utils import (
 from utils import FakeMessage, FakeMessageSegment
 
 
+def test_unset():
+    assert isinstance(UNSET, Unset)
+    assert bool(UNSET) is False
+    assert copy.copy(UNSET) is UNSET
+    assert copy.deepcopy(UNSET) is UNSET
+    assert pickle.loads(pickle.dumps(UNSET)) is UNSET
+    assert type_validate_python(UnsetType, UNSET) is UNSET
+
+    with pytest.raises(ValidationError):
+        type_validate_python(UnsetType, 123)
+
+
+def test_exclude_unset():
+    assert exclude_unset({"a": 1, "b": UNSET, "c": None, "d": {"x": UNSET}}) == {
+        "a": 1,
+        "c": None,
+        "d": {},
+    }
+    assert exclude_unset([1, UNSET, None, {"x": UNSET}]) == [1, None, {}]
+    assert exclude_unset(UNSET) is None
+    assert exclude_unset(123) == 123
+
+
 def test_loguru_escape_tag():
     assert escape_tag("<red>red</red>") == r"\<red>red\</red>"
     assert escape_tag("<fg #fff>white</fg #fff>") == r"\<fg #fff>white\</fg #fff>"