Add unit tests for TimeoutHTTPAdapter

[Copilot]

Description

Adds comprehensive unit tests for TimeoutHTTPAdapter to validate timeout injection behavior and parameter handling.

Closes: #1358

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Test Coverage

Added 8 tests covering:

• Initialization: timeout parameter storage, default None behavior, parameter passthrough to HTTPAdapter
• Timeout injection: default timeout application, explicit override, None handling (no injection)
• Integration: create_session() uses DEFAULT_TIMEOUT (60s), correct inheritance from HTTPAdapter

Tests use unittest.mock.patch to verify timeout values passed to parent send() method.

Additional Changes

Fixed tutils/check.py to handle missing swanboard package gracefully (prevents IndexError during test setup).

Original prompt

---

This section details on the original issue you should resolve

<issue_title>为TimeoutAdapter添加测试</issue_title>
<issue_description>### 功能请求是否与某个问题相关？请描述。

与此issue相关： #1358

描述您希望的解决方案

在test/unit对应目录下添加单测

描述您考虑过的替代方案

No response</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes 为TimeoutAdapter添加测试 #1360

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[SAKURA-CAT]

/gemini review

[gemini-code-assist]

Code Review

This pull request adds a comprehensive set of unit tests for the TimeoutHTTPAdapter, which is great for ensuring its behavior is correct and preventing future regressions. The tests cover initialization, timeout injection logic, and integration with create_session. The fix in tutils/check.py to gracefully handle a missing swanboard package is also a good improvement.

I've left a couple of suggestions for minor improvements:

• In tutils/check.py, the logic for parsing the package version can be made more robust and secure.
• In test/unit/core_python/test_session.py, one of the tests has a redundant assertion that can be removed to improve clarity.

Overall, this is a solid contribution that improves the test coverage and robustness of the codebase.