[python] Fix XML deserialization for enum/datetime types and add mock API tests

[Copilot]

• Ensure prerequisites are met (pnpm install, package build)
• Identify the Spector case link (from PR Add XML model test cases for enum and datetime properties #9660: payload/xml ModelWithEnum and ModelWithDatetime)
• Update @typespec/http-specs dependency to 0.1.0-alpha.33-dev.2 in packages/http-client-python/package.json
• Regenerate the payload/xml generated client
• Fix XML deserialization bug for enum (CaseInsensitiveEnumMeta) and datetime types in model_base.py.jinja2
• Add None check for value.text before passing to _DESERIALIZE_MAPPING / _DESERIALIZE_MAPPING_WITHFORMAT callables
• Implement sync tests in generic_mock_api_tests/test_payload_xml.py for ModelWithEnum and ModelWithDatetime
• Implement async tests in generic_mock_api_tests/asynctests/test_payload_xml_async.py for ModelWithEnum and ModelWithDatetime
• Format changed Python files with Black
• Validate tests locally (all 15 sync + 15 async tests pass)
• Add a changelog entry under .chronus/changes
• Run code review (no issues found)
• Run CodeQL security scan (no alerts)

Security Summary

No security vulnerabilities were introduced or discovered.

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/microsoft/typespec/@typespec/http@9724

npm i https://pkg.pr.new/microsoft/typespec/@typespec/http-client@9724

commit: a6d65b9

[github-actions]

All changed packages have been documented.

• ✅ @typespec/http-client-python

Show changes

@typespec/http-client-python - internal ✏️

Add mock API tests for XML model with enum and datetime properties, and fix XML deserialization for enum and datetime types

[azure-sdk]

You can try these changes here

🛝 Playground	🌐 Website	🛝 VSCode Extension