test: add test for non-blocking sendMessage

[swapydapy]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @swapydapy, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on enhancing test coverage by adding a dedicated test case for the non-blocking functionality of the sendMessage operation. The new test ensures that asynchronous message processing correctly initiates and completes tasks in the background, validating a key aspect of the system's concurrency model.

Highlights

• New Test Case for Non-Blocking SendMessage: I've added test_on_message_send_non_blocking to test_default_request_handler.py. This new test specifically verifies the asynchronous behavior of the on_message_send method when blocking is set to False in the MessageSendConfiguration. It initiates a non-blocking message send and then polls the task store to confirm the task eventually reaches a completed state.
• Test Agent Executor: To support the new non-blocking test, I've introduced a HelloAgentExecutor class. This mock agent executor simulates an agent's execution flow, including creating a new task if none exists, updating its status to working, adding an artifact, and finally marking the task as completed.

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[gemini-code-assist]

Code Review

This pull request introduces a test case for the non-blocking sendMessage functionality. Suggestions have been provided to improve type safety, logging, and assertion practices within the test to enhance its robustness and maintainability.