Greptile Overview

Summary

Fixed race condition in test_client_storage.py where test cleanup could fail with KeyError when StateManagerDisk's background task concurrently removes expired tokens. Changed from del dict[key] to dict.pop(key, None) for atomic, safe deletion.

• Replaced del app_state_manager.states[token] with app_state_manager.states.pop(token, None) on line 662
• Replaced del app_state_manager._write_queue[token] with app_state_manager._write_queue.pop(token, None) on line 663
• The .pop() method with default value prevents KeyError if the background task (_process_write_queue) has already removed the token

Confidence Score: 5/5

• This PR is safe to merge with no risk
• The change is a straightforward and correct fix for a race condition in test cleanup code. Using .pop(key, None) instead of del dict[key] is the standard Python idiom for safe dictionary deletion when the key might not exist. This eliminates test flakiness without any functional changes to production code
• No files require special attention

Important Files Changed

File Analysis

Sequence Diagram

sequenceDiagram
    participant Test as Test Code
    participant StateManager as StateManagerDisk
    participant BgTask as Background Task (_process_write_queue)
    participant Dict as states/write_queue

    Note over Test,Dict: Before the fix (Race Condition)
    Test->>StateManager: Check token exists in states
    BgTask->>Dict: pop(token) - removes expired token
    Test->>Dict: del states[token]
    Dict-->>Test: KeyError! (Race condition)

    Note over Test,Dict: After the fix (Safe)
    Test->>StateManager: Clean up test state
    BgTask->>Dict: pop(token) - may remove expired token
    Test->>Dict: pop(token, None)
    Dict-->>Test: None (safe, no error)

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