Add delay to let ProxySQL process mysql_stmt_close()

[rahim-kanji]

Add delay to test_prepare_statement_memory_usage-t allowing ProxySQL time to process mysql_stmt_close().

[gemini-code-assist]

Summary of Changes

Hello @rahim-kanji, 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 enhances the reliability of a specific test case by adding a short delay. The modification addresses a timing sensitivity where ProxySQL required additional time to finalize the closing of prepared statements. By introducing this pause, the test is expected to run more consistently and accurately reflect memory usage behavior, avoiding flakiness caused by asynchronous processing.

Highlights

• Test Stability: A 10-millisecond delay has been introduced in the test_prepare_statement_memory_usage-t test case.
• ProxySQL Processing: This delay ensures that ProxySQL has adequate time to process the mysql_stmt_close() operation, preventing potential race conditions or incomplete resource cleanup during testing.

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[gemini-code-assist]

Code Review

This pull request adds a delay to a test to fix a race condition where asynchronous cleanup was not completed before the next test step. The fix is pragmatic. My review includes a suggestion to improve the robustness and maintainability of this fix by replacing the magic number for the sleep duration with a named constant, and also discusses a more robust polling-based alternative for future consideration.