e2e for code interpreter load testing

[YaoZengzeng]

What type of PR is this?

/kind enhancement

What this PR does / why we need it:

Which issue(s) this PR fixes:
Fixes #

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Does this PR introduce a user-facing change?:

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[gemini-code-assist]

Summary of Changes

Hello @YaoZengzeng, 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 introduces comprehensive end-to-end load testing capabilities for the code interpreter feature. It aims to validate the performance and reliability of both warm pool and standard invocation scenarios under simulated stress, ensuring the system can handle expected traffic volumes effectively.

Highlights

• New Load Testing Utility: Introduced a generic runCodeInterpreterLoadTest function to execute load tests with configurable requests per second, duration, and output message format. This function handles concurrent requests, session management, command execution, and result aggregation.
• Warm Pool Load Test: Added TestCodeInterpreterWarmPoolLoad to specifically test the code interpreter's warm pool functionality under a load of 10 requests per second for 10 seconds, ensuring its stability and performance.
• Basic Invocation Load Test: Included TestCodeInterpreterBasicInvocationLoad to assess the performance of the code interpreter's basic invocation mechanism under a similar load profile (10 requests per second for 10 seconds).

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Changelog

• test/e2e/e2e_test.go
  • Added loadTestResult struct to encapsulate individual load test request outcomes.
  • Implemented runCodeInterpreterLoadTest function for parameterized load testing of the code interpreter.
  • Created TestCodeInterpreterWarmPoolLoad to perform load testing on code interpreter instances utilizing a warm pool.
  • Developed TestCodeInterpreterBasicInvocationLoad to conduct load testing on standard code interpreter invocations.

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[gemini-code-assist]

Code Review

This pull request introduces end-to-end load tests for the code interpreter, which is a valuable addition for assessing performance and stability under load. The implementation of the load test is solid, using goroutines for concurrency and a ticker for rate limiting. My review focuses on improving the robustness of the results reporting. I've identified a potential panic when no requests are successful and suggested a fix. I also proposed a change to make the logged statistics clearer in the same zero-success scenario. Overall, great work on adding these important tests.

[Copilot]

Pull request overview

Adds E2E load-testing coverage for the Code Interpreter invocation path (including warm pool behavior) to help validate stability and performance under concurrent request pressure.

Changes:

• Introduces a reusable runCodeInterpreterLoadTest helper that drives request-rate-controlled concurrent invocations and aggregates success/latency stats.
• Adds two new E2E tests: one for warm pool under load and one for basic (non-warm-pool) invocation under load.

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 42.46%. Comparing base (845b798) to head (678913d).
⚠️ Report is 91 commits behind head on main.
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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #214      +/-   ##
==========================================
+ Coverage   35.60%   42.46%   +6.85%     
==========================================
  Files          29       29              
  Lines        2533     2560      +27     
==========================================
+ Hits          902     1087     +185     
+ Misses       1505     1341     -164     
- Partials      126      132       +6     

Flag	Coverage Δ
unittests	42.46% <ø> (+6.85%)	⬆️

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[hzxuzhonghu]

I am not sure what's case you are testing

[YaoZengzeng]

I am not sure what's case you are testing

load test to avoid failure in #128

[YaoZengzeng]

ping @hzxuzhonghu