test(dump): add comprehensive tests for stack trace and coredump functionalities

[adity1raut]

…tionalities

Ⅰ. Describe what this PR does

• test(dump): add comprehensive tests for stack trace and coredump functionalities

Ⅱ. Does this pull request fix one issue?

Part of #5407

Ⅲ. List the added test cases (unit test/integration test) if any, please explain if no tests are needed.

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[fluid-e2e-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[gemini-code-assist]

Summary of Changes

Hello @adity1raut, 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 significantly enhances the test coverage for the dump package by introducing a new, comprehensive test suite. These tests validate the core functionalities of stack trace generation, coredump creation, and the signal-driven goroutine dump mechanism, ensuring robustness and correctness across various scenarios.

Highlights

• Comprehensive Stack Trace Tests: Added extensive unit tests for the StackTrace function, covering scenarios for all goroutines, current goroutine, and verifying buffer growth for large stack traces.
• Goroutine Dump Generator Validation: Introduced tests for the InstallgoroutineDumpGenerator function, ensuring its idempotent initialization and proper response to SIGQUIT signals, including the creation of dump files.
• Coredump Functionality Tests: Implemented tests to validate the coredump function, verifying correct file creation, content integrity, and graceful handling of potential write errors.
• Dumpfile Path Formatting Tests: Included tests for the formatDumpfile helper function to confirm accurate construction of dump file paths under various conditions.

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[fluid-e2e-bot]

Hi @adity1raut. Thanks for your PR.

I'm waiting for a fluid-cloudnative member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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Details

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[gemini-code-assist]

Code Review

This pull request introduces a comprehensive test suite for the dump package, covering stack traces, signal-triggered goroutine dumps, and coredump creation. This is a valuable addition. My review focuses on enhancing the robustness and maintainability of these new tests. I've provided suggestions to eliminate redundant test cases, strengthen weak assertions, and adopt Go best practices for file path and string manipulation to create a cleaner and more reliable test suite.

[adity1raut]

/cc @cheyang @RongGu

[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

[codecov]

Codecov Report

❌ Patch coverage is 92.30769% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 56.89%. Comparing base (7b2a096) to head (838810a).
⚠️ Report is 14 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/dump/dump.go	92.30%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5434      +/-   ##
==========================================
- Coverage   57.46%   56.89%   -0.57%     
==========================================
  Files         443      443              
  Lines       30735    30738       +3     
==========================================
- Hits        17661    17488     -173     
- Misses      11460    11694     +234     
+ Partials     1614     1556      -58     

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