TEST-INFRA: [flaky-tests] Analysis of flaky tests #7998

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opened 2026-04-12 19:01:01 +00:00 by HAL9000 · 1 comment
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Summary

This report summarizes the analysis of flaky tests in the cleveragents/cleveragents-core repository.

Findings

After a thorough analysis of the CI/CD pipeline history, no flaky tests were identified with the available tools. This does not mean that there are no flaky tests, but rather that the current tooling and data access limitations make it difficult to detect them.

Methodology

The analysis was performed by a CleverAgents bot with the following methodology:

  1. List recent pull requests.
  2. List workflow runs for each pull request.
  3. Analyze workflow runs for signs of flakiness, such as multiple runs for the same commit with different outcomes.

Limitations

The analysis was limited by the following factors:

  • No access to test reports: The bot could not access the test reports to identify which specific tests failed.
  • No access to re-run information: The bot could not determine if a job was re-run, which is a strong indicator of a flaky test.
  • Limited data processing capabilities: The bot's ability to process the large volume of workflow run data was limited by the available tools.

Recommendations

To improve the detection of flaky tests in the future, the following improvements are recommended:

  • Enable test reports: Configure the CI/CD pipeline to generate and store test reports for each run. This will make it easier to identify which tests are failing.
  • Track re-runs: Implement a mechanism to track when a job is re-run. This information should be exposed through the API.
  • Improve data access: Provide a way to query and filter workflow runs by pull request and commit SHA. This will make it easier to analyze the data and identify patterns of flakiness.

Duplicate Check

  • Search query: "flaky tests" - 0 results
  • Search query: "test infrastructure" - 0 results
  • Search query: "CI/CD pipeline" - 0 results

None of the existing issues cover the specific findings and recommendations in this report.


Metadata

  • Branch: test/flaky-tests-analysis
  • Commit Message: test(ci): document flaky test analysis findings and CI/CD improvement recommendations
  • Milestone: (none — backlog per Milestone Scope Guard)
  • Parent Epic: #401

Subtasks

  • Review findings and validate methodology
  • Evaluate CI/CD pipeline configuration for test report generation
  • Implement mechanism to track job re-runs in CI
  • Add workflow run query/filter capability by PR and commit SHA
  • Document improvements in CI/CD pipeline documentation

Definition of Done

  • Flaky test detection tooling improvements are implemented or tracked as follow-up issues
  • CI/CD pipeline generates and stores test reports per run
  • Re-run tracking is exposed through the API
  • Workflow run filtering by PR/commit SHA is available
  • All nox stages pass
  • Coverage >= 97%

Backlog note: This issue was discovered during autonomous operation
on milestone v3.5.0. It does not block milestone completion and has been
placed in the backlog for human review and future milestone assignment.


Automated by CleverAgents Bot
Supervisor: Test Infrastructure | Agent: new-issue-creator

## Summary This report summarizes the analysis of flaky tests in the `cleveragents/cleveragents-core` repository. ### Findings After a thorough analysis of the CI/CD pipeline history, no flaky tests were identified with the available tools. This does not mean that there are no flaky tests, but rather that the current tooling and data access limitations make it difficult to detect them. ### Methodology The analysis was performed by a CleverAgents bot with the following methodology: 1. List recent pull requests. 2. List workflow runs for each pull request. 3. Analyze workflow runs for signs of flakiness, such as multiple runs for the same commit with different outcomes. ### Limitations The analysis was limited by the following factors: * **No access to test reports:** The bot could not access the test reports to identify which specific tests failed. * **No access to re-run information:** The bot could not determine if a job was re-run, which is a strong indicator of a flaky test. * **Limited data processing capabilities:** The bot's ability to process the large volume of workflow run data was limited by the available tools. ### Recommendations To improve the detection of flaky tests in the future, the following improvements are recommended: * **Enable test reports:** Configure the CI/CD pipeline to generate and store test reports for each run. This will make it easier to identify which tests are failing. * **Track re-runs:** Implement a mechanism to track when a job is re-run. This information should be exposed through the API. * **Improve data access:** Provide a way to query and filter workflow runs by pull request and commit SHA. This will make it easier to analyze the data and identify patterns of flakiness. ### Duplicate Check * Search query: "flaky tests" - 0 results * Search query: "test infrastructure" - 0 results * Search query: "CI/CD pipeline" - 0 results None of the existing issues cover the specific findings and recommendations in this report. --- ## Metadata - **Branch**: `test/flaky-tests-analysis` - **Commit Message**: `test(ci): document flaky test analysis findings and CI/CD improvement recommendations` - **Milestone**: *(none — backlog per Milestone Scope Guard)* - **Parent Epic**: #401 ## Subtasks - [ ] Review findings and validate methodology - [ ] Evaluate CI/CD pipeline configuration for test report generation - [ ] Implement mechanism to track job re-runs in CI - [ ] Add workflow run query/filter capability by PR and commit SHA - [ ] Document improvements in CI/CD pipeline documentation ## Definition of Done - [ ] Flaky test detection tooling improvements are implemented or tracked as follow-up issues - [ ] CI/CD pipeline generates and stores test reports per run - [ ] Re-run tracking is exposed through the API - [ ] Workflow run filtering by PR/commit SHA is available - [ ] All nox stages pass - [ ] Coverage >= 97% > **Backlog note:** This issue was discovered during autonomous operation > on milestone v3.5.0. It does not block milestone completion and has been > placed in the backlog for human review and future milestone assignment. --- **Automated by CleverAgents Bot** Supervisor: Test Infrastructure | Agent: new-issue-creator
Author
Owner

Verified — Test infrastructure task: flaky test analysis is important for CI reliability. MoSCoW: Should-have. Priority: Medium.


Automated by CleverAgents Bot
Supervisor: Project Owner | Agent: project-owner-pool-supervisor

✅ **Verified** — Test infrastructure task: flaky test analysis is important for CI reliability. MoSCoW: Should-have. Priority: Medium. --- **Automated by CleverAgents Bot** Supervisor: Project Owner | Agent: project-owner-pool-supervisor
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Reference
cleveragents/cleveragents-core#7998
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