Insufficient Rendering Count

Oct 13, 2025 by wbrum.org 62 views

Understanding the Issue

In the world of software testing, failures can occur due to various reasons. One such reason is the failure of a test on a tracked branch. This article aims to provide a detailed analysis of a failed test, specifically the Chrome UI Functional Tests, and explore the possible causes behind it.

The Failed Test

The test in question is visualize app new charts library visualize ciGroup7 pie chart multi series slice "before all" hook for "should show correct chart". This test is part of the Chrome UI Functional Tests, which are designed to ensure the correctness and functionality of the Chrome UI.

Error Message

The error message associated with this failed test is:

Error: timed out waiting for rendering count to be greater than or equal to [5]
    at onFailure (test/common/services/retry/retry_for_truthy.ts:39:13)
    at retryForSuccess (test/common/services/retry/retry_for_success.ts:59:13)
    at retryForTruthy (test/common/services/retry/retry_for_truthy.ts:27:3)
    at RetryService.waitFor (test/common/services/retry/retry.ts:59:5)
    at VisualizeChartPageObject.waitForRenderingCount (test/functional/page_objects/visualize_chart_page.ts:210:5)
    at VisualizeEditorPageObject.clickGo (test/functional/page_objects/visualize_editor_page.ts:74:5)
    at Context.<anonymous> (test/functional/apps/visualize/_pie_chart.ts:349:9)
    at Object.apply (node_modules/@kbn/test/target_node/functional_test_runner/lib/mocha/wrap_function.js:78:16)

First Failure

The first failure of this test occurred on the kibana-es-forward-compatibility-testing - 7.17 build.

Analyzing the Error

The error message indicates that the test timed out waiting for the rendering count to be greater than or equal to 5. This suggests that the test is waiting for the chart to render, but it is taking too long.

Possible Causes

There are several possible causes behind this failure:

Slow Chart Rendering: The chart rendering process might be slow, causing the test to timeout.
Insufficient Rendering Count: The test might be expecting a higher rendering count than what is actually being rendered.
Test Configuration Issues: There might be issues with the test configuration, such as incorrect timeouts or wait times.

Resolving the Issue

To resolve this issue, we need to investigate the possible causes and take corrective action. Here are some steps we can take:

Optimize Chart Rendering: We can optimize the chart rendering process to make it faster.
Adjust Rendering Count: We can adjust the rendering count to match the actual rendering count.
Review Test Configuration: We can review the test configuration to ensure that it is correct and up-to-date.

Conclusion

In conclusion, the failed test visualize app new charts library visualize ciGroup7 pie chart multi series slice "before all" hook for "should show correct chart" is a complex issue that requires careful analysis and troubleshooting. By understanding the error message and possible causes, we can take corrective action to resolve the issue and ensure the correctness and functionality of the Chrome UI.

Recommendations

Based on our analysis, we recommend the following:

Investigate Chart Rendering: We recommend investigating the chart rendering process to identify any bottlenecks or areas for improvement.
Review Test Configuration: We recommend reviewing the test configuration to ensure that it is correct and up-to-date.
Adjust Rendering Count: We recommend adjusting the rendering count to match the actual rendering count.

Future Work

In the future, we plan to:

Optimize Chart Rendering: We plan to optimize the chart rendering process to make it faster.
Improve Test Configuration: We plan to improve the test configuration to ensure that it is correct and up-to-date.
Enhance Test Coverage: We plan to enhance test coverage to ensure that all scenarios are covered.

Appendix

For further information, please refer to the following resources:

Chrome UI Functional Tests
Retry Service
Visualize Chart Page Object
Failing Test: Chrome UI Functional Tests - Q&A =====================================================

Q: What is the Chrome UI Functional Tests?

A: The Chrome UI Functional Tests are a set of tests designed to ensure the correctness and functionality of the Chrome UI. These tests are part of the Kibana testing framework and are used to verify that the Chrome UI is working as expected.

Q: What is the purpose of the failed test?

A: The failed test visualize app new charts library visualize ciGroup7 pie chart multi series slice "before all" hook for "should show correct chart" is designed to test the functionality of the pie chart in the Chrome UI. The test is checking that the chart is rendered correctly and that the user can interact with it as expected.

Q: What is the error message associated with the failed test?

A: The error message associated with the failed test is:

Error: timed out waiting for rendering count to be greater than or equal to [5]
    at onFailure (test/common/services/retry/retry_for_truthy.ts:39:13)
    at retryForSuccess (test/common/services/retry/retry_for_success.ts:59:13)
    at retryForTruthy (test/common/services/retry/retry_for_truthy.ts:27:3)
    at RetryService.waitFor (test/common/services/retry/retry.ts:59:5)
    at VisualizeChartPageObject.waitForRenderingCount (test/functional/page_objects/visualize_chart_page.ts:210:5)
    at VisualizeEditorPageObject.clickGo (test/functional/page_objects/visualize_editor_page.ts:74:5)
    at Context.<anonymous> (test/functional/apps/visualize/_pie_chart.ts:349:9)
    at Object.apply (node_modules/@kbn/test/target_node/functional_test_runner/lib/mocha/wrap_function.js:78:16)

Q: What is the possible cause of the failed test?

A: There are several possible causes behind the failed test, including:

Slow Chart Rendering: The chart rendering process might be slow, causing the test to timeout.
Insufficient Rendering Count: The test might be expecting a higher rendering count than what is actually being rendered.
Test Configuration Issues: There might be issues with the test configuration, such as incorrect timeouts or wait times.

Q: How can the issue be resolved?

A: To resolve the issue, we need to investigate the possible causes and take corrective action. Here are some steps we can take:

Optimize Chart Rendering: We can optimize the chart rendering process to make it faster.
Adjust Rendering Count: We can adjust the rendering count to match the actual rendering count.
Review Test Configuration: We can review the test configuration to ensure that it is correct and up-to-date.

Q: What are the recommendations for resolving the issue?

A: Based on our analysis, we recommend the following:

Investigate Chart Rendering: We recommend investigating the chart rendering process to identify any bottlenecks or areas for improvement.
Review Test Configuration: We recommend reviewing the test configuration to ensure that it is correct and up-to-date.
Adjust Rendering Count: We recommend adjusting the rendering count to match the actual rendering count.

Q: What is the future work plan for resolving the issue?

A: In the future, we plan to:

Optimize Chart Rendering: We plan to optimize the chart rendering process to make it faster.
Improve Test Configuration: We plan to improve the test configuration to ensure that it is correct and up-to-date.
Enhance Test Coverage: We plan to enhance test coverage to ensure that all scenarios are covered.

Q: Where can I find more information about the Chrome UI Functional Tests?

A: For further information, please refer to the following resources: