What is a flaky test and how does this skill help?

A flaky test is one that inconsistently passes or fails without code changes, often due to timing issues. This skill replaces 'guesses' about how long a task takes with logic that waits for the actual task to complete.

Does this skill work with different testing frameworks?

Yes, the core pattern is a generic async polling function that can be implemented in TypeScript, JavaScript, Python, or any language supporting asynchronous execution.

How does this impact CI/CD pipelines?

It significantly reduces false negatives (random failures) in CI/CD, which saves developer time spent re-running pipelines and prevents unnecessary blocking of the deployment process.

Why is polling better than using setTimeout or sleep?

Polling checks for the exact condition to be met. This means tests finish as soon as possible rather than waiting for a fixed, often over-estimated, duration, which speeds up your overall test suite.

Condition-Based Waiting

Name: Condition-Based Waiting
Author: apexbusiness-systems

byapexbusiness-systems

0•

Security & Testing

Eliminates flaky tests and race conditions by replacing arbitrary timeouts with intelligent state-based condition polling.

Condition-Based Waiting is a specialized testing utility designed to resolve inconsistent pass/fail behavior caused by timing dependencies and race conditions. It provides standardized patterns to replace static delays (like setTimeout or sleep) with reactive polling mechanisms that wait for specific events, state changes, or file system updates. By waiting for actual conditions rather than guessing at duration, this skill ensures tests are resilient across different environments—such as local machines vs. CI servers—while significantly reducing total execution time by concluding tests the moment a condition is met.

Key Features

010 GitHub stars

02Built-in timeout management with descriptive error reporting

03Optimized polling intervals to balance execution speed and CPU usage

04Replaces brittle setTimeout and sleep calls with reactive polling

05Best-practice guidance for when to use polling versus justified delays

06Standardized waitFor patterns for events, states, counts, and files

Use Cases

01Accelerating test suites by eliminating unnecessary 'buffer' wait times

02Fixing flaky unit or integration tests that fail inconsistently under CI load

03Synchronizing complex asynchronous operations without explicit timing guesses

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add apexbusiness-systems/apex-omnihub condition-based-waiting

For use in Claude.ai and ChatGPT

Download Skill