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Learn how Mocha’s native retry feature works, see a concrete example of retrying a flaky API call, and understand the trade‑offs and best‑practice guidelines for using it in CI pipelines.
Cypress retries can stabilize a flaky CI pipeline — or hide real bugs. Here's how to configure run-mode-only retries, pair them with assertion-driven waits, and keep flake visible.
Mocha's built-in retries (this.retries and --retries) can keep CI green despite flaky tests — if you scope them narrowly, avoid arrow functions, and treat every retry as a bug to fix.
Goal Determine whether a test marked with jest.retryTimes can be retried without re‑executing side‑effects such as database inserts, file writes, or queue publishes that occur in beforeEach / afterEach hooks or the test body itself. Constraints: Jest’s current implementation re‑runs the full test function and its per‑test lifecycle on each attempt, so any no
Cypress testRetries re-executes the whole test including before and beforeEach hooks when a run fails. The documented behavior means any real side-effecting operation performed during the attempt, such as a UI form submission or cy.request POST, can be executed again on retry. Cypress clears cookies and local storage between attempts but does not roll back s
Support limits for testRetries with side effects The goal is to clarify the documented support limits for Cypress testRetries when a test body contains actions that produce external side effects such as creating records or making network requests. Current model knowledge indicates that a failing test is re-executed in full on retry, including the commands th
Our CI pipeline integrates with BrowserStack Automate through the REST API. When a session fails, we call the retry endpoint, which creates a brand-new session with a fresh session_id while copying the original test name, tags, and custom metadata verbatim. The problem is on the reporting side: each retry appears as a separate entry in the results dashboard
I am designing a test suite that uses jest.retryTimes(2) to tolerate occasional flakiness in integration tests that write to a shared test database and filesystem fixtures. The documented behavior is clear that a failed test function is re-executed from the start, but it is unclear to me whether Jest resets the module registry or any other environment state
Preserving actionable CI alerts while reducing noise The goal is to keep CI failure notifications useful by suppressing transient failures without masking real regressions. Cypress provides automatic test retries via the retries configuration and the this.retries() API, and the Cypress Dashboard provides flaky-test analytics from recorded historical runs. Th
mocha
cypressio
jest
browserstack