Testing & QA

Write Playwright end-to-end browser tests for UI interactions and flows

Write Vitest unit and integration tests with TestEditor patterns for SDK code

Stress-test UI with worst-case data like long names, emoji and zero items

Trace a bug or failing error through the code graph to find where it starts

Explore a web app systematically to find bugs and UX issues, with reproduction steps

Test shell scripts with the Bats framework in CI and TDD workflows

Track down bugs and slow code with systematic debugging and profiling tools

Write reliable Playwright and Cypress end-to-end tests and fix flaky ones

Set up Jest, Vitest and Testing Library tests with mocks and fixtures

Find root causes by testing competing hypotheses in parallel investigations

Write pytest tests with fixtures, mocks and test-driven development

Test web apps with VoiceOver, NVDA and JAWS for assistive technology support

Test Temporal Python workflows with pytest, time skipping and mocks

Create test strategies and QA task breakdowns for a GitHub project

Close a bug with a receipt recording the diagnosis, fix and verified status

Turn a vague or intermittent bug report into a minimal reproduction first

Write Oracle integration tests for .NET data access before a PostgreSQL migration

Find and fix flaky Cypress patterns and APIs removed in Cypress 12 to 16

Find the cause of Java bugs with JDWP, jdb, IDE attach and stack trace reading

Write and fix Java unit tests with JUnit, AssertJ, Mockito and coverage tools

Write reliable Java integration tests with Testcontainers and Docker Compose

Write JavaScript and TypeScript tests with Jest, mocks and clear test structure

Migrate PowerShell Pester test suites across major versions from v3 to v6

Migrate Pester Should -Be assertions to the Should-Be syntax of Pester 6

Plan integration tests for .NET data access during an Oracle to PostgreSQL migration

Explore a website through Playwright MCP to find pages and flows worth testing

Generate a Playwright end-to-end test from a plain scenario description

Run pytest with coverage, find untested lines and raise coverage toward 100%

Audit a codebase's quality end to end with spec-traced tests and a bug report

Write Quarkus tests with Dev Services containers, QuarkusTest and RestAssured

Rewrite Enzyme tests as React Testing Library tests during a React 18 upgrade

Update React tests for React 19 with act imports and StrictMode call count changes

Scaffold an xUnit integration test project against Oracle before a PostgreSQL migration

Run exploratory QA on a website for bugs, smoke tests and accessibility issues

Choose and write Spring Boot 4 tests with JUnit 6 and AssertJ for each situation

Audit a repo for missing, weak or stale tests across features, routes and services

Write Vue 3 and Pinia unit tests with Vitest, createTestingPinia and black-box assertions

Trace a CI failure to its commit and author and decide if it is flaky or broken

Check that resolved inbox reports stayed fixed and flag fixes that did not hold

Send synthetic first-visit traffic to a URL and confirm pageview events arrive

Simulate a returning visitor session to confirm cookies and distinct IDs persist

Triage visual regression runs that gate PRs and explain what changed on screen

Drive a real browser over pages and report which PostHog events actually arrive

Diagnose a session or repo from logs, traces and focused reproduction steps

Build features test-first with one red-green cycle at a time at agreed seams

Trace a bug by testing competing hypotheses against evidence in parallel

Confirm a change really works before you say the task is complete

Compare screenshots against reference designs and return a structured QA verdict

Fuzz C and C++ code with AFL++ in CI to catch memory corruption before release