Problems/Coding/Jest/Medium

Medium Jest

Coding problems · 100 total

Implement custom test environment

Create DOM manipulation tests

Implement user event testing

Create React Testing Library

Implement render component

Create screen queries

Implement fireEvent

Create userEvent

Implement waitFor

Create async utilities

Implement findBy queries

Create custom render

Implement test providers

Create mock context

Implement router mock

Create store mock

Implement API mocking

Create MSW setup

Implement request handlers

Create response resolver

Implement network error

Create GraphQL mocking

Implement Apollo mock

Create query mock

Implement mutation mock

Create subscription mock

Implement hook testing

Create renderHook

Implement hook result

Create rerender hook

Implement hook cleanup

Create custom hook test

Implement useEffect test

Create useState test

Implement useContext test

Create useReducer test

Implement useMemo test

Create useCallback test

Implement useRef test

Create component integration test

Implement form testing

Create validation testing

Implement accessibility tests

Create a11y queries

Implement ARIA testing

Create keyboard navigation test

Implement focus management test

Create screen reader test

Implement visual regression

Create snapshot testing

Implement image snapshots

Create Percy integration

Implement Chromatic

Create Storybook tests

Implement interaction tests

Create play function

Implement args testing

Create decorators testing

Implement parameterized tests

Create test matrix

Implement cross-browser tests

Create Playwright tests

Implement Cypress component test

Create E2E test suite

Implement page objects

Create test fixtures

Implement seed data

Create database fixtures

Implement transaction rollback

Create isolated tests

Implement parallel testing

Create test sharding

Implement worker threads

Create test orchestration

Implement coverage merging

Create aggregated reports

Implement branch coverage

Create mutation testing

Implement Stryker

Create mutation operators

Implement kill mutants

Create mutation score

Implement property-based testing

Create fast-check

Implement generators

Create shrinking

Implement test oracle

Create contract testing

Implement Pact

Create consumer tests

Implement provider verification

Create contract matching

Implement mock server

Create stub server

Implement WireMock

Create test doubles

Implement fake objects

Create dummy objects

Implement test spy

Create behavior verification