aacb45156b
- Install Jest for unit testing with React Testing Library - Install Playwright for end-to-end testing - Configure Jest with proper TypeScript support and module mapping - Create test setup files and utilities for both unit and e2e tests Components: * Jest configuration with coverage thresholds * Playwright configuration with browser automation * Unit tests for LoginForm, AuthContext, and useSocketIO hook * E2E tests for authentication, dashboard, and agents workflows * GitHub Actions workflow for automated testing * Mock data and API utilities for consistent testing * Test documentation with best practices Testing features: - Unit tests with 70% coverage threshold - E2E tests with API mocking and user journey testing - CI/CD integration for automated test runs - Cross-browser testing support with Playwright - Authentication system testing end-to-end 🚀 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
jest-circus
The next-gen test runner for Jest
Overview
Circus is a flux-based test runner for Jest that is fast, maintainable, and simple to extend.
Circus allows you to bind to events via an optional event handler on any custom environment. See the type definitions for more information on the events and state data currently available.
import type {Event, State} from 'jest-circus';
import {TestEnvironment as NodeEnvironment} from 'jest-environment-node';
class MyCustomEnvironment extends NodeEnvironment {
//...
async handleTestEvent(event: Event, state: State) {
if (event.name === 'test_start') {
// ...
}
}
}
Mutating event or state data is currently unsupported and may cause unexpected behavior or break in a future release without warning. New events, event data, and/or state data will not be considered a breaking change and may be added in any minor release.
Note, that jest-circus test runner would pause until a promise returned from handleTestEvent gets fulfilled. However, there are a few events that do not conform to this rule, namely: start_describe_definition, finish_describe_definition, add_hook, add_test or error (for the up-to-date list you can look at SyncEvent type in the types definitions). That is caused by backward compatibility reasons and process.on('unhandledRejection', callback) signature, but that usually should not be a problem for most of the use cases.
Installation
Note: As of Jest 27,
jest-circusis the default test runner, so you do not have to install it to use it.
Install jest-circus using yarn:
yarn add --dev jest-circus
Or via npm:
npm install --save-dev jest-circus
Configure
Configure Jest to use jest-circus via the testRunner option:
{
"testRunner": "jest-circus/runner"
}
Or via CLI:
jest --testRunner='jest-circus/runner'