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Learn the fundamentals of React Testing Library - how to render components, query elements, and write tests that focus on user behavior rather than implementation details.
Master testing user interactions in React - learn the differences between fireEvent and userEvent, and how to test clicks, inputs, forms, and keyboard events.
Learn how to test React components that fetch data using Mock Service Worker (MSW) - a powerful approach to mocking API calls at the network level.
Learn how to test React custom hooks using renderHook from Testing Library - covering state updates, async operations, and common patterns.
Learn effective mocking strategies for React tests - from mocking modules and components to spying on functions and handling common scenarios.
Understand when and how to use snapshot testing effectively in React - including inline snapshots, custom serializers, and common anti-patterns to avoid.
Learn how to write end-to-end tests for React applications using Playwright - covering setup, selectors, assertions, and testing real user workflows.
Learn the fundamentals of Cypress - installation, test structure, basic commands, and writing your first end-to-end test.
Master Cypress selectors, command chaining, and custom commands to write clean, maintainable E2E tests.
Master cy.intercept for network mocking in Cypress - intercept requests, stub responses, test error states, and wait for API calls.
Learn how to work with variables, closures, and aliases in Cypress to share data between commands and tests effectively.
Master debugging techniques in Cypress including time travel, command logs, snapshots, and browser DevTools integration.
Compare Cypress and Playwright across architecture, features, performance, and use cases to choose the best E2E testing framework for your project.
Master TDD with Claude Code - learn how writing tests first creates a precise specification that Claude implements accurately, reducing bugs and rework.