cometchat-react-testing

CometChat React UI Kit tests require strict init-before-render gating to prevent flaky renders. You can enforce this ordering using deterministic hoisted mocks for the SDK and component-level assertions that verify UI elements remain hidden until initialization succeeds.

Mocking the CometChat SDK in Vitest requires a canonical hoisted mock for @cometchat/chat-sdk-javascript and @cometchat/chat-uikit-react. This setup isolates init, login, and render behavior tests in a jsdom environment, ensuring reliable unit and component validation without WebSocket connections.

Yes, this testing approach supports Vite, Next.js, Astro, and React Router projects. The blueprint uses Vitest and React Testing Library for unit and component testing, while Playwright handles end-to-end chat smoke tests across these frameworks to validate real message delivery.

Running Playwright e2e chat smoke tests in CI requires dedicated test credentials kept separate from source code to prevent Auth Key leakage. The configuration validates real WebSocket messaging behavior between two users while keeping sensitive keys out of the repository.

CometChat component tests fail or behave inconsistently when css-variables.css is imported multiple times. The testing blueprint includes specific safety assertions to confirm the stylesheet is imported exactly once, preventing style injection conflicts during jsdom rendering.

Verifying visible error UI for CometChat failures requires chat-specific assertions using React Testing Library. The tests check that failure states render visible error components, including specific red or error styling checks, ensuring users receive clear feedback when SDK initialization or login encounters errors.