wrolpi/app/src/setupTests.js

// Jest setup file for React Testing Library
// This file is automatically loaded by Create React App before running tests

// Polyfill TextEncoder/TextDecoder for react-router v7 compatibility
// See: https://github.com/remix-run/react-router/issues/12363
import { TextDecoder, TextEncoder } from 'util';
global.TextEncoder = TextEncoder;
global.TextDecoder = TextDecoder;

import '@testing-library/jest-dom';

// Set global Jest timeout to 30 seconds
// Tests that exceed this will fail with a clear error message identifying the failing test
jest.setTimeout(30000);

// Mock react-stl-viewer to avoid loading heavy three.js dependency in tests
jest.mock('react-stl-viewer', () => ({
    StlViewer: () => null,
}));

// Mock window.matchMedia (used by Semantic UI Media components)
Object.defineProperty(window, 'matchMedia', {
    writable: true,
    value: jest.fn().mockImplementation(query => ({
        matches: false,
        media: query,
        onchange: null,
        addListener: jest.fn(), // deprecated
        removeListener: jest.fn(), // deprecated
        addEventListener: jest.fn(),
        removeEventListener: jest.fn(),
        dispatchEvent: jest.fn(),
    })),
});

// Mock IntersectionObserver (if needed for lazy loading)
global.IntersectionObserver = class IntersectionObserver {
    constructor() {
    }

    disconnect() {
    }

    observe() {
    }

    takeRecords() {
        return [];
    }

    unobserve() {
    }
};

// Suppress console errors during tests (optional - uncomment if needed)
// const originalError = console.error;
// beforeAll(() => {
//     console.error = (...args) => {
//         if (
//             typeof args[0] === 'string' &&
//             args[0].includes('Warning: ReactDOM.render')
//         ) {
//             return;
//         }
//         originalError.call(console, ...args);
//     };
// });
//
// afterAll(() => {
//     console.error = originalError;
// });