Stirling-PDF/frontend/editor/src/portal/setupTests.ts

import "@testing-library/jest-dom";
import { vi } from "vitest";

// The shims `src/index.tsx` installs - see core/setupTests.ts.
import "@app/utils/engineShims";

// Mirrors the editor's setup: jsdom lacks a handful of browser APIs that shared
// components (Mantine FocusTrap, responsive helpers) touch on render.

class LocalStorageMock implements Storage {
  private store: Record<string, string> = {};

  get length(): number {
    return Object.keys(this.store).length;
  }

  clear(): void {
    this.store = {};
  }

  getItem(key: string): string | null {
    return this.store[key] ?? null;
  }

  key(index: number): string | null {
    return Object.keys(this.store)[index] ?? null;
  }

  removeItem(key: string): void {
    delete this.store[key];
  }

  setItem(key: string, value: string): void {
    this.store[key] = value;
  }
}

Object.defineProperty(window, "localStorage", {
  value: new LocalStorageMock(),
  writable: true,
});

global.ResizeObserver = vi.fn().mockImplementation(() => ({
  observe: vi.fn(),
  unobserve: vi.fn(),
  disconnect: vi.fn(),
}));

global.IntersectionObserver = vi.fn().mockImplementation(() => ({
  observe: vi.fn(),
  unobserve: vi.fn(),
  disconnect: vi.fn(),
}));

Object.defineProperty(window, "matchMedia", {
  writable: true,
  value: vi.fn().mockImplementation((query: string) => ({
    matches: false,
    media: query,
    onchange: null,
    addListener: vi.fn(),
    removeListener: vi.fn(),
    addEventListener: vi.fn(),
    removeEventListener: vi.fn(),
    dispatchEvent: vi.fn(),
  })),
});