portal/app/tests/Frontend/setup.ts

// Vitest setup для Vuetify в JSDOM-среде.
// Vuetify-компоненты используют ResizeObserver/IntersectionObserver/matchMedia,
// которые отсутствуют в JSDOM. Добавляем минимальные stub'ы.

class ResizeObserverStub {
    observe(): void {}
    unobserve(): void {}
    disconnect(): void {}
}

class IntersectionObserverStub {
    observe(): void {}
    unobserve(): void {}
    disconnect(): void {}
    takeRecords(): never[] {
        return [];
    }
    root = null;
    rootMargin = '';
    thresholds: number[] = [];
}

// Глобальные браузерные API заглушки для JSDOM-среды.
(globalThis as unknown as { ResizeObserver: typeof ResizeObserverStub }).ResizeObserver = ResizeObserverStub;
(globalThis as unknown as { IntersectionObserver: typeof IntersectionObserverStub }).IntersectionObserver =
    IntersectionObserverStub;

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

// CSS.supports — Vuetify проверяет наличие color-mix.
if (!window.CSS || !window.CSS.supports) {
    Object.defineProperty(window, 'CSS', {
        writable: true,
        value: { supports: () => true },
    });
}