HEYS-v2/
├── TESTS/
│   ├── e2e/                    # Playwright e2e тесты
│   │   ├── food-logging.spec.ts
│   │   ├── user-authentication.spec.ts
│   │   └── basic.spec.ts
│   ├── integration/            # Интеграционные
│   └── suites/                 # Тематические наборы
├── packages/
│   └── core/src/__tests__/     # Unit тесты пакета
└── vitest.config.ts            # Конфигурация Vitest

# Все тесты
pnpm run test:all

# Только unit (Vitest)
pnpm test

# Только e2e (Playwright)
pnpm test:e2e

# Конкретный файл
pnpm vitest run path/to/file.test.ts

import { describe, expect, it, vi } from 'vitest';

describe('MyModule', () => {
  it('should do something', () => {
    const result = myFunction(input);
    expect(result).toBe(expected);
  });

  it('should handle edge case', () => {
    expect(() => myFunction(null)).toThrow();
  });
});

import { test, expect } from '@playwright/test';

test.describe('Feature Name', () => {
  test.beforeEach(async ({ page }) => {
    await page.goto('/');
  });

  test('user can perform action', async ({ page }) => {
    await page.click('[data-testid="button"]');
    await expect(page.locator('[data-testid="result"]')).toBeVisible();
  });
});

<!-- Кнопки -->
<button data-testid="save-food-entry">Save</button>
<button data-testid="add-food-button">Add</button>

<!-- Инпуты -->
<input data-testid="food-name-input" />
<input data-testid="quantity-input" />

<!-- Контейнеры -->
<div data-testid="dashboard">...</div>
<div data-testid="food-entry">...</div>