// CRITICALimport { describe, it, expect, vi, beforeEach } from 'vitest';import { fetchGPUs, fetchRecipes, fetchStatus, fetchConfig, fetchLifetimeMetrics } from './api'; // Mock fetchglobal.fetch = vi.fn(); describe('API Functions', () => {  beforeEach(() => {    vi.clearAllMocks();    process.env.VLLM_STUDIO_URL = 'http://localhost:8080';  });   describe('fetchGPUs', () => {    it('returns GPU array on success', async () => {      const mockGPUs = [        { index: 0, name: 'NVIDIA A100', memory_used: 10, memory_total: 40, utilization: 50 },      ];       (global.fetch as unknown as ReturnType<typeof vi.fn>).mockResolvedValueOnce({        ok: true,        json: async () => ({ gpus: mockGPUs }),      });       const gpus = await fetchGPUs();      expect(gpus).toEqual(mockGPUs);    });     it('returns empty array on failure', async () => {      (global.fetch as unknown as ReturnType<typeof vi.fn>).mockRejectedValueOnce(new Error('Network error'));       const gpus = await fetchGPUs();      expect(gpus).toEqual([]);    });     it('returns empty array when response not ok', async () => {      (global.fetch as unknown as ReturnType<typeof vi.fn>).mockResolvedValueOnce({        ok: false,      });       const gpus = await fetchGPUs();      expect(gpus).toEqual([]);    });  });   describe('fetchRecipes', () => {    it('returns recipes array on success', async () => {      const mockRecipes = [        { id: 'llama-3-8b', name: 'Llama 3 8B', backend: 'vllm', model_path: '/models/llama' },      ];       (global.fetch as unknown as ReturnType<typeof vi.fn>).mockResolvedValueOnce({        ok: true,        json: async () => mockRecipes,      });       const recipes = await fetchRecipes();      expect(recipes).toEqual(mockRecipes);    });     it('returns empty array on failure', async () => {      (global.fetch as unknown as ReturnType<typeof vi.fn>).mockRejectedValueOnce(new Error('Network error'));       const recipes = await fetchRecipes();      expect(recipes).toEqual([]);    });  });   describe('fetchStatus', () => {    it('returns status with running true', async () => {      const mockStatus = {        running: true,        launching: false,        process: { pid: 1234, backend: 'vllm', port: 8000 },      };       (global.fetch as unknown as ReturnType<typeof vi.fn>).mockResolvedValueOnce({        ok: true,        json: async () => mockStatus,      });       const status = await fetchStatus();      expect(status.running).toBe(true);      expect(status.backend).toBe('vllm');      expect(status.pid).toBe(1234);    });     it('returns status with running false', async () => {      (global.fetch as unknown as ReturnType<typeof vi.fn>).mockResolvedValueOnce({        ok: true,        json: async () => ({ running: false, launching: false }),      });       const status = await fetchStatus();      expect(status.running).toBe(false);    });     it('returns default status on failure', async () => {      (global.fetch as unknown as ReturnType<typeof vi.fn>).mockRejectedValueOnce(new Error('Network error'));       const status = await fetchStatus();      expect(status.running).toBe(false);    });  });});