import { getSiteStrings } from '@launch/api/DataApi'; const fallback = { aiHeaders: [], aiBlogTitles: [] }; const originalFetch = global.fetch; describe('getSiteStrings', () => { beforeEach(() => { global.fetch = jest.fn(); }); afterEach(() => { jest.clearAllMocks(); global.fetch = originalFetch; }); it('returns parsed JSON when fetch succeeds with valid data', async () => { const mockResponse = { aiHeaders: ['Header 1', 'Header 2'], aiBlogTitles: ['Post A', 'Post B'], }; global.fetch.mockResolvedValueOnce({ ok: true, json: () => mockResponse, }); const result = await getSiteStrings({ foo: 'bar' }); expect(result).toEqual(mockResponse); expect(global.fetch).toHaveBeenCalledTimes(1); }); it('returns fallback when first fetch throws and second returns not ok', async () => { global.fetch .mockRejectedValueOnce(new Error('Network error')) .mockResolvedValueOnce({ ok: false }); const result = await getSiteStrings({ foo: 'bar' }); expect(result).toEqual(fallback); expect(global.fetch).toHaveBeenCalledTimes(2); }); it('returns fallback when both fetch attempts throw', async () => { global.fetch .mockRejectedValueOnce(new Error('Network error')) .mockRejectedValueOnce(new Error('Still failing')); const result = await getSiteStrings({ foo: 'bar' }); expect(result).toEqual(fallback); expect(global.fetch).toHaveBeenCalledTimes(2); }); it('returns fallback when response is ok but JSON parsing fails', async () => { global.fetch.mockResolvedValueOnce({ ok: true, json: () => { throw new Error('Invalid JSON'); }, }); const result = await getSiteStrings({ foo: 'bar' }); expect(result).toEqual(fallback); expect(global.fetch).toHaveBeenCalledTimes(1); }); it('returns fallback when response is ok but payload lacks aiHeaders', async () => { global.fetch.mockResolvedValueOnce({ ok: true, json: () => ({ aiBlogTitles: ['Only titles, no headers'] }), }); const result = await getSiteStrings({ foo: 'bar' }); expect(result).toEqual(fallback); expect(global.fetch).toHaveBeenCalledTimes(1); }); it('returns fallback when fetch resolves with undefined response', async () => { global.fetch.mockResolvedValueOnce(undefined); const result = await getSiteStrings({ foo: 'bar' }); expect(result).toEqual(fallback); expect(global.fetch).toHaveBeenCalledTimes(1); }); it('returns fallback when response ok=false without throwing (no retry by design)', async () => { global.fetch.mockResolvedValueOnce({ ok: false }); const result = await getSiteStrings({ foo: 'bar' }); expect(result).toEqual(fallback); expect(global.fetch).toHaveBeenCalledTimes(1); }); });