MCP Time Server Node

import { createTestEnvironment } from '../helpers/setup'; import { callTool } from '../helpers/tools'; import { addDays, subDays, format } from 'date-fns'; describe('days_until integration', () => { it('should calculate days until a future date', async () => { const { client, cleanup } = await createTestEnvironment(); try { const futureDate = addDays(new Date(), 7); const dateString = format(futureDate, 'yyyy-MM-dd'); const result = await callTool(client, 'days_until', { target_date: dateString, }); expect(result).toBe(7); } finally { await cleanup(); } }); it('should return 0 for today', async () => { const { client, cleanup } = await createTestEnvironment(); try { const today = format(new Date(), 'yyyy-MM-dd'); const result = await callTool(client, 'days_until', { target_date: today, }); expect(result).toBe(0); } finally { await cleanup(); } }); it('should return negative days for past dates', async () => { const { client, cleanup } = await createTestEnvironment(); try { const pastDate = subDays(new Date(), 5); const dateString = format(pastDate, 'yyyy-MM-dd'); const result = await callTool(client, 'days_until', { target_date: dateString, }); expect(result).toBe(-5); } finally { await cleanup(); } }); it('should format as "Today" when format_result is true', async () => { const { client, cleanup } = await createTestEnvironment(); try { const today = format(new Date(), 'yyyy-MM-dd'); const result = await callTool(client, 'days_until', { target_date: today, format_result: true, }); expect(result).toBe('Today'); } finally { await cleanup(); } }); it('should format as "Tomorrow" for next day', async () => { const { client, cleanup } = await createTestEnvironment(); try { const tomorrow = addDays(new Date(), 1); const dateString = format(tomorrow, 'yyyy-MM-dd'); const result = await callTool(client, 'days_until', { target_date: dateString, format_result: true, }); expect(result).toBe('Tomorrow'); } finally { await cleanup(); } }); it('should format as "in N days" for future dates', async () => { const { client, cleanup } = await createTestEnvironment(); try { const futureDate = addDays(new Date(), 10); const dateString = format(futureDate, 'yyyy-MM-dd'); const result = await callTool(client, 'days_until', { target_date: dateString, format_result: true, }); expect(result).toBe('in 10 days'); } finally { await cleanup(); } }); it('should handle specific timezone', async () => { const { client, cleanup } = await createTestEnvironment(); try { const futureDate = '2025-12-25T00:00:00'; const result = await callTool(client, 'days_until', { target_date: futureDate, timezone: 'America/New_York', }); expect(result).toBeGreaterThan(0); expect(result).toBeLessThan(365); } finally { await cleanup(); } }); it('should use UTC when timezone is empty string', async () => { const { client, cleanup } = await createTestEnvironment(); try { const tomorrow = addDays(new Date(), 1); const utcString = tomorrow.toISOString(); const result = await callTool(client, 'days_until', { target_date: utcString, timezone: '', }); expect(result).toBe(1); } finally { await cleanup(); } }); it('should throw error for missing target_date', async () => { const { client, cleanup } = await createTestEnvironment(); try { await expect(callTool(client, 'days_until', {})).rejects.toMatchObject({ code: 'TOOL_ERROR', message: expect.stringContaining('target_date is required'), }); } finally { await cleanup(); } }); it('should throw error for invalid date', async () => { const { client, cleanup } = await createTestEnvironment(); try { await expect( callTool(client, 'days_until', { target_date: 'not-a-date', }) ).rejects.toMatchObject({ code: 'TOOL_ERROR', message: expect.stringContaining('Invalid target_date format'), }); } finally { await cleanup(); } }); it('should throw error for invalid timezone', async () => { const { client, cleanup } = await createTestEnvironment(); try { await expect( callTool(client, 'days_until', { target_date: '2025-12-25', timezone: 'Invalid/Timezone', }) ).rejects.toMatchObject({ code: 'TOOL_ERROR', message: expect.stringContaining('Invalid timezone'), }); } finally { await cleanup(); } }); it('should handle Christmas countdown', async () => { const { client, cleanup } = await createTestEnvironment(); try { const result = await callTool(client, 'days_until', { target_date: '2025-12-25', format_result: false, }); expect(result).toBeGreaterThan(0); expect(result).toBeLessThan(365); } finally { await cleanup(); } }); it('should handle event planning with formatted output', async () => { const { client, cleanup } = await createTestEnvironment(); try { const eventDate = addDays(new Date(), 30); const result = await callTool(client, 'days_until', { target_date: eventDate.toISOString(), timezone: 'America/New_York', format_result: true, }); expect(result).toBe('in 30 days'); } finally { await cleanup(); } }); });