Metro MCP

import { describe, it, expect } from 'vitest'; import { validateStationCode, validateLineCode, WMATAError } from './error-handler'; describe('validateStationCode', () => { it('should accept valid station codes', () => { expect(() => validateStationCode('A01')).not.toThrow(); expect(() => validateStationCode('C15')).not.toThrow(); expect(() => validateStationCode('N06')).not.toThrow(); }); it('should handle case insensitive input', () => { expect(() => validateStationCode('a01')).not.toThrow(); expect(() => validateStationCode('c15')).not.toThrow(); }); it('should trim whitespace', () => { expect(() => validateStationCode(' A01 ')).not.toThrow(); expect(() => validateStationCode('\tC15\n')).not.toThrow(); }); it('should reject invalid formats', () => { expect(() => validateStationCode('ABC')).toThrow(WMATAError); expect(() => validateStationCode('A1')).toThrow(WMATAError); expect(() => validateStationCode('123')).toThrow(WMATAError); expect(() => validateStationCode('')).toThrow(WMATAError); expect(() => validateStationCode('A001')).toThrow(WMATAError); }); it('should return normalized uppercase code', () => { expect(validateStationCode('a01')).toBe('A01'); expect(validateStationCode(' c15 ')).toBe('C15'); }); }); describe('validateLineCode', () => { it('should accept valid line codes', () => { expect(() => validateLineCode('RD')).not.toThrow(); expect(() => validateLineCode('BL')).not.toThrow(); expect(() => validateLineCode('YL')).not.toThrow(); expect(() => validateLineCode('OR')).not.toThrow(); expect(() => validateLineCode('GR')).not.toThrow(); expect(() => validateLineCode('SV')).not.toThrow(); }); it('should handle case insensitive input', () => { expect(() => validateLineCode('rd')).not.toThrow(); expect(() => validateLineCode('Bl')).not.toThrow(); }); it('should trim whitespace', () => { expect(() => validateLineCode(' RD ')).not.toThrow(); expect(() => validateLineCode('\tBL\n')).not.toThrow(); }); it('should reject invalid line codes', () => { expect(() => validateLineCode('XX')).toThrow(WMATAError); expect(() => validateLineCode('RED')).toThrow(WMATAError); expect(() => validateLineCode('R')).toThrow(WMATAError); expect(() => validateLineCode('')).toThrow(WMATAError); }); it('should return normalized uppercase code', () => { expect(validateLineCode('rd')).toBe('RD'); expect(validateLineCode(' bl ')).toBe('BL'); }); }); describe('WMATAError', () => { it('should create error with message and statusCode', () => { const error = new WMATAError('Test error', 400); expect(error.message).toBe('Test error'); expect(error.statusCode).toBe(400); expect(error).toBeInstanceOf(Error); }); it('should handle optional statusCode', () => { const error = new WMATAError('Test error'); expect(error.statusCode).toBeUndefined(); }); });