|
| 1 | +/** |
| 2 | + * Tests for error handling utilities |
| 3 | + */ |
| 4 | +import { AppError, ok, err, safeAsync, safeSync, Result } from '../error-handling'; |
| 5 | + |
| 6 | +describe('AppError', () => { |
| 7 | + test('creates error with correct properties', () => { |
| 8 | + const error = new AppError('Test error', 'TEST_ERROR', 400, { field: 'name' }); |
| 9 | + expect(error.message).toBe('Test error'); |
| 10 | + expect(error.code).toBe('TEST_ERROR'); |
| 11 | + expect(error.statusCode).toBe(400); |
| 12 | + expect(error.details).toEqual({ field: 'name' }); |
| 13 | + expect(error.name).toBe('AppError'); |
| 14 | + }); |
| 15 | + |
| 16 | + test('creates notFound error', () => { |
| 17 | + const error = AppError.notFound('User'); |
| 18 | + expect(error.statusCode).toBe(404); |
| 19 | + expect(error.code).toBe('NOT_FOUND'); |
| 20 | + expect(error.message).toBe('User not found'); |
| 21 | + }); |
| 22 | + |
| 23 | + test('creates validation error', () => { |
| 24 | + const error = AppError.validation('Invalid email', { field: 'email' }); |
| 25 | + expect(error.statusCode).toBe(400); |
| 26 | + expect(error.code).toBe('VALIDATION_ERROR'); |
| 27 | + }); |
| 28 | + |
| 29 | + test('creates unauthorized error', () => { |
| 30 | + const error = AppError.unauthorized(); |
| 31 | + expect(error.statusCode).toBe(401); |
| 32 | + }); |
| 33 | + |
| 34 | + test('creates forbidden error', () => { |
| 35 | + const error = AppError.forbidden(); |
| 36 | + expect(error.statusCode).toBe(403); |
| 37 | + }); |
| 38 | + |
| 39 | + test('serializes to JSON correctly', () => { |
| 40 | + const error = new AppError('Test', 'TEST', 400); |
| 41 | + const json = error.toJSON(); |
| 42 | + expect(json.error.code).toBe('TEST'); |
| 43 | + expect(json.error.message).toBe('Test'); |
| 44 | + }); |
| 45 | + |
| 46 | + test('is instanceof Error', () => { |
| 47 | + const error = new AppError('Test', 'TEST'); |
| 48 | + expect(error).toBeInstanceOf(Error); |
| 49 | + expect(error).toBeInstanceOf(AppError); |
| 50 | + }); |
| 51 | +}); |
| 52 | + |
| 53 | +describe('Result helpers', () => { |
| 54 | + test('ok() creates success result', () => { |
| 55 | + const result = ok(42); |
| 56 | + expect(result.success).toBe(true); |
| 57 | + if (result.success) { |
| 58 | + expect(result.data).toBe(42); |
| 59 | + } |
| 60 | + }); |
| 61 | + |
| 62 | + test('err() creates failure result', () => { |
| 63 | + const error = new AppError('fail', 'FAIL'); |
| 64 | + const result = err(error); |
| 65 | + expect(result.success).toBe(false); |
| 66 | + if (!result.success) { |
| 67 | + expect(result.error.code).toBe('FAIL'); |
| 68 | + } |
| 69 | + }); |
| 70 | +}); |
| 71 | + |
| 72 | +describe('safeAsync', () => { |
| 73 | + test('returns ok for successful async function', async () => { |
| 74 | + const result = await safeAsync(async () => 42); |
| 75 | + expect(result.success).toBe(true); |
| 76 | + if (result.success) expect(result.data).toBe(42); |
| 77 | + }); |
| 78 | + |
| 79 | + test('returns err for throwing async function', async () => { |
| 80 | + const result = await safeAsync(async () => { |
| 81 | + throw new Error('async fail'); |
| 82 | + }); |
| 83 | + expect(result.success).toBe(false); |
| 84 | + if (!result.success) expect(result.error.message).toBe('async fail'); |
| 85 | + }); |
| 86 | + |
| 87 | + test('preserves AppError type', async () => { |
| 88 | + const result = await safeAsync(async () => { |
| 89 | + throw AppError.notFound('Item'); |
| 90 | + }); |
| 91 | + expect(result.success).toBe(false); |
| 92 | + if (!result.success) { |
| 93 | + expect(result.error.code).toBe('NOT_FOUND'); |
| 94 | + expect(result.error.statusCode).toBe(404); |
| 95 | + } |
| 96 | + }); |
| 97 | +}); |
| 98 | + |
| 99 | +describe('safeSync', () => { |
| 100 | + test('returns ok for successful sync function', () => { |
| 101 | + const result = safeSync(() => 'hello'); |
| 102 | + expect(result.success).toBe(true); |
| 103 | + if (result.success) expect(result.data).toBe('hello'); |
| 104 | + }); |
| 105 | + |
| 106 | + test('returns err for throwing sync function', () => { |
| 107 | + const result = safeSync(() => { |
| 108 | + throw new Error('sync fail'); |
| 109 | + }); |
| 110 | + expect(result.success).toBe(false); |
| 111 | + }); |
| 112 | +}); |
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