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| 1 | +import { createFetchWithInit, type FetchLike, normalizeHeaders } from '../../src/shared/transport.js'; |
| 2 | + |
| 3 | +describe('normalizeHeaders', () => { |
| 4 | + test('returns empty object for undefined', () => { |
| 5 | + expect(normalizeHeaders(undefined)).toEqual({}); |
| 6 | + }); |
| 7 | + |
| 8 | + test('handles Headers instance', () => { |
| 9 | + const headers = new Headers({ |
| 10 | + 'x-foo': 'bar', |
| 11 | + 'content-type': 'application/json' |
| 12 | + }); |
| 13 | + expect(normalizeHeaders(headers)).toEqual({ |
| 14 | + 'x-foo': 'bar', |
| 15 | + 'content-type': 'application/json' |
| 16 | + }); |
| 17 | + }); |
| 18 | + |
| 19 | + test('handles array of tuples', () => { |
| 20 | + const headers: [string, string][] = [ |
| 21 | + ['x-foo', 'bar'], |
| 22 | + ['x-baz', 'qux'] |
| 23 | + ]; |
| 24 | + expect(normalizeHeaders(headers)).toEqual({ |
| 25 | + 'x-foo': 'bar', |
| 26 | + 'x-baz': 'qux' |
| 27 | + }); |
| 28 | + }); |
| 29 | + |
| 30 | + test('handles plain object', () => { |
| 31 | + const headers = { 'x-foo': 'bar', 'x-baz': 'qux' }; |
| 32 | + expect(normalizeHeaders(headers)).toEqual({ |
| 33 | + 'x-foo': 'bar', |
| 34 | + 'x-baz': 'qux' |
| 35 | + }); |
| 36 | + }); |
| 37 | + |
| 38 | + test('returns a shallow copy for plain objects', () => { |
| 39 | + const headers = { 'x-foo': 'bar' }; |
| 40 | + const result = normalizeHeaders(headers); |
| 41 | + expect(result).not.toBe(headers); |
| 42 | + expect(result).toEqual(headers); |
| 43 | + }); |
| 44 | +}); |
| 45 | + |
| 46 | +describe('createFetchWithInit', () => { |
| 47 | + test('returns baseFetch unchanged when no baseInit provided', () => { |
| 48 | + const mockFetch: FetchLike = vi.fn(); |
| 49 | + const result = createFetchWithInit(mockFetch); |
| 50 | + expect(result).toBe(mockFetch); |
| 51 | + }); |
| 52 | + |
| 53 | + test('passes baseInit to fetch when no call init provided', async () => { |
| 54 | + const mockFetch: FetchLike = vi.fn(); |
| 55 | + const baseInit: RequestInit = { |
| 56 | + method: 'POST', |
| 57 | + credentials: 'include' |
| 58 | + }; |
| 59 | + |
| 60 | + const wrappedFetch = createFetchWithInit(mockFetch, baseInit); |
| 61 | + await wrappedFetch('https://example.com'); |
| 62 | + |
| 63 | + expect(mockFetch).toHaveBeenCalledWith( |
| 64 | + 'https://example.com', |
| 65 | + expect.objectContaining({ |
| 66 | + method: 'POST', |
| 67 | + credentials: 'include' |
| 68 | + }) |
| 69 | + ); |
| 70 | + }); |
| 71 | + |
| 72 | + test('merges baseInit with call init, call init wins for non-header fields', async () => { |
| 73 | + const mockFetch: FetchLike = vi.fn(); |
| 74 | + const baseInit: RequestInit = { |
| 75 | + method: 'POST', |
| 76 | + credentials: 'include' |
| 77 | + }; |
| 78 | + |
| 79 | + const wrappedFetch = createFetchWithInit(mockFetch, baseInit); |
| 80 | + await wrappedFetch('https://example.com', { method: 'PUT' }); |
| 81 | + |
| 82 | + expect(mockFetch).toHaveBeenCalledWith( |
| 83 | + 'https://example.com', |
| 84 | + expect.objectContaining({ |
| 85 | + method: 'PUT', |
| 86 | + credentials: 'include' |
| 87 | + }) |
| 88 | + ); |
| 89 | + }); |
| 90 | + |
| 91 | + test('merges headers from both base and call init', async () => { |
| 92 | + const mockFetch: FetchLike = vi.fn(); |
| 93 | + const baseInit: RequestInit = { |
| 94 | + headers: { 'x-base': 'base-value', 'x-shared': 'base' } |
| 95 | + }; |
| 96 | + |
| 97 | + const wrappedFetch = createFetchWithInit(mockFetch, baseInit); |
| 98 | + await wrappedFetch('https://example.com', { |
| 99 | + headers: { 'x-call': 'call-value', 'x-shared': 'call' } |
| 100 | + }); |
| 101 | + |
| 102 | + expect(mockFetch).toHaveBeenCalledWith( |
| 103 | + 'https://example.com', |
| 104 | + expect.objectContaining({ |
| 105 | + headers: { |
| 106 | + 'x-base': 'base-value', |
| 107 | + 'x-call': 'call-value', |
| 108 | + 'x-shared': 'call' |
| 109 | + } |
| 110 | + }) |
| 111 | + ); |
| 112 | + }); |
| 113 | + |
| 114 | + test('uses baseInit headers when call init has no headers', async () => { |
| 115 | + const mockFetch: FetchLike = vi.fn(); |
| 116 | + const baseInit: RequestInit = { |
| 117 | + headers: { 'x-base': 'base-value' } |
| 118 | + }; |
| 119 | + |
| 120 | + const wrappedFetch = createFetchWithInit(mockFetch, baseInit); |
| 121 | + await wrappedFetch('https://example.com', { method: 'POST' }); |
| 122 | + |
| 123 | + expect(mockFetch).toHaveBeenCalledWith( |
| 124 | + 'https://example.com', |
| 125 | + expect.objectContaining({ |
| 126 | + method: 'POST', |
| 127 | + headers: { 'x-base': 'base-value' } |
| 128 | + }) |
| 129 | + ); |
| 130 | + }); |
| 131 | + |
| 132 | + test('handles URL object as first argument', async () => { |
| 133 | + const mockFetch: FetchLike = vi.fn(); |
| 134 | + const baseInit: RequestInit = { method: 'GET' }; |
| 135 | + |
| 136 | + const wrappedFetch = createFetchWithInit(mockFetch, baseInit); |
| 137 | + const url = new URL('https://example.com/path'); |
| 138 | + await wrappedFetch(url); |
| 139 | + |
| 140 | + expect(mockFetch).toHaveBeenCalledWith(url, expect.objectContaining({ method: 'GET' })); |
| 141 | + }); |
| 142 | + |
| 143 | + test('passes all baseInit properties when call init is empty object', async () => { |
| 144 | + const mockFetch: FetchLike = vi.fn(); |
| 145 | + const baseInit: RequestInit = { |
| 146 | + method: 'POST', |
| 147 | + credentials: 'include', |
| 148 | + headers: { 'x-base': 'value' } |
| 149 | + }; |
| 150 | + |
| 151 | + const wrappedFetch = createFetchWithInit(mockFetch, baseInit); |
| 152 | + await wrappedFetch('https://example.com', {}); |
| 153 | + |
| 154 | + expect(mockFetch).toHaveBeenCalledWith( |
| 155 | + 'https://example.com', |
| 156 | + expect.objectContaining({ |
| 157 | + method: 'POST', |
| 158 | + credentials: 'include', |
| 159 | + headers: { 'x-base': 'value' } |
| 160 | + }) |
| 161 | + ); |
| 162 | + }); |
| 163 | + |
| 164 | + test('passes Headers instance through when call init has no headers', async () => { |
| 165 | + const mockFetch: FetchLike = vi.fn(); |
| 166 | + const baseHeaders = new Headers({ 'x-base': 'value' }); |
| 167 | + const baseInit: RequestInit = { |
| 168 | + headers: baseHeaders |
| 169 | + }; |
| 170 | + |
| 171 | + const wrappedFetch = createFetchWithInit(mockFetch, baseInit); |
| 172 | + await wrappedFetch('https://example.com', { method: 'POST' }); |
| 173 | + |
| 174 | + expect(mockFetch).toHaveBeenCalledWith( |
| 175 | + 'https://example.com', |
| 176 | + expect.objectContaining({ |
| 177 | + method: 'POST', |
| 178 | + headers: baseHeaders |
| 179 | + }) |
| 180 | + ); |
| 181 | + }); |
| 182 | +}); |
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