| 1 | import { afterEach, describe, expect, it, vi } from 'vitest' |
| 2 | import { |
| 3 | resolveImageGenerationProvider, |
| 4 | type ResolvedImageModelConfig |
| 5 | } from '../../../src/main/agent-runtime/provider/image' |
| 6 | |
| 7 | const seedreamAdapter = resolveImageGenerationProvider('seedream') |
| 8 | |
| 9 | const pngBase64 = |
| 10 | 'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8BQDwAFgwJ/lK3G1wAAAABJRU5ErkJggg==' |
| 11 | const pngBytes = Buffer.from(pngBase64, 'base64') |
| 12 | |
| 13 | const createConfig = ( |
| 14 | modelConfig: Record<string, unknown> = {} |
| 15 | ): ResolvedImageModelConfig => ({ |
| 16 | id: 'seedream-config', |
| 17 | name: 'Seedream', |
| 18 | provider: 'seedream', |
| 19 | active: true, |
| 20 | modelConfig: { |
| 21 | apiKey: 'ark-key', |
| 22 | model: 'doubao-seedream-5-0-260128', |
| 23 | ...modelConfig |
| 24 | } |
| 25 | }) |
| 26 | |
| 27 | describe('seedream image generation provider', () => { |
| 28 | afterEach(() => { |
| 29 | vi.restoreAllMocks() |
| 30 | vi.unstubAllGlobals() |
| 31 | }) |
| 32 | |
| 33 | it('posts an Ark image generation request and reads base64 images', async () => { |
| 34 | const fetchMock = vi.fn().mockResolvedValue( |
| 35 | new Response( |
| 36 | JSON.stringify({ |
| 37 | data: [{ b64_json: pngBase64 }] |
| 38 | }), |
| 39 | { |
| 40 | status: 200, |
| 41 | headers: { 'content-type': 'application/json' } |
| 42 | } |
| 43 | ) |
| 44 | ) |
| 45 | vi.stubGlobal('fetch', fetchMock) |
| 46 | |
| 47 | const results = await seedreamAdapter.generate( |
| 48 | createConfig({ response_format: 'b64_json', sizes: ['1K', '2K', '4K'] }), |
| 49 | { |
| 50 | prompt: 'a clean presentation background', |
| 51 | size: '2K', |
| 52 | count: 1, |
| 53 | negativePrompt: 'low quality', |
| 54 | seed: 42 |
| 55 | } |
| 56 | ) |
| 57 | |
| 58 | expect(fetchMock).toHaveBeenCalledTimes(1) |
| 59 | const [endpoint, init] = fetchMock.mock.calls[0] as [string, RequestInit] |
| 60 | expect(endpoint).toBe('https://ark.cn-beijing.volces.com/api/v3/images/generations') |
| 61 | expect(init.method).toBe('POST') |
| 62 | expect(init.headers).toMatchObject({ |
| 63 | authorization: 'Bearer ark-key', |
| 64 | 'content-type': 'application/json' |
| 65 | }) |
| 66 | const body = JSON.parse(String(init.body)) |
| 67 | expect(body).toMatchObject({ |
| 68 | model: 'doubao-seedream-5-0-260128', |
| 69 | prompt: 'a clean presentation background', |
| 70 | size: '2K', |
| 71 | n: 1, |
| 72 | response_format: 'b64_json', |
| 73 | sequential_image_generation: 'disabled', |
| 74 | stream: false, |
| 75 | negative_prompt: 'low quality', |
| 76 | seed: 42 |
| 77 | }) |
| 78 | expect(body).not.toHaveProperty('sizes') |
| 79 | expect(results).toHaveLength(1) |
| 80 | expect(results[0].mimeType).toBe('image/png') |
| 81 | expect(results[0].extension).toBe('.png') |
| 82 | expect(results[0].bytes.length).toBeGreaterThan(0) |
| 83 | }) |
| 84 | |
| 85 | it('downloads images from Seedream url results and ignores returned size metadata', async () => { |
| 86 | const fetchMock = vi |
| 87 | .fn() |
| 88 | .mockResolvedValueOnce( |
| 89 | new Response( |
| 90 | JSON.stringify({ |
| 91 | model: 'doubao-seedream-5-0-260128', |
| 92 | created: 1757321139, |
| 93 | data: [ |
| 94 | { |
| 95 | url: 'https://example.test/seedream.png', |
| 96 | size: '3104x1312' |
| 97 | } |
| 98 | ], |
| 99 | usage: { |
| 100 | generated_images: 1, |
| 101 | output_tokens: 10, |
| 102 | total_tokens: 10 |
| 103 | } |
| 104 | }), |
| 105 | { status: 200 } |
| 106 | ) |
| 107 | ) |
| 108 | .mockResolvedValueOnce( |
| 109 | new Response(pngBytes, { |
| 110 | status: 200, |
| 111 | headers: { 'content-type': 'image/png' } |
| 112 | }) |
| 113 | ) |
| 114 | vi.stubGlobal('fetch', fetchMock) |
| 115 | |
| 116 | const results = await seedreamAdapter.generate(createConfig(), { |
| 117 | prompt: 'hero image', |
| 118 | size: '2K', |
| 119 | count: 1 |
| 120 | }) |
| 121 | |
| 122 | expect(fetchMock).toHaveBeenCalledTimes(2) |
| 123 | expect(fetchMock.mock.calls[1][0]).toBe('https://example.test/seedream.png') |
| 124 | const [, init] = fetchMock.mock.calls[0] as [string, RequestInit] |
| 125 | expect(JSON.parse(String(init.body))).toMatchObject({ |
| 126 | response_format: 'url', |
| 127 | size: '2K' |
| 128 | }) |
| 129 | expect(results).toHaveLength(1) |
| 130 | expect(results[0].mimeType).toBe('image/png') |
| 131 | expect(results[0].bytes.equals(pngBytes)).toBe(true) |
| 132 | }) |
| 133 | |
| 134 | it('allows endpoint, headers, and request body overrides from model config', async () => { |
| 135 | const fetchMock = vi.fn().mockResolvedValue( |
| 136 | new Response(JSON.stringify({ data: [{ b64_json: pngBase64 }] }), { status: 200 }) |
| 137 | ) |
| 138 | vi.stubGlobal('fetch', fetchMock) |
| 139 | |
| 140 | await seedreamAdapter.generate( |
| 141 | createConfig({ |
| 142 | endpoint: 'https://example.test/images', |
| 143 | headers: { 'x-team': 'slides' }, |
| 144 | requestBody: { watermark: true, size: '2048x2048' } |
| 145 | }), |
| 146 | { |
| 147 | prompt: 'hero image', |
| 148 | size: '1:1', |
| 149 | count: 2 |
| 150 | } |
| 151 | ) |
| 152 | |
| 153 | const [endpoint, init] = fetchMock.mock.calls[0] as [string, RequestInit] |
| 154 | expect(endpoint).toBe('https://example.test/images') |
| 155 | expect(init.headers).toMatchObject({ 'x-team': 'slides' }) |
| 156 | expect(JSON.parse(String(init.body))).toMatchObject({ |
| 157 | size: '2048x2048', |
| 158 | n: 2, |
| 159 | watermark: true |
| 160 | }) |
| 161 | }) |
| 162 | |
| 163 | it('treats baseUrl with a path as the full endpoint', async () => { |
| 164 | const fetchMock = vi.fn().mockResolvedValue( |
| 165 | new Response(JSON.stringify({ data: [{ b64_json: pngBase64 }] }), { status: 200 }) |
| 166 | ) |
| 167 | vi.stubGlobal('fetch', fetchMock) |
| 168 | |
| 169 | await seedreamAdapter.generate( |
| 170 | createConfig({ |
| 171 | baseUrl: 'https://ark.cn-beijing.volces.com/api/v3/images/generations', |
| 172 | model: 'doubao-seedream-4-5-251128' |
| 173 | }), |
| 174 | { |
| 175 | prompt: 'hero image', |
| 176 | size: '1:1', |
| 177 | count: 1 |
| 178 | } |
| 179 | ) |
| 180 | |
| 181 | const [endpoint, init] = fetchMock.mock.calls[0] as [string, RequestInit] |
| 182 | expect(endpoint).toBe('https://ark.cn-beijing.volces.com/api/v3/images/generations') |
| 183 | expect(JSON.parse(String(init.body))).toMatchObject({ |
| 184 | model: 'doubao-seedream-4-5-251128' |
| 185 | }) |
| 186 | }) |
| 187 | }) |
| 188 |