| 1 | package openai |
| 2 | |
| 3 | import ( |
| 4 | "bytes" |
| 5 | "encoding/json" |
| 6 | "strings" |
| 7 | "testing" |
| 8 | |
| 9 | "reasonix/internal/provider" |
| 10 | ) |
| 11 | |
| 12 | func TestBuildRequestEmbedsImagesForVisionModel(t *testing.T) { |
| 13 | c := &client{model: "gpt-4o", vision: true} |
| 14 | req := c.buildRequest(provider.Request{ |
| 15 | Messages: []provider.Message{ |
| 16 | {Role: provider.RoleUser, Content: "what is this", Images: []string{"data:image/png;base64,AAAA"}}, |
| 17 | }, |
| 18 | }) |
| 19 | parts, ok := req.Messages[0].Content.([]chatContentPart) |
| 20 | if !ok { |
| 21 | t.Fatalf("vision user content = %T, want []chatContentPart", req.Messages[0].Content) |
| 22 | } |
| 23 | if len(parts) != 2 || parts[0].Type != "text" || parts[1].Type != "image_url" { |
| 24 | t.Fatalf("parts = %+v, want [text, image_url]", parts) |
| 25 | } |
| 26 | if parts[1].ImageURL == nil || parts[1].ImageURL.URL != "data:image/png;base64,AAAA" { |
| 27 | t.Fatalf("image_url = %+v, want the data URL", parts[1].ImageURL) |
| 28 | } |
| 29 | body, _ := json.Marshal(req.Messages[0]) |
| 30 | if !strings.Contains(string(body), `"type":"image_url"`) { |
| 31 | t.Errorf("serialized content missing image_url part: %s", body) |
| 32 | } |
| 33 | } |
| 34 | |
| 35 | func TestModelInfoEnablesImageWireSerialization(t *testing.T) { |
| 36 | p, err := New(provider.Config{ |
| 37 | Name: "catalog", BaseURL: "https://example.test/v1", Model: "kimi-k3", |
| 38 | ModelInfo: &provider.ModelInfo{ID: "kimi-k3", InputModalities: []provider.ModelModality{provider.ModalityText, provider.ModalityImage}}, |
| 39 | }) |
| 40 | if err != nil { |
| 41 | t.Fatalf("New: %v", err) |
| 42 | } |
| 43 | c := p.(*client) |
| 44 | if !c.vision { |
| 45 | t.Fatal("model metadata should enable image wire serialization") |
| 46 | } |
| 47 | req := c.buildRequest(provider.Request{Messages: []provider.Message{{Role: provider.RoleUser, Content: "describe", Images: []string{"data:image/png;base64,AAAA"}}}}) |
| 48 | if _, ok := req.Messages[0].Content.([]chatContentPart); !ok { |
| 49 | t.Fatalf("content = %#v, want image content parts", req.Messages[0].Content) |
| 50 | } |
| 51 | } |
| 52 | |
| 53 | func TestBuildRequestEmbedsOfficialDeepSeekImageURLAndFileID(t *testing.T) { |
| 54 | c := &client{model: OfficialDeepSeekVisionModel, vision: true, deepseek: true} |
| 55 | req := c.buildRequest(provider.Request{ |
| 56 | Messages: []provider.Message{{ |
| 57 | Role: provider.RoleUser, |
| 58 | Content: "what is this", |
| 59 | Images: []string{ |
| 60 | "https://cdn.example.com/cat.png", |
| 61 | "file-api-0a1b2c3d4e5f6071", |
| 62 | }, |
| 63 | }}, |
| 64 | }) |
| 65 | parts, ok := req.Messages[0].Content.([]chatContentPart) |
| 66 | if !ok || len(parts) != 3 { |
| 67 | t.Fatalf("parts = %#v", req.Messages[0].Content) |
| 68 | } |
| 69 | if parts[1].Type != "image_url" || parts[1].ImageURL == nil || parts[1].ImageURL.URL != "https://cdn.example.com/cat.png" { |
| 70 | t.Fatalf("url part = %+v", parts[1]) |
| 71 | } |
| 72 | if parts[2].Type != "file" || parts[2].FileID != "file-api-0a1b2c3d4e5f6071" { |
| 73 | t.Fatalf("file part = %+v", parts[2]) |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | func TestBuildRequestSkipsImagesWithoutVision(t *testing.T) { |
| 78 | c := &client{model: "deepseek-v4"} // vision unset |
| 79 | req := c.buildRequest(provider.Request{ |
| 80 | Messages: []provider.Message{ |
| 81 | {Role: provider.RoleUser, Content: "ignore the image", Images: []string{"data:image/png;base64,AAAA"}}, |
| 82 | }, |
| 83 | }) |
| 84 | if s, ok := req.Messages[0].Content.(string); !ok || s != "ignore the image" { |
| 85 | t.Fatalf("non-vision content = %#v, want plain string", req.Messages[0].Content) |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | func TestOfficialDeepSeekProviderWideVisionInputMatchesTextOnlyRequest(t *testing.T) { |
| 90 | p, err := New(provider.Config{ |
| 91 | Name: "deepseek", |
| 92 | BaseURL: "https://api.deepseek.com", |
| 93 | Model: "deepseek-v4-pro", |
| 94 | Extra: map[string]any{"vision": true}, |
| 95 | }) |
| 96 | if err != nil { |
| 97 | t.Fatalf("New: %v", err) |
| 98 | } |
| 99 | c := p.(*client) |
| 100 | if c.vision { |
| 101 | t.Fatal("official DeepSeek endpoint must ignore stale vision=true config") |
| 102 | } |
| 103 | |
| 104 | textOnly := provider.Request{Messages: []provider.Message{{ |
| 105 | Role: provider.RoleUser, Content: "describe this image", |
| 106 | }}} |
| 107 | withImage := provider.Request{Messages: []provider.Message{{ |
| 108 | Role: provider.RoleUser, Content: "describe this image", |
| 109 | Images: []string{"data:image/png;base64," + strings.Repeat("QUFB", 20_000)}, |
| 110 | }}} |
| 111 | textBody, err := json.Marshal(c.buildRequest(textOnly)) |
| 112 | if err != nil { |
| 113 | t.Fatalf("marshal text request: %v", err) |
| 114 | } |
| 115 | imageBody, err := json.Marshal(c.buildRequest(withImage)) |
| 116 | if err != nil { |
| 117 | t.Fatalf("marshal image request: %v", err) |
| 118 | } |
| 119 | if !bytes.Equal(imageBody, textBody) { |
| 120 | t.Fatalf("official DeepSeek image request changed provider-visible bytes:\ntext: %s\nimage: %s", textBody, imageBody) |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | func TestOfficialDeepSeekUnknownModelExplicitVisionSerializesImages(t *testing.T) { |
| 125 | p, err := New(provider.Config{ |
| 126 | Name: "deepseek", |
| 127 | BaseURL: "https://api.deepseek.com", |
| 128 | Model: "deepseek-v5-vision", |
| 129 | Extra: map[string]any{ |
| 130 | "vision": true, |
| 131 | "vision_model_explicit": true, |
| 132 | }, |
| 133 | }) |
| 134 | if err != nil { |
| 135 | t.Fatalf("New: %v", err) |
| 136 | } |
| 137 | c := p.(*client) |
| 138 | if !c.vision { |
| 139 | t.Fatal("explicit vision must enable unknown DeepSeek models") |
| 140 | } |
| 141 | |
| 142 | textOnly := provider.Request{Messages: []provider.Message{{ |
| 143 | Role: provider.RoleUser, Content: "describe", |
| 144 | }}} |
| 145 | withImage := provider.Request{Messages: []provider.Message{{ |
| 146 | Role: provider.RoleUser, Content: "describe", |
| 147 | Images: []string{"data:image/png;base64,AAAA"}, |
| 148 | }}} |
| 149 | textBody, err := json.Marshal(c.buildRequest(textOnly)) |
| 150 | if err != nil { |
| 151 | t.Fatalf("marshal text request: %v", err) |
| 152 | } |
| 153 | imageBody, err := json.Marshal(c.buildRequest(withImage)) |
| 154 | if err != nil { |
| 155 | t.Fatalf("marshal image request: %v", err) |
| 156 | } |
| 157 | if bytes.Equal(imageBody, textBody) || !bytes.Contains(imageBody, []byte("data:image/png;base64,AAAA")) { |
| 158 | t.Fatalf("explicit unknown DeepSeek image missing from request: %s", imageBody) |
| 159 | } |
| 160 | } |
| 161 | |
| 162 | func TestOfficialDeepSeekDoesNotInjectToolResultImages(t *testing.T) { |
| 163 | p, err := New(provider.Config{ |
| 164 | Name: "deepseek", |
| 165 | BaseURL: "https://api.deepseek.com/v1", |
| 166 | Model: "deepseek-v4-pro", |
| 167 | Extra: map[string]any{ |
| 168 | "vision": true, |
| 169 | "vision_model_explicit": true, |
| 170 | }, |
| 171 | }) |
| 172 | if err != nil { |
| 173 | t.Fatalf("New: %v", err) |
| 174 | } |
| 175 | plainMessages := []provider.Message{ |
| 176 | {Role: provider.RoleUser, Content: "take a screenshot"}, |
| 177 | {Role: provider.RoleAssistant, ToolCalls: []provider.ToolCall{{ |
| 178 | ID: "c1", Name: "shot", Arguments: "{}", |
| 179 | }}}, |
| 180 | { |
| 181 | Role: provider.RoleTool, ToolCallID: "c1", Name: "shot", |
| 182 | Content: "[image: image/png]", |
| 183 | }, |
| 184 | } |
| 185 | imageMessages := append([]provider.Message(nil), plainMessages...) |
| 186 | imageMessages[2].Images = []string{"data:image/png;base64,AAAA"} |
| 187 | req := p.(*client).buildRequest(provider.Request{Messages: imageMessages}) |
| 188 | if len(req.Messages) != 3 { |
| 189 | t.Fatalf("messages = %d, want 3 without an injected image message", len(req.Messages)) |
| 190 | } |
| 191 | body, err := json.Marshal(req) |
| 192 | if err != nil { |
| 193 | t.Fatalf("marshal request: %v", err) |
| 194 | } |
| 195 | if strings.Contains(string(body), "image_url") || strings.Contains(string(body), "base64,AAAA") { |
| 196 | t.Fatalf("official DeepSeek request leaked tool image payload: %s", body) |
| 197 | } |
| 198 | plainBody, err := json.Marshal(p.(*client).buildRequest(provider.Request{Messages: plainMessages})) |
| 199 | if err != nil { |
| 200 | t.Fatalf("marshal plain request: %v", err) |
| 201 | } |
| 202 | if !bytes.Equal(body, plainBody) { |
| 203 | t.Fatalf("official DeepSeek tool image metadata changed provider-visible bytes:\nplain: %s\nimage: %s", plainBody, body) |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | func TestOfficialDeepSeekVisionSKUEmbedsUserImages(t *testing.T) { |
| 208 | p, err := New(provider.Config{ |
| 209 | Name: "deepseek", |
| 210 | BaseURL: "https://api.deepseek.com", |
| 211 | Model: OfficialDeepSeekVisionModel, |
| 212 | }) |
| 213 | if err != nil { |
| 214 | t.Fatalf("New: %v", err) |
| 215 | } |
| 216 | c := p.(*client) |
| 217 | if !c.vision { |
| 218 | t.Fatal("pinned official DeepSeek vision SKU must enable user image serialization") |
| 219 | } |
| 220 | req := c.buildRequest(provider.Request{Messages: []provider.Message{{ |
| 221 | Role: provider.RoleUser, Content: "describe", |
| 222 | Images: []string{"data:image/png;base64,AAAA"}, |
| 223 | }}}) |
| 224 | parts, ok := req.Messages[0].Content.([]chatContentPart) |
| 225 | if !ok || len(parts) != 2 || parts[0].Type != "text" || parts[1].Type != "image_url" { |
| 226 | t.Fatalf("vision SKU user content = %#v, want [text, image_url]", req.Messages[0].Content) |
| 227 | } |
| 228 | if parts[1].ImageURL == nil || parts[1].ImageURL.URL != "data:image/png;base64,AAAA" { |
| 229 | t.Fatalf("image_url = %+v", parts[1].ImageURL) |
| 230 | } |
| 231 | |
| 232 | textOnly := c.buildRequest(provider.Request{Messages: []provider.Message{{ |
| 233 | Role: provider.RoleUser, Content: "hello", |
| 234 | }}}) |
| 235 | if s, ok := textOnly.Messages[0].Content.(string); !ok || s != "hello" { |
| 236 | t.Fatalf("vision SKU text-only content = %#v, want a string", textOnly.Messages[0].Content) |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | // V4.1 Flash is natively multimodal, so the official endpoint must serialize |
| 241 | // images for it — and for the ids the vendor still aliases to it — without the |
| 242 | // caller first resolving capability metadata. |
| 243 | func TestOfficialDeepSeekMultimodalSKUsEmbedUserImages(t *testing.T) { |
| 244 | for _, model := range []string{"deepseek-flash", "deepseek-v4-flash", "deepseek-v4.1-flash-expires-on-0910"} { |
| 245 | p, err := New(provider.Config{Name: "deepseek", BaseURL: "https://api.deepseek.com", Model: model}) |
| 246 | if err != nil { |
| 247 | t.Fatalf("New(%s): %v", model, err) |
| 248 | } |
| 249 | c := p.(*client) |
| 250 | if !c.vision { |
| 251 | t.Fatalf("%s must serialize user images without resolved metadata", model) |
| 252 | } |
| 253 | req := c.buildRequest(provider.Request{Messages: []provider.Message{{ |
| 254 | Role: provider.RoleUser, Content: "describe", |
| 255 | Images: []string{"data:image/png;base64,AAAA"}, |
| 256 | }}}) |
| 257 | parts, ok := req.Messages[0].Content.([]chatContentPart) |
| 258 | if !ok || len(parts) != 2 || parts[0].Type != "text" || parts[1].Type != "image_url" { |
| 259 | t.Fatalf("%s user content = %#v, want [text, image_url]", model, req.Messages[0].Content) |
| 260 | } |
| 261 | if parts[1].ImageURL == nil || parts[1].ImageURL.URL != "data:image/png;base64,AAAA" { |
| 262 | t.Fatalf("%s image_url = %+v", model, parts[1].ImageURL) |
| 263 | } |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | func TestOfficialRequestURLImageHardLimit(t *testing.T) { |
| 268 | p, err := New(provider.Config{BaseURL: "https://relay.test", Model: "deepseek-v4-pro", Extra: map[string]any{"request_url": "https://api.deepseek.com/v1/chat/completions", "vision": true}, ModelInfo: &provider.ModelInfo{InputModalities: []provider.ModelModality{provider.ModalityText, provider.ModalityImage}}}) |
| 269 | if err != nil { |
| 270 | t.Fatal(err) |
| 271 | } |
| 272 | body, err := json.Marshal(p.(*client).buildRequest(provider.Request{Messages: []provider.Message{{Role: provider.RoleUser, Content: "describe", Images: []string{"data:image/png;base64,AAAA"}}}})) |
| 273 | if err != nil || strings.Contains(string(body), "AAAA") { |
| 274 | t.Fatalf("official request URL leaked image: %s %v", body, err) |
| 275 | } |
| 276 | } |
| 277 | |
| 278 | func TestOfficialVisionExplicitOffRespectsResolvedMetadata(t *testing.T) { |
| 279 | p, err := New(provider.Config{BaseURL: "https://api.deepseek.com", Model: OfficialDeepSeekVisionModel, Extra: map[string]any{"vision": true}, ModelInfo: &provider.ModelInfo{InputModalities: []provider.ModelModality{provider.ModalityText}}}) |
| 280 | if err != nil { |
| 281 | t.Fatal(err) |
| 282 | } |
| 283 | body, err := json.Marshal(p.(*client).buildRequest(provider.Request{Messages: []provider.Message{{Role: provider.RoleUser, Content: "describe", Images: []string{"data:image/png;base64,AAAA"}}}})) |
| 284 | if err != nil || strings.Contains(string(body), "AAAA") { |
| 285 | t.Fatalf("explicit off leaked image: %s %v", body, err) |
| 286 | } |
| 287 | if p.(provider.ModelInfoProvider).ModelInfo().SupportsInput(provider.ModalityImage) { |
| 288 | t.Fatal("metadata disagrees with serializer") |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | func TestOfficialDeepSeekVisionSKUEmbedsToolImages(t *testing.T) { |
| 293 | p, err := New(provider.Config{ |
| 294 | Name: "deepseek", |
| 295 | BaseURL: "https://api.deepseek.com", |
| 296 | Model: OfficialDeepSeekVisionModel, |
| 297 | Extra: map[string]any{"vision": true}, |
| 298 | }) |
| 299 | if err != nil { |
| 300 | t.Fatalf("New: %v", err) |
| 301 | } |
| 302 | plain := []provider.Message{ |
| 303 | {Role: provider.RoleUser, Content: "take a screenshot"}, |
| 304 | {Role: provider.RoleAssistant, ToolCalls: []provider.ToolCall{{ |
| 305 | ID: "c1", Name: "shot", Arguments: "{}", |
| 306 | }}}, |
| 307 | {Role: provider.RoleTool, ToolCallID: "c1", Name: "shot", Content: "[image: image/png]"}, |
| 308 | } |
| 309 | withToolImage := append([]provider.Message(nil), plain...) |
| 310 | withToolImage[2].Images = []string{"data:image/png;base64,AAAA"} |
| 311 | c := p.(*client) |
| 312 | body, err := json.Marshal(c.buildRequest(provider.Request{Messages: withToolImage})) |
| 313 | if err != nil { |
| 314 | t.Fatalf("marshal: %v", err) |
| 315 | } |
| 316 | if !strings.Contains(string(body), "base64,AAAA") { |
| 317 | t.Fatalf("official DeepSeek vision SKU omitted tool image payload: %s", body) |
| 318 | } |
| 319 | plainBody, err := json.Marshal(c.buildRequest(provider.Request{Messages: plain})) |
| 320 | if err != nil { |
| 321 | t.Fatalf("marshal plain: %v", err) |
| 322 | } |
| 323 | if bytes.Equal(body, plainBody) { |
| 324 | t.Fatalf("tool images changed official DeepSeek vision SKU bytes:\nplain: %s\nimage: %s", plainBody, body) |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | func TestCustomDeepSeekProtocolGatewayPreservesExplicitVision(t *testing.T) { |
| 329 | p, err := New(provider.Config{ |
| 330 | Name: "deepseek-gateway", |
| 331 | BaseURL: "https://gateway.example/v1", |
| 332 | Model: "deepseek-v4-pro", |
| 333 | Extra: map[string]any{ |
| 334 | "reasoning_protocol": "deepseek", |
| 335 | "vision": true, |
| 336 | }, |
| 337 | }) |
| 338 | if err != nil { |
| 339 | t.Fatalf("New: %v", err) |
| 340 | } |
| 341 | c := p.(*client) |
| 342 | if !c.deepseek || !c.vision { |
| 343 | t.Fatalf("deepseek=%v vision=%v, want both enabled", c.deepseek, c.vision) |
| 344 | } |
| 345 | req := c.buildRequest(provider.Request{Messages: []provider.Message{{ |
| 346 | Role: provider.RoleUser, Content: "describe", |
| 347 | Images: []string{"data:image/png;base64,AAAA"}, |
| 348 | }}}) |
| 349 | parts, ok := req.Messages[0].Content.([]chatContentPart) |
| 350 | if !ok || len(parts) != 2 || parts[1].ImageURL == nil { |
| 351 | t.Fatalf("custom gateway content = %#v, want [text, image_url]", req.Messages[0].Content) |
| 352 | } |
| 353 | } |
| 354 | |
| 355 | func TestImageURLDetailFromConfig(t *testing.T) { |
| 356 | c := &client{model: "gpt-4o", vision: true, visionDetail: "low"} |
| 357 | req := c.buildRequest(provider.Request{ |
| 358 | Messages: []provider.Message{ |
| 359 | {Role: provider.RoleUser, Content: "x", Images: []string{"data:image/png;base64,AAAA"}}, |
| 360 | }, |
| 361 | }) |
| 362 | parts := req.Messages[0].Content.([]chatContentPart) |
| 363 | if parts[1].ImageURL.Detail != "low" { |
| 364 | t.Fatalf("detail = %q, want low", parts[1].ImageURL.Detail) |
| 365 | } |
| 366 | } |
| 367 | |
| 368 | func TestImageURLDetailOmittedByDefault(t *testing.T) { |
| 369 | c := &client{model: "gpt-4o", vision: true} |
| 370 | req := c.buildRequest(provider.Request{ |
| 371 | Messages: []provider.Message{ |
| 372 | {Role: provider.RoleUser, Content: "x", Images: []string{"data:image/png;base64,AAAA"}}, |
| 373 | }, |
| 374 | }) |
| 375 | body, _ := json.Marshal(req.Messages[0].Content.([]chatContentPart)[1]) |
| 376 | if strings.Contains(string(body), "detail") { |
| 377 | t.Errorf("detail must be omitted when unset: %s", body) |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | // Tool-result images can't ride in the tool message itself (the OpenAI API |
| 382 | // accepts only text parts under role "tool"), so buildRequest injects them as |
| 383 | // a user message after the turn's full run of tool results. |
| 384 | func TestBuildRequestInjectsToolImagesAsUserMessage(t *testing.T) { |
| 385 | c := &client{model: "gpt-4o", vision: true} |
| 386 | req := c.buildRequest(provider.Request{ |
| 387 | Messages: []provider.Message{ |
| 388 | {Role: provider.RoleUser, Content: "screenshot please"}, |
| 389 | {Role: provider.RoleAssistant, ToolCalls: []provider.ToolCall{ |
| 390 | {ID: "c1", Name: "shot", Arguments: "{}"}, |
| 391 | {ID: "c2", Name: "shot", Arguments: "{}"}, |
| 392 | }}, |
| 393 | {Role: provider.RoleTool, ToolCallID: "c1", Name: "shot", Content: "[image: image/png]", Images: []string{"data:image/png;base64,AAAA"}}, |
| 394 | {Role: provider.RoleTool, ToolCallID: "c2", Name: "shot", Content: "no image"}, |
| 395 | {Role: provider.RoleUser, Content: "and?"}, |
| 396 | }, |
| 397 | }) |
| 398 | if len(req.Messages) != 6 { |
| 399 | t.Fatalf("got %d messages, want 6 (images injected after the tool run)", len(req.Messages)) |
| 400 | } |
| 401 | for i, m := range req.Messages[2:4] { |
| 402 | if _, ok := m.Content.(string); !ok || m.Role != "tool" { |
| 403 | t.Fatalf("message %d = %+v, want tool message with plain string content", i+2, m) |
| 404 | } |
| 405 | } |
| 406 | inj := req.Messages[4] |
| 407 | if inj.Role != "user" { |
| 408 | t.Fatalf("injected message role = %q, want user between tool run and next turn", inj.Role) |
| 409 | } |
| 410 | parts, ok := inj.Content.([]chatContentPart) |
| 411 | if !ok || len(parts) != 2 || parts[0].Type != "text" || parts[1].Type != "image_url" { |
| 412 | t.Fatalf("injected content = %#v, want [text, image_url]", inj.Content) |
| 413 | } |
| 414 | if parts[1].ImageURL == nil || parts[1].ImageURL.URL != "data:image/png;base64,AAAA" { |
| 415 | t.Fatalf("image_url = %+v, want the tool image data URL", parts[1].ImageURL) |
| 416 | } |
| 417 | if req.Messages[5].Content != "and?" { |
| 418 | t.Fatalf("trailing user message displaced: %+v", req.Messages[5]) |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | func TestBuildRequestFlushesTrailingToolImages(t *testing.T) { |
| 423 | c := &client{model: "gpt-4o", vision: true} |
| 424 | req := c.buildRequest(provider.Request{ |
| 425 | Messages: []provider.Message{ |
| 426 | {Role: provider.RoleUser, Content: "go"}, |
| 427 | {Role: provider.RoleAssistant, ToolCalls: []provider.ToolCall{{ID: "c1", Name: "shot", Arguments: "{}"}}}, |
| 428 | {Role: provider.RoleTool, ToolCallID: "c1", Name: "shot", Content: "[image: image/png]", Images: []string{"data:image/png;base64,AAAA"}}, |
| 429 | }, |
| 430 | }) |
| 431 | last := req.Messages[len(req.Messages)-1] |
| 432 | if last.Role != "user" { |
| 433 | t.Fatalf("last message = %+v, want the injected image user message", last) |
| 434 | } |
| 435 | if _, ok := last.Content.([]chatContentPart); !ok { |
| 436 | t.Fatalf("last content = %#v, want content parts", last.Content) |
| 437 | } |
| 438 | } |
| 439 | |
| 440 | func TestBuildRequestSkipsToolImagesWithoutVision(t *testing.T) { |
| 441 | c := &client{model: "deepseek-v4"} // vision unset |
| 442 | req := c.buildRequest(provider.Request{ |
| 443 | Messages: []provider.Message{ |
| 444 | {Role: provider.RoleUser, Content: "go"}, |
| 445 | {Role: provider.RoleAssistant, ToolCalls: []provider.ToolCall{{ID: "c1", Name: "shot", Arguments: "{}"}}}, |
| 446 | {Role: provider.RoleTool, ToolCallID: "c1", Name: "shot", Content: "[image: image/png]", Images: []string{"data:image/png;base64,AAAA"}}, |
| 447 | }, |
| 448 | }) |
| 449 | if len(req.Messages) != 3 { |
| 450 | t.Fatalf("got %d messages, want 3 (no injection without vision)", len(req.Messages)) |
| 451 | } |
| 452 | if s, ok := req.Messages[2].Content.(string); !ok || s != "[image: image/png]" { |
| 453 | t.Fatalf("tool content = %#v, want the plain placeholder string", req.Messages[2].Content) |
| 454 | } |
| 455 | } |
| 456 |