1package provider
2
3import (
4 "context"
5 "math"
6 "net/http"
7 "net/http/httptest"
8 "strings"
9 "testing"
10)
11
12func TestSSEParse(t *testing.T) {
13 r := strings.NewReader("event: foo\ndata: {\"a\":1}\n\ndata: hello\ndata: world\n\n")
14 ch := make(chan sseEvent, 4)
15 go readSSE(r, ch)
16
17 e := <-ch
18 if e.Event != "foo" || e.Data != `{"a":1}` {
19 t.Fatalf("event 1: %+v", e)
20 }
21 e = <-ch
22 if e.Event != "" || e.Data != "hello\nworld" {
23 t.Fatalf("event 2: %+v", e)
24 }
25 if _, ok := <-ch; ok {
26 t.Fatalf("channel not closed")
27 }
28}
29
30func TestModelCatalog(t *testing.T) {
31 if len(Catalog) == 0 {
32 t.Fatal("empty catalog")
33 }
34 if _, err := FindModel("anthropic", "claude-sonnet-4-5"); err != nil {
35 t.Fatal(err)
36 }
37 if _, err := FindModel("openai", "gpt-5"); err != nil {
38 t.Fatal(err)
39 }
40 if _, err := FindModel("", "nope"); err == nil {
41 t.Fatal("expected error")
42 }
43}
44
45func TestVertexGeminiFlashCatalogLimits(t *testing.T) {
46 for _, id := range []string{"gemini-3.1-flash-lite", "gemini-3.5-flash"} {
47 m, err := FindModel("google-vertex", id)
48 if err != nil {
49 t.Fatal(err)
50 }
51 if m.ContextWindow != 1048576 || m.MaxOutput != 65535 || !m.Reasoning {
52 t.Errorf("%s metadata = %+v", id, m)
53 }
54 }
55}
56
57func TestComputeCost(t *testing.T) {
58 m, _ := FindModel("anthropic", "claude-sonnet-4-5")
59 cost := ComputeCost(m, Usage{InputTokens: 1_000_000, OutputTokens: 1_000_000})
60 want := m.PriceInput + m.PriceOutput
61 if cost != want {
62 t.Fatalf("cost=%v want=%v", cost, want)
63 }
64}
65
66func TestComputeCostInputTier(t *testing.T) {
67 m := Model{
68 PriceInput: 1, PriceOutput: 2, PriceCacheRead: 0.1,
69 PriceTierInputTokens: 100,
70 PriceInputAbove: 3, PriceOutputAbove: 4, PriceCacheReadAbove: 0.2,
71 }
72 below := ComputeCost(m, Usage{InputTokens: 50, OutputTokens: 10, CacheReadTokens: 50})
73 wantBelow := (50.0*1 + 10*2 + 50*0.1) / 1_000_000
74 if math.Abs(below-wantBelow) > 1e-12 {
75 t.Fatalf("below-tier cost=%v want=%v", below, wantBelow)
76 }
77
78 above := ComputeCost(m, Usage{InputTokens: 51, OutputTokens: 10, CacheReadTokens: 50})
79 wantAbove := (51.0*3 + 10*4 + 50*0.2) / 1_000_000
80 if math.Abs(above-wantAbove) > 1e-12 {
81 t.Fatalf("above-tier cost=%v want=%v", above, wantAbove)
82 }
83}
84
85func TestAnthropicErrorStatus(t *testing.T) {
86 srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
87 w.WriteHeader(http.StatusUnauthorized)
88 _, _ = w.Write([]byte(`{"error":{"type":"auth","message":"bad key"}}`))
89 }))
90 defer srv.Close()
91
92 c := NewAnthropic("x", srv.URL)
93 _, err := c.Stream(context.Background(), Request{Model: "claude-sonnet-4-5"})
94 if err == nil || !strings.Contains(err.Error(), "401") {
95 t.Fatalf("want 401 err, got %v", err)
96 }
97}
98
99func TestOpenAIErrorStatus(t *testing.T) {
100 srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
101 w.WriteHeader(http.StatusBadRequest)
102 _, _ = w.Write([]byte(`{"error":{"message":"nope"}}`))
103 }))
104 defer srv.Close()
105
106 c := NewOpenAI("x", srv.URL)
107 _, err := c.Stream(context.Background(), Request{Model: "gpt-5"})
108 if err == nil || !strings.Contains(err.Error(), "400") {
109 t.Fatalf("want 400 err, got %v", err)
110 }
111}
112
113func TestMiniMaxM3CatalogAndRequest(t *testing.T) {
114 for _, provider := range []string{"minimax", "minimax-cn"} {
115 m, err := FindModel(provider, "MiniMax-M3")
116 if err != nil {
117 t.Fatal(err)
118 }
119 if m.ContextWindow != 1000000 || m.MaxOutput != 131072 || !m.Reasoning || !m.AdaptiveThinkingCompat {
120 t.Errorf("%s metadata = %+v", provider, m)
121 }
122 if m.PriceInput != 0.3 || m.PriceOutput != 1.2 || m.PriceCacheRead != 0.06 || m.PriceTierInputTokens != 512000 || m.PriceInputAbove != 0.6 || m.PriceOutputAbove != 2.4 || m.PriceCacheReadAbove != 0.12 {
123 t.Errorf("%s pricing = %+v", provider, m)
124 }
125 }
126
127 c := NewAnthropicCompat("minimax", "x", "https://api.minimax.io/anthropic").(*anthropicClient)
128 temp := float32(0.7)
129 wire, err := c.buildRequest(Request{
130 Model: "MiniMax-M3",
131 Reasoning: "high",
132 Temperature: &temp,
133 Messages: []Message{{Role: RoleUser, Content: []Content{TextBlock{Text: "hi"}}}},
134 })
135 if err != nil {
136 t.Fatal(err)
137 }
138 if wire.Thinking == nil || wire.Thinking.Type != "adaptive" || wire.Thinking.BudgetTokens != 0 {
139 t.Fatalf("want adaptive thinking without a budget, got %+v", wire.Thinking)
140 }
141 if wire.OutputConfig != nil {
142 t.Fatalf("MiniMax-M3 must not send output_config, got %+v", wire.OutputConfig)
143 }
144 if wire.Temperature == nil || *wire.Temperature != temp {
145 t.Fatalf("MiniMax-M3 should keep temperature, got %v", wire.Temperature)
146 }
147}
148
149func TestAnthropicAdaptiveThinking(t *testing.T) {
150 c := NewAnthropic("x", "").(*anthropicClient)
151 temp := float32(0.7)
152
153 // Opus 5 -> adaptive thinking, effort set, no budget, no temperature.
154 wire, err := c.buildRequest(Request{
155 Model: "claude-opus-5",
156 Reasoning: "high",
157 Temperature: &temp,
158 Messages: []Message{{Role: RoleUser, Content: []Content{TextBlock{Text: "hi"}}}},
159 })
160 if err != nil {
161 t.Fatal(err)
162 }
163 if wire.Thinking == nil || wire.Thinking.Type != "adaptive" {
164 t.Fatalf("want adaptive thinking, got %+v", wire.Thinking)
165 }
166 if wire.Thinking.BudgetTokens != 0 {
167 t.Fatalf("adaptive must not send budget_tokens, got %d", wire.Thinking.BudgetTokens)
168 }
169 if wire.OutputConfig == nil || wire.OutputConfig.Effort != "high" {
170 t.Fatalf("want effort=high, got %+v", wire.OutputConfig)
171 }
172 if wire.Temperature != nil {
173 t.Fatalf("adaptive must drop temperature, got %v", *wire.Temperature)
174 }
175
176 // maximum -> xhigh effort.
177 wire, err = c.buildRequest(Request{
178 Model: "claude-opus-5",
179 Reasoning: "maximum",
180 Messages: []Message{{Role: RoleUser, Content: []Content{TextBlock{Text: "hi"}}}},
181 })
182 if err != nil {
183 t.Fatal(err)
184 }
185 if wire.OutputConfig == nil || wire.OutputConfig.Effort != "xhigh" {
186 t.Fatalf("want effort=xhigh, got %+v", wire.OutputConfig)
187 }
188
189 // max is a separate native tier above xhigh on adaptive models.
190 wire, err = c.buildRequest(Request{
191 Model: "claude-opus-5",
192 Reasoning: "max",
193 Messages: []Message{{Role: RoleUser, Content: []Content{TextBlock{Text: "hi"}}}},
194 })
195 if err != nil {
196 t.Fatal(err)
197 }
198 if wire.OutputConfig == nil || wire.OutputConfig.Effort != "max" {
199 t.Fatalf("want effort=max, got %+v", wire.OutputConfig)
200 }
201
202 // Sonnet 5 -> adaptive thinking, effort set, no budget, no temperature.
203 wire, err = c.buildRequest(Request{
204 Model: "claude-sonnet-5",
205 Reasoning: "high",
206 Temperature: &temp,
207 Messages: []Message{{Role: RoleUser, Content: []Content{TextBlock{Text: "hi"}}}},
208 })
209 if err != nil {
210 t.Fatal(err)
211 }
212 if wire.Thinking == nil || wire.Thinking.Type != "adaptive" {
213 t.Fatalf("want adaptive thinking for Sonnet 5, got %+v", wire.Thinking)
214 }
215 if wire.Thinking.BudgetTokens != 0 {
216 t.Fatalf("Sonnet 5 adaptive must not send budget_tokens, got %d", wire.Thinking.BudgetTokens)
217 }
218 if wire.OutputConfig == nil || wire.OutputConfig.Effort != "high" {
219 t.Fatalf("want Sonnet 5 effort=high, got %+v", wire.OutputConfig)
220 }
221 if wire.Temperature != nil {
222 t.Fatalf("Sonnet 5 adaptive must drop temperature, got %v", *wire.Temperature)
223 }
224
225 // Opus 4.5 -> budget-based thinking, no output_config, temperature kept.
226 wire, err = c.buildRequest(Request{
227 Model: "claude-opus-4-5",
228 Reasoning: "high",
229 Temperature: &temp,
230 Messages: []Message{{Role: RoleUser, Content: []Content{TextBlock{Text: "hi"}}}},
231 })
232 if err != nil {
233 t.Fatal(err)
234 }
235 if wire.Thinking == nil || wire.Thinking.Type != "enabled" || wire.Thinking.BudgetTokens <= 0 {
236 t.Fatalf("want budget thinking, got %+v", wire.Thinking)
237 }
238 if wire.OutputConfig != nil {
239 t.Fatalf("budget models must not send output_config, got %+v", wire.OutputConfig)
240 }
241 if wire.Temperature == nil || *wire.Temperature != temp {
242 t.Fatalf("budget model should keep temperature, got %v", wire.Temperature)
243 }
244}
245
246func TestAnthropicBuildRequestStripsAssistantImages(t *testing.T) {
247 c := NewAnthropic("x", "").(*anthropicClient)
248 wire, err := c.buildRequest(Request{
249 Model: "claude-sonnet-4-5",
250 Messages: []Message{
251 {Role: RoleUser, Content: []Content{TextBlock{Text: "make an image"}}},
252 {Role: RoleAssistant, Content: []Content{
253 TextBlock{Text: "done"},
254 ImageBlock{MimeType: "image/png", Data: []byte("png")},
255 TextBlock{Text: "Saved image: `zut-gemini-image-x.png`"},
256 }},
257 {Role: RoleUser, Content: []Content{TextBlock{Text: "hello"}}},
258 },
259 })
260 if err != nil {
261 t.Fatal(err)
262 }
263 if len(wire.Messages) != 3 {
264 t.Fatalf("messages=%d", len(wire.Messages))
265 }
266 assistant := wire.Messages[1]
267 if assistant.Role != "assistant" {
268 t.Fatalf("role=%q", assistant.Role)
269 }
270 if len(assistant.Content) != 2 {
271 t.Fatalf("assistant content=%+v", assistant.Content)
272 }
273 for _, b := range assistant.Content {
274 if _, ok := b.(anthImageBlock); ok {
275 t.Fatalf("assistant image block was not stripped: %+v", assistant.Content)
276 }
277 }
278}
279
280func TestAnthropicStreamHappyPath(t *testing.T) {
281 srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
282 w.Header().Set("content-type", "text/event-stream")
283 w.WriteHeader(http.StatusOK)
284 fl, _ := w.(http.Flusher)
285 write := func(s string) {
286 _, _ = w.Write([]byte(s))
287 if fl != nil {
288 fl.Flush()
289 }
290 }
291 write("event: message_start\ndata: {\"message\":{\"usage\":{\"input_tokens\":10,\"output_tokens\":0}}}\n\n")
292 write("event: content_block_start\ndata: {\"index\":0,\"content_block\":{\"type\":\"text\",\"text\":\"\"}}\n\n")
293 write("event: content_block_delta\ndata: {\"index\":0,\"delta\":{\"type\":\"text_delta\",\"text\":\"hi\"}}\n\n")
294 write("event: content_block_stop\ndata: {\"index\":0}\n\n")
295 write("event: message_delta\ndata: {\"delta\":{\"stop_reason\":\"end_turn\"},\"usage\":{\"output_tokens\":5}}\n\n")
296 write("event: message_stop\ndata: {}\n\n")
297 }))
298 defer srv.Close()
299
300 c := NewAnthropic("x", srv.URL)
301 evs, err := c.Stream(context.Background(), Request{Model: "claude-sonnet-4-5"})
302 if err != nil {
303 t.Fatal(err)
304 }
305 var gotText string
306 var done EventDone
307 for ev := range evs {
308 switch e := ev.(type) {
309 case EventTextDelta:
310 gotText += e.Delta
311 case EventDone:
312 done = e
313 }
314 }
315 if gotText != "hi" {
316 t.Fatalf("text=%q", gotText)
317 }
318 if done.Stop != StopEnd {
319 t.Fatalf("stop=%v", done.Stop)
320 }
321}
322
323func TestClaudeOpus5Catalog(t *testing.T) {
324 m, err := FindModel("anthropic", "claude-opus-5")
325 if err != nil {
326 t.Fatal(err)
327 }
328 if m.DisplayName != "Claude Opus 5" || m.ContextWindow != 1000000 || m.MaxOutput != 128000 || !m.Reasoning || !m.AdaptiveThinking || m.Speculative {
329 t.Fatalf("unexpected Opus 5 model: %+v", m)
330 }
331 if m.PriceInput != 5 || m.PriceOutput != 25 || m.PriceCacheRead != 0.5 || m.PriceCacheWrite != 6.25 {
332 t.Fatalf("unexpected Opus 5 pricing: %+v", m)
333 }
334}
335
336func TestClaudeSonnet5Catalog(t *testing.T) {
337 m, err := FindModel("anthropic", "claude-sonnet-5")
338 if err != nil {
339 t.Fatal(err)
340 }
341 if m.DisplayName != "Claude Sonnet 5" || m.ContextWindow != 1000000 || m.MaxOutput != 128000 || !m.Reasoning || !m.AdaptiveThinking {
342 t.Fatalf("unexpected Sonnet 5 model: %+v", m)
343 }
344 if m.PriceInput != 2 || m.PriceOutput != 10 || m.PriceCacheRead != 0.2 || m.PriceCacheWrite != 2.5 {
345 t.Fatalf("unexpected Sonnet 5 pricing: %+v", m)
346 }
347}
348
349func TestOpenAICompatAnthropicReasoningEffort(t *testing.T) {
350 c := NewOpenRouter("token", "").(*openaiClient)
351 wire, err := c.buildRequest(Request{
352 Model: "anthropic/claude-opus-4.8",
353 Reasoning: "maximum",
354 Messages: []Message{{Role: RoleUser, Content: []Content{TextBlock{Text: "hi"}}}},
355 })
356 if err != nil {
357 t.Fatal(err)
358 }
359 if wire.ReasoningEffort != "xhigh" {
360 t.Fatalf("want xhigh for adaptive Anthropic model over OpenAI-compatible wire, got %q", wire.ReasoningEffort)
361 }
362
363 wire, err = c.buildRequest(Request{
364 Model: "anthropic/claude-sonnet-5",
365 Reasoning: "maximum",
366 Messages: []Message{{Role: RoleUser, Content: []Content{TextBlock{Text: "hi"}}}},
367 })
368 if err != nil {
369 t.Fatal(err)
370 }
371 if wire.ReasoningEffort != "xhigh" {
372 t.Fatalf("want xhigh for Claude Sonnet 5 over OpenAI-compatible wire, got %q", wire.ReasoningEffort)
373 }
374
375 wire, err = c.buildRequest(Request{
376 Model: "gpt-5.1",
377 Reasoning: "maximum",
378 Messages: []Message{{Role: RoleUser, Content: []Content{TextBlock{Text: "hi"}}}},
379 })
380 if err != nil {
381 t.Fatal(err)
382 }
383 if wire.ReasoningEffort != "high" {
384 t.Fatalf("want generic OpenAI-compatible maximum clamped to high, got %q", wire.ReasoningEffort)
385 }
386}
387
388func TestOpenAIBuildRequestSkipsReasoningOnlyAssistantMessages(t *testing.T) {
389 c := NewKimi("token", "").(*openaiClient)
390 wire, err := c.buildRequest(Request{
391 Model: "kimi-for-coding",
392 Messages: []Message{
393 {Role: RoleUser, Content: []Content{TextBlock{Text: "first"}}},
394 {Role: RoleAssistant, Content: []Content{ReasoningBlock{Summary: "thinking only"}}},
395 {Role: RoleUser, Content: []Content{TextBlock{Text: "second"}}},
396 },
397 })
398 if err != nil {
399 t.Fatal(err)
400 }
401 for i, msg := range wire.Messages {
402 if msg.Role == "assistant" && msg.Content == nil && len(msg.ToolCalls) == 0 {
403 t.Fatalf("message %d is empty assistant: %+v", i, msg)
404 }
405 }
406 if got := len(wire.Messages); got != 2 {
407 t.Fatalf("messages=%d want 2 after skipping reasoning-only assistant", got)
408 }
409}
410
411func TestOpenAIStreamHappyPath(t *testing.T) {
412 srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
413 w.Header().Set("content-type", "text/event-stream")
414 w.WriteHeader(http.StatusOK)
415 fl, _ := w.(http.Flusher)
416 write := func(s string) {
417 _, _ = w.Write([]byte(s))
418 if fl != nil {
419 fl.Flush()
420 }
421 }
422 write("data: {\"choices\":[{\"index\":0,\"delta\":{\"content\":\"hel\"},\"finish_reason\":null}]}\n\n")
423 write("data: {\"choices\":[{\"index\":0,\"delta\":{\"content\":\"lo\"},\"finish_reason\":\"stop\"}]}\n\n")
424 write("data: {\"choices\":[],\"usage\":{\"prompt_tokens\":8,\"completion_tokens\":2}}\n\n")
425 write("data: [DONE]\n\n")
426 }))
427 defer srv.Close()
428
429 c := NewOpenAI("x", srv.URL)
430 evs, err := c.Stream(context.Background(), Request{Model: "gpt-5"})
431 if err != nil {
432 t.Fatal(err)
433 }
434 var gotText string
435 var done EventDone
436 for ev := range evs {
437 switch e := ev.(type) {
438 case EventTextDelta:
439 gotText += e.Delta
440 case EventDone:
441 done = e
442 }
443 }
444 if gotText != "hello" {
445 t.Fatalf("text=%q", gotText)
446 }
447 if done.Stop != StopEnd {
448 t.Fatalf("stop=%v", done.Stop)
449 }
450}
451
452func TestDiscoverOpenRouter(t *testing.T) {
453 const body = `{"data":[
454 {"id":"x/full","pricing":{"prompt":"0.000003","completion":"0.000015"},
455 "context_length":200000,"top_provider":{"max_completion_tokens":64000},
456 "supported_parameters":["reasoning"]},
457 {"id":"x/fallback","top_provider":{"context_length":128000}},
458 {"id":""}]}`
459 srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
460 _, _ = w.Write([]byte(body))
461 }))
462 defer srv.Close()
463
464 models, err := DiscoverOpenRouter(context.Background(), srv.URL)
465 if err != nil {
466 t.Fatal(err)
467 }
468 if len(models) != 2 { // empty id dropped
469 t.Fatalf("want 2 models, got %d", len(models))
470 }
471 // per-token USD -> per-1M; reasoning from supported_parameters.
472 if m := models[0]; m.Provider != "openrouter" || m.ContextWindow != 200000 ||
473 m.MaxOutput != 64000 || !m.Reasoning || m.PriceInput != 3 || m.PriceOutput != 15 {
474 t.Errorf("model[0]: %+v", m)
475 }
476 // context falls back to top_provider; no reasoning.
477 if m := models[1]; m.ContextWindow != 128000 || m.MaxOutput != 0 || m.Reasoning {
478 t.Errorf("model[1]: %+v", m)
479 }
480}
481
482func TestGPT56CatalogEntries(t *testing.T) {
483 cases := []struct {
484 provider string
485 id string
486 context int
487 priceInput float64
488 priceOut float64
489 cacheRead float64
490 cacheWrite float64
491 }{
492 {"openai", "gpt-5.6-luna", 272000, 1, 6, 0.1, 1.25},
493 {"openai", "gpt-5.6-sol", 272000, 5, 30, 0.5, 6.25},
494 {"openai", "gpt-5.6-terra", 272000, 2.5, 15, 0.25, 3.125},
495 {"openai-codex", "gpt-5.6-luna", 272000, 1, 6, 0.1, 1.25},
496 {"openai-codex", "gpt-5.6-sol", 272000, 5, 30, 0.5, 6.25},
497 {"openai-codex", "gpt-5.6-terra", 272000, 2.5, 15, 0.25, 3.125},
498 {"azure-openai-responses", "gpt-5.6-luna", 1050000, 1, 6, 0.1, 1.25},
499 {"azure-openai-responses", "gpt-5.6-sol", 1050000, 5, 30, 0.5, 6.25},
500 {"azure-openai-responses", "gpt-5.6-terra", 1050000, 2.5, 15, 0.25, 3.125},
501 {"vercel-ai-gateway", "openai/gpt-5.6-luna", 1050000, 1, 6, 0.1, 1.25},
502 {"vercel-ai-gateway", "openai/gpt-5.6-sol", 1050000, 5, 30, 0.5, 6.25},
503 {"vercel-ai-gateway", "openai/gpt-5.6-terra", 1050000, 2.5, 15, 0.25, 3.125},
504 }
505 for _, tc := range cases {
506 m, err := FindModel(tc.provider, tc.id)
507 if err != nil {
508 t.Fatal(err)
509 }
510 if m.ContextWindow != tc.context || m.MaxOutput != 128000 || !m.Reasoning {
511 t.Fatalf("%s/%s limits: %+v", tc.provider, tc.id, m)
512 }
513 if m.PriceInput != tc.priceInput || m.PriceOutput != tc.priceOut || m.PriceCacheRead != tc.cacheRead || m.PriceCacheWrite != tc.cacheWrite {
514 t.Fatalf("%s/%s prices: %+v", tc.provider, tc.id, m)
515 }
516 }
517}
518
519// TestOpenCodeGoCatalog pins the Grok 4.5 and Kimi K3 entries added to
520// the OpenCode Go provider. Both are listed in the vendor's current Go
521// model lineup (https://opencode.ai/docs/go) and were missing from the
522// baked-in catalog.
523func TestOpenCodeGoCatalog(t *testing.T) {
524 cases := []struct {
525 id string
526 context int
527 maxOut int
528 priceIn float64
529 priceOut float64
530 cacheRead float64
531 }{
532 {"grok-4.5", 500000, 500000, 2, 6, 0.3},
533 {"kimi-k3", 1048576, 131072, 3, 15, 0.3},
534 }
535 for _, tc := range cases {
536 m, err := FindModel("opencode-go", tc.id)
537 if err != nil {
538 t.Fatal(err)
539 }
540 if m.ContextWindow != tc.context || m.MaxOutput != tc.maxOut || !m.Reasoning {
541 t.Fatalf("opencode-go/%s limits: %+v", tc.id, m)
542 }
543 if m.PriceInput != tc.priceIn || m.PriceOutput != tc.priceOut || m.PriceCacheRead != tc.cacheRead {
544 t.Fatalf("opencode-go/%s prices: %+v", tc.id, m)
545 }
546 if m.BaseURL != "https://opencode.ai/zen/go/v1" {
547 t.Fatalf("opencode-go/%s baseURL: %s", tc.id, m.BaseURL)
548 }
549 }
550}
551
552// TestOpenAIOmitsZeroMaxTokens guards against sending max_tokens: 0 for
553// discovered models that don't advertise an output cap (MaxOutput == 0).
554func TestOpenAIOmitsZeroMaxTokens(t *testing.T) {
555 SetLiveModels([]Model{
556 {Provider: "openrouter", ID: "vendor/no-cap", DisplayName: "No Cap"},
557 {Provider: "openrouter", ID: "vendor/reason-no-cap", DisplayName: "Reason No Cap", Reasoning: true},
558 {Provider: "openrouter", ID: "vendor/capped", DisplayName: "Capped", MaxOutput: 4096},
559 })
560 defer SetLiveModels(nil)
561
562 c := NewOpenAI("x", "").(*openaiClient)
563
564 got, err := c.buildRequest(Request{Model: "vendor/no-cap"})
565 if err != nil {
566 t.Fatal(err)
567 }
568 if got.MaxTokens != nil {
569 t.Errorf("expected max_tokens omitted, got %d", *got.MaxTokens)
570 }
571
572 got, err = c.buildRequest(Request{Model: "vendor/reason-no-cap"})
573 if err != nil {
574 t.Fatal(err)
575 }
576 if got.MaxCompletionTok != nil {
577 t.Errorf("expected max_completion_tokens omitted, got %d", *got.MaxCompletionTok)
578 }
579
580 got, err = c.buildRequest(Request{Model: "vendor/capped"})
581 if err != nil {
582 t.Fatal(err)
583 }
584 if got.MaxTokens == nil || *got.MaxTokens != 4096 {
585 t.Errorf("expected max_tokens 4096, got %v", got.MaxTokens)
586 }
587}