1package provider
2
3import (
4 "context"
5 "net/http"
6 "net/http/httptest"
7 "strings"
8 "testing"
9)
10
11func TestSSEParse(t *testing.T) {
12 r := strings.NewReader("event: foo\ndata: {\"a\":1}\n\ndata: hello\ndata: world\n\n")
13 ch := make(chan sseEvent, 4)
14 go readSSE(r, ch)
15
16 e := <-ch
17 if e.Event != "foo" || e.Data != `{"a":1}` {
18 t.Fatalf("event 1: %+v", e)
19 }
20 e = <-ch
21 if e.Event != "" || e.Data != "hello\nworld" {
22 t.Fatalf("event 2: %+v", e)
23 }
24 if _, ok := <-ch; ok {
25 t.Fatalf("channel not closed")
26 }
27}
28
29func TestModelCatalog(t *testing.T) {
30 if len(Catalog) == 0 {
31 t.Fatal("empty catalog")
32 }
33 if _, err := FindModel("anthropic", "claude-sonnet-4-5"); err != nil {
34 t.Fatal(err)
35 }
36 if _, err := FindModel("openai", "gpt-5"); err != nil {
37 t.Fatal(err)
38 }
39 if _, err := FindModel("", "nope"); err == nil {
40 t.Fatal("expected error")
41 }
42}
43
44func TestComputeCost(t *testing.T) {
45 m, _ := FindModel("anthropic", "claude-sonnet-4-5")
46 cost := ComputeCost(m, Usage{InputTokens: 1_000_000, OutputTokens: 1_000_000})
47 want := m.PriceInput + m.PriceOutput
48 if cost != want {
49 t.Fatalf("cost=%v want=%v", cost, want)
50 }
51}
52
53func TestAnthropicErrorStatus(t *testing.T) {
54 srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
55 w.WriteHeader(http.StatusUnauthorized)
56 _, _ = w.Write([]byte(`{"error":{"type":"auth","message":"bad key"}}`))
57 }))
58 defer srv.Close()
59
60 c := NewAnthropic("x", srv.URL)
61 _, err := c.Stream(context.Background(), Request{Model: "claude-sonnet-4-5"})
62 if err == nil || !strings.Contains(err.Error(), "401") {
63 t.Fatalf("want 401 err, got %v", err)
64 }
65}
66
67func TestOpenAIErrorStatus(t *testing.T) {
68 srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
69 w.WriteHeader(http.StatusBadRequest)
70 _, _ = w.Write([]byte(`{"error":{"message":"nope"}}`))
71 }))
72 defer srv.Close()
73
74 c := NewOpenAI("x", srv.URL)
75 _, err := c.Stream(context.Background(), Request{Model: "gpt-5"})
76 if err == nil || !strings.Contains(err.Error(), "400") {
77 t.Fatalf("want 400 err, got %v", err)
78 }
79}
80
81func TestAnthropicAdaptiveThinking(t *testing.T) {
82 c := NewAnthropic("x", "").(*anthropicClient)
83 temp := float32(0.7)
84
85 // Opus 4.8 -> adaptive thinking, effort set, no budget, no temperature.
86 wire, err := c.buildRequest(Request{
87 Model: "claude-opus-4-8",
88 Reasoning: "high",
89 Temperature: &temp,
90 Messages: []Message{{Role: RoleUser, Content: []Content{TextBlock{Text: "hi"}}}},
91 })
92 if err != nil {
93 t.Fatal(err)
94 }
95 if wire.Thinking == nil || wire.Thinking.Type != "adaptive" {
96 t.Fatalf("want adaptive thinking, got %+v", wire.Thinking)
97 }
98 if wire.Thinking.BudgetTokens != 0 {
99 t.Fatalf("adaptive must not send budget_tokens, got %d", wire.Thinking.BudgetTokens)
100 }
101 if wire.OutputConfig == nil || wire.OutputConfig.Effort != "high" {
102 t.Fatalf("want effort=high, got %+v", wire.OutputConfig)
103 }
104 if wire.Temperature != nil {
105 t.Fatalf("adaptive must drop temperature, got %v", *wire.Temperature)
106 }
107
108 // maximum -> xhigh effort.
109 wire, err = c.buildRequest(Request{
110 Model: "claude-opus-4-8",
111 Reasoning: "maximum",
112 Messages: []Message{{Role: RoleUser, Content: []Content{TextBlock{Text: "hi"}}}},
113 })
114 if err != nil {
115 t.Fatal(err)
116 }
117 if wire.OutputConfig == nil || wire.OutputConfig.Effort != "xhigh" {
118 t.Fatalf("want effort=xhigh, got %+v", wire.OutputConfig)
119 }
120
121 // Opus 4.5 -> budget-based thinking, no output_config, temperature kept.
122 wire, err = c.buildRequest(Request{
123 Model: "claude-opus-4-5",
124 Reasoning: "high",
125 Temperature: &temp,
126 Messages: []Message{{Role: RoleUser, Content: []Content{TextBlock{Text: "hi"}}}},
127 })
128 if err != nil {
129 t.Fatal(err)
130 }
131 if wire.Thinking == nil || wire.Thinking.Type != "enabled" || wire.Thinking.BudgetTokens <= 0 {
132 t.Fatalf("want budget thinking, got %+v", wire.Thinking)
133 }
134 if wire.OutputConfig != nil {
135 t.Fatalf("budget models must not send output_config, got %+v", wire.OutputConfig)
136 }
137 if wire.Temperature == nil || *wire.Temperature != temp {
138 t.Fatalf("budget model should keep temperature, got %v", wire.Temperature)
139 }
140}
141
142func TestAnthropicBuildRequestStripsAssistantImages(t *testing.T) {
143 c := NewAnthropic("x", "").(*anthropicClient)
144 wire, err := c.buildRequest(Request{
145 Model: "claude-sonnet-4-5",
146 Messages: []Message{
147 {Role: RoleUser, Content: []Content{TextBlock{Text: "make an image"}}},
148 {Role: RoleAssistant, Content: []Content{
149 TextBlock{Text: "done"},
150 ImageBlock{MimeType: "image/png", Data: []byte("png")},
151 TextBlock{Text: "Saved image: `zot-gemini-image-x.png`"},
152 }},
153 {Role: RoleUser, Content: []Content{TextBlock{Text: "hello"}}},
154 },
155 })
156 if err != nil {
157 t.Fatal(err)
158 }
159 if len(wire.Messages) != 3 {
160 t.Fatalf("messages=%d", len(wire.Messages))
161 }
162 assistant := wire.Messages[1]
163 if assistant.Role != "assistant" {
164 t.Fatalf("role=%q", assistant.Role)
165 }
166 if len(assistant.Content) != 2 {
167 t.Fatalf("assistant content=%+v", assistant.Content)
168 }
169 for _, b := range assistant.Content {
170 if _, ok := b.(anthImageBlock); ok {
171 t.Fatalf("assistant image block was not stripped: %+v", assistant.Content)
172 }
173 }
174}
175
176func TestAnthropicStreamHappyPath(t *testing.T) {
177 srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
178 w.Header().Set("content-type", "text/event-stream")
179 w.WriteHeader(http.StatusOK)
180 fl, _ := w.(http.Flusher)
181 write := func(s string) {
182 _, _ = w.Write([]byte(s))
183 if fl != nil {
184 fl.Flush()
185 }
186 }
187 write("event: message_start\ndata: {\"message\":{\"usage\":{\"input_tokens\":10,\"output_tokens\":0}}}\n\n")
188 write("event: content_block_start\ndata: {\"index\":0,\"content_block\":{\"type\":\"text\",\"text\":\"\"}}\n\n")
189 write("event: content_block_delta\ndata: {\"index\":0,\"delta\":{\"type\":\"text_delta\",\"text\":\"hi\"}}\n\n")
190 write("event: content_block_stop\ndata: {\"index\":0}\n\n")
191 write("event: message_delta\ndata: {\"delta\":{\"stop_reason\":\"end_turn\"},\"usage\":{\"output_tokens\":5}}\n\n")
192 write("event: message_stop\ndata: {}\n\n")
193 }))
194 defer srv.Close()
195
196 c := NewAnthropic("x", srv.URL)
197 evs, err := c.Stream(context.Background(), Request{Model: "claude-sonnet-4-5"})
198 if err != nil {
199 t.Fatal(err)
200 }
201 var gotText string
202 var done EventDone
203 for ev := range evs {
204 switch e := ev.(type) {
205 case EventTextDelta:
206 gotText += e.Delta
207 case EventDone:
208 done = e
209 }
210 }
211 if gotText != "hi" {
212 t.Fatalf("text=%q", gotText)
213 }
214 if done.Stop != StopEnd {
215 t.Fatalf("stop=%v", done.Stop)
216 }
217}
218
219func TestOpenAICompatAnthropicReasoningEffort(t *testing.T) {
220 c := NewOpenRouter("token", "").(*openaiClient)
221 wire, err := c.buildRequest(Request{
222 Model: "anthropic/claude-opus-4.8",
223 Reasoning: "maximum",
224 Messages: []Message{{Role: RoleUser, Content: []Content{TextBlock{Text: "hi"}}}},
225 })
226 if err != nil {
227 t.Fatal(err)
228 }
229 if wire.ReasoningEffort != "xhigh" {
230 t.Fatalf("want xhigh for adaptive Anthropic model over OpenAI-compatible wire, got %q", wire.ReasoningEffort)
231 }
232
233 wire, err = c.buildRequest(Request{
234 Model: "gpt-5.1",
235 Reasoning: "maximum",
236 Messages: []Message{{Role: RoleUser, Content: []Content{TextBlock{Text: "hi"}}}},
237 })
238 if err != nil {
239 t.Fatal(err)
240 }
241 if wire.ReasoningEffort != "high" {
242 t.Fatalf("want generic OpenAI-compatible maximum clamped to high, got %q", wire.ReasoningEffort)
243 }
244}
245
246func TestOpenAIBuildRequestSkipsReasoningOnlyAssistantMessages(t *testing.T) {
247 c := NewKimi("token", "").(*openaiClient)
248 wire, err := c.buildRequest(Request{
249 Model: "kimi-for-coding",
250 Messages: []Message{
251 {Role: RoleUser, Content: []Content{TextBlock{Text: "first"}}},
252 {Role: RoleAssistant, Content: []Content{ReasoningBlock{Summary: "thinking only"}}},
253 {Role: RoleUser, Content: []Content{TextBlock{Text: "second"}}},
254 },
255 })
256 if err != nil {
257 t.Fatal(err)
258 }
259 for i, msg := range wire.Messages {
260 if msg.Role == "assistant" && msg.Content == nil && len(msg.ToolCalls) == 0 {
261 t.Fatalf("message %d is empty assistant: %+v", i, msg)
262 }
263 }
264 if got := len(wire.Messages); got != 2 {
265 t.Fatalf("messages=%d want 2 after skipping reasoning-only assistant", got)
266 }
267}
268
269func TestOpenAIStreamHappyPath(t *testing.T) {
270 srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
271 w.Header().Set("content-type", "text/event-stream")
272 w.WriteHeader(http.StatusOK)
273 fl, _ := w.(http.Flusher)
274 write := func(s string) {
275 _, _ = w.Write([]byte(s))
276 if fl != nil {
277 fl.Flush()
278 }
279 }
280 write("data: {\"choices\":[{\"index\":0,\"delta\":{\"content\":\"hel\"},\"finish_reason\":null}]}\n\n")
281 write("data: {\"choices\":[{\"index\":0,\"delta\":{\"content\":\"lo\"},\"finish_reason\":\"stop\"}]}\n\n")
282 write("data: {\"choices\":[],\"usage\":{\"prompt_tokens\":8,\"completion_tokens\":2}}\n\n")
283 write("data: [DONE]\n\n")
284 }))
285 defer srv.Close()
286
287 c := NewOpenAI("x", srv.URL)
288 evs, err := c.Stream(context.Background(), Request{Model: "gpt-5"})
289 if err != nil {
290 t.Fatal(err)
291 }
292 var gotText string
293 var done EventDone
294 for ev := range evs {
295 switch e := ev.(type) {
296 case EventTextDelta:
297 gotText += e.Delta
298 case EventDone:
299 done = e
300 }
301 }
302 if gotText != "hello" {
303 t.Fatalf("text=%q", gotText)
304 }
305 if done.Stop != StopEnd {
306 t.Fatalf("stop=%v", done.Stop)
307 }
308}
309
310func TestDiscoverOpenRouter(t *testing.T) {
311 const body = `{"data":[
312 {"id":"x/full","pricing":{"prompt":"0.000003","completion":"0.000015"},
313 "context_length":200000,"top_provider":{"max_completion_tokens":64000},
314 "supported_parameters":["reasoning"]},
315 {"id":"x/fallback","top_provider":{"context_length":128000}},
316 {"id":""}]}`
317 srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
318 _, _ = w.Write([]byte(body))
319 }))
320 defer srv.Close()
321
322 models, err := DiscoverOpenRouter(context.Background(), srv.URL)
323 if err != nil {
324 t.Fatal(err)
325 }
326 if len(models) != 2 { // empty id dropped
327 t.Fatalf("want 2 models, got %d", len(models))
328 }
329 // per-token USD -> per-1M; reasoning from supported_parameters.
330 if m := models[0]; m.Provider != "openrouter" || m.ContextWindow != 200000 ||
331 m.MaxOutput != 64000 || !m.Reasoning || m.PriceInput != 3 || m.PriceOutput != 15 {
332 t.Errorf("model[0]: %+v", m)
333 }
334 // context falls back to top_provider; no reasoning.
335 if m := models[1]; m.ContextWindow != 128000 || m.MaxOutput != 0 || m.Reasoning {
336 t.Errorf("model[1]: %+v", m)
337 }
338}
339
340// TestOpenAIOmitsZeroMaxTokens guards against sending max_tokens: 0 for
341// discovered models that don't advertise an output cap (MaxOutput == 0).
342func TestOpenAIOmitsZeroMaxTokens(t *testing.T) {
343 SetLiveModels([]Model{
344 {Provider: "openrouter", ID: "vendor/no-cap", DisplayName: "No Cap"},
345 {Provider: "openrouter", ID: "vendor/reason-no-cap", DisplayName: "Reason No Cap", Reasoning: true},
346 {Provider: "openrouter", ID: "vendor/capped", DisplayName: "Capped", MaxOutput: 4096},
347 })
348 defer SetLiveModels(nil)
349
350 c := NewOpenAI("x", "").(*openaiClient)
351
352 got, err := c.buildRequest(Request{Model: "vendor/no-cap"})
353 if err != nil {
354 t.Fatal(err)
355 }
356 if got.MaxTokens != nil {
357 t.Errorf("expected max_tokens omitted, got %d", *got.MaxTokens)
358 }
359
360 got, err = c.buildRequest(Request{Model: "vendor/reason-no-cap"})
361 if err != nil {
362 t.Fatal(err)
363 }
364 if got.MaxCompletionTok != nil {
365 t.Errorf("expected max_completion_tokens omitted, got %d", *got.MaxCompletionTok)
366 }
367
368 got, err = c.buildRequest(Request{Model: "vendor/capped"})
369 if err != nil {
370 t.Fatal(err)
371 }
372 if got.MaxTokens == nil || *got.MaxTokens != 4096 {
373 t.Errorf("expected max_tokens 4096, got %v", got.MaxTokens)
374 }
375}