File size: 10,219 Bytes
8d3471e | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 | package claude
import (
"encoding/json"
"net/http"
"net/http/httptest"
"strings"
"testing"
)
type claudeProxyStoreStub struct {
aliases map[string]string
}
func (s claudeProxyStoreStub) ModelAliases() map[string]string { return s.aliases }
func (claudeProxyStoreStub) CurrentInputFileEnabled() bool { return true }
func (claudeProxyStoreStub) CurrentInputFileMinChars() int { return 0 }
type openAIProxyStub struct {
status int
body string
}
func TestClaudeProxyViaOpenAIPrefersGlobalAliasMapping(t *testing.T) {
openAI := &openAIProxyCaptureStub{}
h := &Handler{
Store: claudeProxyStoreStub{
aliases: map[string]string{"claude-sonnet-4-6": "deepseek-v4-flash"},
},
OpenAI: openAI,
}
req := httptest.NewRequest(http.MethodPost, "/anthropic/v1/messages", strings.NewReader(`{"model":"claude-sonnet-4-6","messages":[{"role":"user","content":"hi"}],"stream":false}`))
rec := httptest.NewRecorder()
h.Messages(rec, req)
if rec.Code != http.StatusOK {
t.Fatalf("unexpected status: %d body=%s", rec.Code, rec.Body.String())
}
if got := strings.TrimSpace(openAI.seenModel); got != "deepseek-v4-flash" {
t.Fatalf("expected global alias mapped proxy model deepseek-v4-flash, got %q", got)
}
}
func (s openAIProxyStub) ChatCompletions(w http.ResponseWriter, _ *http.Request) {
if s.status == 0 {
s.status = http.StatusOK
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(s.status)
_, _ = w.Write([]byte(s.body))
}
type openAIProxyCaptureStub struct {
seenModel string
seenReq map[string]any
}
func (s *openAIProxyCaptureStub) ChatCompletions(w http.ResponseWriter, r *http.Request) {
var req map[string]any
_ = json.NewDecoder(r.Body).Decode(&req)
s.seenReq = req
if m, ok := req["model"].(string); ok {
s.seenModel = m
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
_, _ = w.Write([]byte(`{"id":"ok","choices":[{"message":{"role":"assistant","content":"ok"}}]}`))
}
func TestClaudeProxyViaOpenAIVercelPreparePassthrough(t *testing.T) {
h := &Handler{OpenAI: openAIProxyStub{status: 200, body: `{"lease_id":"lease_123","payload":{"a":1}}`}}
req := httptest.NewRequest(http.MethodPost, "/anthropic/v1/messages?__stream_prepare=1", strings.NewReader(`{"model":"claude-sonnet-4-5","messages":[{"role":"user","content":"hi"}],"stream":true}`))
rec := httptest.NewRecorder()
h.Messages(rec, req)
if rec.Code != http.StatusOK {
t.Fatalf("unexpected status: %d body=%s", rec.Code, rec.Body.String())
}
var out map[string]any
if err := json.Unmarshal(rec.Body.Bytes(), &out); err != nil {
t.Fatalf("expected json response, got err=%v body=%s", err, rec.Body.String())
}
if _, ok := out["lease_id"]; !ok {
t.Fatalf("expected lease_id in prepare passthrough, got=%v", out)
}
}
func TestClaudeProxyViaOpenAIUsesGlobalAliasMapping(t *testing.T) {
openAI := &openAIProxyCaptureStub{}
h := &Handler{
Store: claudeProxyStoreStub{aliases: map[string]string{"claude-3-opus": "deepseek-v4-pro"}},
OpenAI: openAI,
}
req := httptest.NewRequest(http.MethodPost, "/anthropic/v1/messages", strings.NewReader(`{"model":"claude-3-opus","messages":[{"role":"user","content":"hi"}],"stream":false}`))
rec := httptest.NewRecorder()
h.Messages(rec, req)
if rec.Code != http.StatusOK {
t.Fatalf("unexpected status: %d body=%s", rec.Code, rec.Body.String())
}
if got := strings.TrimSpace(openAI.seenModel); got != "deepseek-v4-pro" {
t.Fatalf("expected mapped proxy model deepseek-v4-pro, got %q", got)
}
}
func TestClaudeProxyViaOpenAIPreservesThinkingOverride(t *testing.T) {
openAI := &openAIProxyCaptureStub{}
h := &Handler{
Store: claudeProxyStoreStub{aliases: map[string]string{"claude-sonnet-4-6": "deepseek-v4-flash"}},
OpenAI: openAI,
}
req := httptest.NewRequest(http.MethodPost, "/anthropic/v1/messages", strings.NewReader(`{"model":"claude-sonnet-4-6","messages":[{"role":"user","content":"hi"}],"thinking":{"type":"disabled"},"stream":false}`))
rec := httptest.NewRecorder()
h.Messages(rec, req)
if rec.Code != http.StatusOK {
t.Fatalf("unexpected status: %d body=%s", rec.Code, rec.Body.String())
}
thinking, _ := openAI.seenReq["thinking"].(map[string]any)
if thinking["type"] != "disabled" {
t.Fatalf("expected translated OpenAI request to preserve disabled thinking, got %#v", openAI.seenReq)
}
}
func TestClaudeProxyViaOpenAIEnablesThinkingInternallyByDefaultForNonStream(t *testing.T) {
openAI := &openAIProxyCaptureStub{}
h := &Handler{
Store: claudeProxyStoreStub{aliases: map[string]string{"claude-sonnet-4-6": "deepseek-v4-flash"}},
OpenAI: openAI,
}
req := httptest.NewRequest(http.MethodPost, "/anthropic/v1/messages", strings.NewReader(`{"model":"claude-sonnet-4-6","messages":[{"role":"user","content":"hi"}],"stream":false}`))
rec := httptest.NewRecorder()
h.Messages(rec, req)
if rec.Code != http.StatusOK {
t.Fatalf("unexpected status: %d body=%s", rec.Code, rec.Body.String())
}
thinking, _ := openAI.seenReq["thinking"].(map[string]any)
if thinking["type"] != "enabled" {
t.Fatalf("expected Claude non-stream default to enable downstream thinking internally, got %#v", openAI.seenReq)
}
}
func TestClaudeProxyViaOpenAIEnablesThinkingWhenRequested(t *testing.T) {
openAI := &openAIProxyCaptureStub{}
h := &Handler{
Store: claudeProxyStoreStub{aliases: map[string]string{"claude-sonnet-4-6": "deepseek-v4-flash"}},
OpenAI: openAI,
}
req := httptest.NewRequest(http.MethodPost, "/anthropic/v1/messages", strings.NewReader(`{"model":"claude-sonnet-4-6","messages":[{"role":"user","content":"hi"}],"thinking":{"type":"enabled","budget_tokens":1024},"stream":false}`))
rec := httptest.NewRecorder()
h.Messages(rec, req)
if rec.Code != http.StatusOK {
t.Fatalf("unexpected status: %d body=%s", rec.Code, rec.Body.String())
}
thinking, _ := openAI.seenReq["thinking"].(map[string]any)
if thinking["type"] != "enabled" {
t.Fatalf("expected Claude explicit thinking to enable downstream thinking, got %#v", openAI.seenReq)
}
}
func TestClaudeProxyViaOpenAIEnablesStreamThinkingByDefault(t *testing.T) {
openAI := &openAIProxyCaptureStub{}
h := &Handler{
Store: claudeProxyStoreStub{aliases: map[string]string{"claude-sonnet-4-6": "deepseek-v4-flash"}},
OpenAI: openAI,
}
req := httptest.NewRequest(http.MethodPost, "/anthropic/v1/messages", strings.NewReader(`{"model":"claude-sonnet-4-6","messages":[{"role":"user","content":"hi"}],"stream":true}`))
rec := httptest.NewRecorder()
h.Messages(rec, req)
thinking, _ := openAI.seenReq["thinking"].(map[string]any)
if thinking["type"] != "enabled" {
t.Fatalf("expected Claude stream default to enable downstream thinking, got %#v", openAI.seenReq)
}
}
func TestClaudeProxyViaOpenAIExposesThinkingBlocksByDefault(t *testing.T) {
body := `{"id":"chatcmpl_1","object":"chat.completion","created":1,"model":"claude-sonnet-4-5","choices":[{"index":0,"message":{"role":"assistant","content":null,"reasoning_content":"internal reasoning","tool_calls":[{"id":"call_1","type":"function","function":{"name":"search","arguments":"{\"q\":\"x\"}"}}]},"finish_reason":"tool_calls"}],"usage":{"prompt_tokens":1,"completion_tokens":1,"total_tokens":2}}`
h := &Handler{OpenAI: openAIProxyStub{status: 200, body: body}}
req := httptest.NewRequest(http.MethodPost, "/anthropic/v1/messages", strings.NewReader(`{"model":"claude-sonnet-4-5","messages":[{"role":"user","content":"hi"}],"stream":false}`))
rec := httptest.NewRecorder()
h.Messages(rec, req)
if rec.Code != http.StatusOK {
t.Fatalf("unexpected status: %d body=%s", rec.Code, rec.Body.String())
}
got := rec.Body.String()
if !strings.Contains(got, `"type":"thinking"`) {
t.Fatalf("expected converted Claude response to expose thinking block, got %s", got)
}
if !strings.Contains(got, `"tool_use"`) {
t.Fatalf("expected converted Claude response to preserve tool_use, got %s", got)
}
}
func TestClaudeProxyViaOpenAIStripsThinkingBlocksWhenDisabled(t *testing.T) {
body := `{"id":"chatcmpl_1","object":"chat.completion","created":1,"model":"claude-sonnet-4-5","choices":[{"index":0,"message":{"role":"assistant","content":"ok","reasoning_content":"internal reasoning"},"finish_reason":"stop"}],"usage":{"prompt_tokens":1,"completion_tokens":1,"total_tokens":2}}`
h := &Handler{OpenAI: openAIProxyStub{status: 200, body: body}}
req := httptest.NewRequest(http.MethodPost, "/anthropic/v1/messages", strings.NewReader(`{"model":"claude-sonnet-4-5","messages":[{"role":"user","content":"hi"}],"thinking":{"type":"disabled"},"stream":false}`))
rec := httptest.NewRecorder()
h.Messages(rec, req)
if rec.Code != http.StatusOK {
t.Fatalf("unexpected status: %d body=%s", rec.Code, rec.Body.String())
}
got := rec.Body.String()
if strings.Contains(got, `"type":"thinking"`) {
t.Fatalf("expected disabled thinking to strip thinking block, got %s", got)
}
}
func TestClaudeProxyTranslatesInlineImageToOpenAIDataURL(t *testing.T) {
openAI := &openAIProxyCaptureStub{}
h := &Handler{OpenAI: openAI}
req := httptest.NewRequest(http.MethodPost, "/anthropic/v1/messages", strings.NewReader(`{"model":"claude-sonnet-4-5","messages":[{"role":"user","content":[{"type":"text","text":"hello"},{"type":"image","source":{"type":"base64","media_type":"image/png","data":"QUJDRA=="}}]}],"stream":false}`))
rec := httptest.NewRecorder()
h.Messages(rec, req)
if rec.Code != http.StatusOK {
t.Fatalf("unexpected status: %d body=%s", rec.Code, rec.Body.String())
}
messages, _ := openAI.seenReq["messages"].([]any)
if len(messages) != 1 {
t.Fatalf("expected one translated message, got %#v", openAI.seenReq)
}
msg, _ := messages[0].(map[string]any)
content, _ := msg["content"].([]any)
if len(content) != 2 {
t.Fatalf("expected translated content blocks, got %#v", msg)
}
imageBlock, _ := content[1].(map[string]any)
if strings.TrimSpace(asString(imageBlock["type"])) != "image_url" {
t.Fatalf("expected image_url block, got %#v", imageBlock)
}
imageURL, _ := imageBlock["image_url"].(map[string]any)
if !strings.HasPrefix(strings.TrimSpace(asString(imageURL["url"])), "data:image/png;base64,") {
t.Fatalf("expected translated data url, got %#v", imageBlock)
}
}
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