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
|
package llm
import (
"context"
"encoding/json"
"fmt"
"io"
"net/http"
"net/http/httptest"
"strings"
"sync/atomic"
"testing"
"time"
)
func TestChat_ParsesCompletion(t *testing.T) {
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.URL.Path != "/v1/chat/completions" {
t.Errorf("unexpected path %q", r.URL.Path)
}
if r.Header.Get("Authorization") != "Bearer test-key" {
t.Errorf("missing/wrong bearer header: %q", r.Header.Get("Authorization"))
}
var body openAIRequest
if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
t.Fatalf("decode body: %v", err)
}
if body.Model != "test-model" {
t.Errorf("model: want test-model got %q", body.Model)
}
if len(body.Messages) != 1 || body.Messages[0].Content != "hello" {
t.Errorf("messages mismatch: %+v", body.Messages)
}
if body.ResponseFormat == nil || body.ResponseFormat.Type != "json_object" {
t.Errorf("expected response_format json_object, got %+v", body.ResponseFormat)
}
w.Header().Set("Content-Type", "application/json")
fmt.Fprintln(w, `{
"model": "test-model",
"choices": [{"message": {"role": "assistant", "content": "world"}, "finish_reason": "stop"}],
"usage": {"prompt_tokens": 4, "completion_tokens": 7}
}`)
}))
defer srv.Close()
c := &Client{Endpoint: srv.URL + "/v1", Model: "test-model", APIKey: "test-key"}
resp, err := c.Chat(context.Background(), ChatRequest{
Messages: []Message{{Role: "user", Content: "hello"}},
ResponseJSON: true,
})
if err != nil {
t.Fatalf("Chat: %v", err)
}
if resp.Content != "world" {
t.Errorf("content: want world got %q", resp.Content)
}
if resp.PromptTokens != 4 || resp.OutputTokens != 7 {
t.Errorf("tokens mismatch: %+v", resp)
}
if resp.FinishReason != "stop" {
t.Errorf("finish_reason: want stop got %q", resp.FinishReason)
}
}
func TestChatStream_ParsesSSE(t *testing.T) {
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/event-stream")
flusher, _ := w.(http.Flusher)
chunks := []string{
`{"model":"test-model","choices":[{"delta":{"content":"Hel"},"finish_reason":""}]}`,
`{"model":"test-model","choices":[{"delta":{"content":"lo, "},"finish_reason":""}]}`,
`{"model":"test-model","choices":[{"delta":{"content":"world"},"finish_reason":"stop"}]}`,
`{"model":"test-model","choices":[],"usage":{"prompt_tokens":3,"completion_tokens":5}}`,
}
for _, c := range chunks {
fmt.Fprintf(w, "data: %s\n\n", c)
if flusher != nil {
flusher.Flush()
}
}
fmt.Fprint(w, "data: [DONE]\n\n")
}))
defer srv.Close()
c := &Client{Endpoint: srv.URL + "/v1", Model: "test-model"}
var deltas []string
resp, err := c.ChatStream(context.Background(),
ChatRequest{Messages: []Message{{Role: "user", Content: "hi"}}},
func(d string) { deltas = append(deltas, d) },
)
if err != nil {
t.Fatalf("ChatStream: %v", err)
}
if got := strings.Join(deltas, ""); got != "Hello, world" {
t.Errorf("aggregated deltas: want %q got %q", "Hello, world", got)
}
if resp.Content != "Hello, world" {
t.Errorf("content: want %q got %q", "Hello, world", resp.Content)
}
if resp.PromptTokens != 3 || resp.OutputTokens != 5 {
t.Errorf("tokens: %+v", resp)
}
if resp.FinishReason != "stop" {
t.Errorf("finish_reason: want stop got %q", resp.FinishReason)
}
}
func TestChat_RetriesOn429(t *testing.T) {
var calls int32
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
n := atomic.AddInt32(&calls, 1)
if n == 1 {
w.Header().Set("Retry-After", "1")
http.Error(w, "slow down", http.StatusTooManyRequests)
return
}
w.Header().Set("Content-Type", "application/json")
fmt.Fprintln(w, `{
"model":"m","choices":[{"message":{"role":"assistant","content":"ok"},"finish_reason":"stop"}],
"usage":{"prompt_tokens":1,"completion_tokens":1}
}`)
}))
defer srv.Close()
c := &Client{
Endpoint: srv.URL + "/v1",
Model: "m",
HTTPClient: &http.Client{Timeout: 5 * time.Second},
}
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
resp, err := c.Chat(ctx, ChatRequest{Messages: []Message{{Role: "user", Content: "hi"}}})
if err != nil {
t.Fatalf("Chat: %v", err)
}
if resp.Content != "ok" {
t.Errorf("content: want ok got %q", resp.Content)
}
if got := atomic.LoadInt32(&calls); got != 2 {
t.Errorf("expected 2 server calls (1 retry), got %d", got)
}
}
// Sanity: errFromStatus produces a string that retry.IsRateLimitError matches.
func TestErrFromStatus_RateLimitMarker(t *testing.T) {
resp := &http.Response{
StatusCode: http.StatusTooManyRequests,
Header: http.Header{"Retry-After": []string{"30"}},
}
body, _ := io.ReadAll(strings.NewReader("limit hit"))
err := errFromStatus(resp, body)
if !strings.Contains(strings.ToLower(err.Error()), "rate limit") {
t.Errorf("error should contain 'rate limit', got: %v", err)
}
if !strings.Contains(err.Error(), "retry-after: 30") {
t.Errorf("error should embed retry-after, got: %v", err)
}
}
|
