mirror of
https://github.com/CJackHwang/ds2api.git
synced 2026-05-05 08:55:28 +08:00
393 lines
13 KiB
Go
393 lines
13 KiB
Go
package chat
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import (
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"encoding/json"
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"io"
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"net/http"
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"net/http/httptest"
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"strings"
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"testing"
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)
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func makeSSEHTTPResponse(lines ...string) *http.Response {
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body := strings.Join(lines, "\n")
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if !strings.HasSuffix(body, "\n") {
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body += "\n"
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}
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return &http.Response{
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StatusCode: http.StatusOK,
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Header: make(http.Header),
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Body: io.NopCloser(strings.NewReader(body)),
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}
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}
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func decodeJSONBody(t *testing.T, body string) map[string]any {
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t.Helper()
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var out map[string]any
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if err := json.Unmarshal([]byte(body), &out); err != nil {
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t.Fatalf("decode json failed: %v, body=%s", err, body)
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}
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return out
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}
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func parseSSEDataFrames(t *testing.T, body string) ([]map[string]any, bool) {
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t.Helper()
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lines := strings.Split(body, "\n")
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frames := make([]map[string]any, 0, len(lines))
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done := false
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for _, line := range lines {
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line = strings.TrimSpace(line)
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if !strings.HasPrefix(line, "data:") {
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continue
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}
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payload := strings.TrimSpace(strings.TrimPrefix(line, "data:"))
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if payload == "" {
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continue
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}
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if payload == "[DONE]" {
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done = true
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continue
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}
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var frame map[string]any
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if err := json.Unmarshal([]byte(payload), &frame); err != nil {
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t.Fatalf("decode sse frame failed: %v, payload=%s", err, payload)
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}
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frames = append(frames, frame)
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}
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return frames, done
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}
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func streamHasToolCallsDelta(frames []map[string]any) bool {
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for _, frame := range frames {
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choices, _ := frame["choices"].([]any)
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for _, item := range choices {
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choice, _ := item.(map[string]any)
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delta, _ := choice["delta"].(map[string]any)
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if _, ok := delta["tool_calls"]; ok {
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return true
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}
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}
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}
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return false
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}
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func streamFinishReason(frames []map[string]any) string {
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for _, frame := range frames {
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choices, _ := frame["choices"].([]any)
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for _, item := range choices {
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choice, _ := item.(map[string]any)
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if reason, ok := choice["finish_reason"].(string); ok && reason != "" {
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return reason
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}
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}
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}
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return ""
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}
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// Backward-compatible alias for historical test name used in CI logs.
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func TestHandleNonStreamReturns429WhenUpstreamOutputEmpty(t *testing.T) {
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h := &Handler{}
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resp := makeSSEHTTPResponse(
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`data: {"p":"response/content","v":""}`,
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`data: [DONE]`,
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)
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rec := httptest.NewRecorder()
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h.handleNonStream(rec, resp, "cid-empty", "deepseek-v4-flash", "prompt", false, false, nil, nil)
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if rec.Code != http.StatusTooManyRequests {
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t.Fatalf("expected status 429 for empty upstream output, got %d body=%s", rec.Code, rec.Body.String())
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}
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out := decodeJSONBody(t, rec.Body.String())
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errObj, _ := out["error"].(map[string]any)
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if asString(errObj["code"]) != "upstream_empty_output" {
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t.Fatalf("expected code=upstream_empty_output, got %#v", out)
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}
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}
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func TestHandleNonStreamReturnsContentFilterErrorWhenUpstreamFilteredWithoutOutput(t *testing.T) {
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h := &Handler{}
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resp := makeSSEHTTPResponse(
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`data: {"code":"content_filter"}`,
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`data: [DONE]`,
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)
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rec := httptest.NewRecorder()
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h.handleNonStream(rec, resp, "cid-empty-filtered", "deepseek-v4-flash", "prompt", false, false, nil, nil)
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if rec.Code != http.StatusBadRequest {
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t.Fatalf("expected status 400 for filtered upstream output, got %d body=%s", rec.Code, rec.Body.String())
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}
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out := decodeJSONBody(t, rec.Body.String())
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errObj, _ := out["error"].(map[string]any)
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if asString(errObj["code"]) != "content_filter" {
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t.Fatalf("expected code=content_filter, got %#v", out)
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}
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}
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func TestHandleNonStreamReturns429WhenUpstreamHasOnlyThinking(t *testing.T) {
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h := &Handler{}
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resp := makeSSEHTTPResponse(
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`data: {"p":"response/thinking_content","v":"Only thinking"}`,
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`data: [DONE]`,
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)
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rec := httptest.NewRecorder()
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h.handleNonStream(rec, resp, "cid-thinking-only", "deepseek-v4-pro", "prompt", true, false, nil, nil)
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if rec.Code != http.StatusTooManyRequests {
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t.Fatalf("expected status 429 for thinking-only upstream output, got %d body=%s", rec.Code, rec.Body.String())
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}
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out := decodeJSONBody(t, rec.Body.String())
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errObj, _ := out["error"].(map[string]any)
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if asString(errObj["code"]) != "upstream_empty_output" {
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t.Fatalf("expected code=upstream_empty_output, got %#v", out)
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}
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}
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func TestHandleNonStreamPromotesThinkingToolCallsWhenTextEmpty(t *testing.T) {
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h := &Handler{}
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resp := makeSSEHTTPResponse(
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`data: {"p":"response/thinking_content","v":"<tool_calls><invoke name=\"search\"><parameter name=\"q\">from-thinking</parameter></invoke></tool_calls>"}`,
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`data: [DONE]`,
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)
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rec := httptest.NewRecorder()
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h.handleNonStream(rec, resp, "cid-thinking-tool", "deepseek-v4-pro", "prompt", true, false, []string{"search"}, nil)
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if rec.Code != http.StatusOK {
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t.Fatalf("expected 200 for thinking tool calls, got %d body=%s", rec.Code, rec.Body.String())
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}
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out := decodeJSONBody(t, rec.Body.String())
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choices, _ := out["choices"].([]any)
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if len(choices) == 0 {
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t.Fatalf("expected choices, got %#v", out)
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}
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choice, _ := choices[0].(map[string]any)
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if got := asString(choice["finish_reason"]); got != "tool_calls" {
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t.Fatalf("expected finish_reason=tool_calls, got %#v", choice["finish_reason"])
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}
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message, _ := choice["message"].(map[string]any)
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toolCalls, _ := message["tool_calls"].([]any)
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if len(toolCalls) != 1 {
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t.Fatalf("expected one tool call, got %#v", message["tool_calls"])
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}
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if content, exists := message["content"]; !exists || content != nil {
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t.Fatalf("expected content nil when tool call promoted, got %#v", message["content"])
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}
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}
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func TestHandleNonStreamPromotesHiddenThinkingDSMLToolCallsWhenTextEmpty(t *testing.T) {
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h := &Handler{}
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resp := makeSSEHTTPResponse(
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`data: {"p":"response/thinking_content","v":"<|DSML|tool_calls><|DSML|invoke name=\"search\"><|DSML|parameter name=\"q\">from-hidden-thinking</|DSML|parameter></|DSML|invoke></|DSML|tool_calls>"}`,
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`data: [DONE]`,
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)
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rec := httptest.NewRecorder()
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h.handleNonStream(rec, resp, "cid-hidden-thinking-tool", "deepseek-v4-pro", "prompt", false, false, []string{"search"}, nil)
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if rec.Code != http.StatusOK {
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t.Fatalf("expected 200 for hidden thinking tool calls, got %d body=%s", rec.Code, rec.Body.String())
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}
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out := decodeJSONBody(t, rec.Body.String())
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choices, _ := out["choices"].([]any)
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choice, _ := choices[0].(map[string]any)
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message, _ := choice["message"].(map[string]any)
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if _, ok := message["reasoning_content"]; ok {
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t.Fatalf("expected hidden thinking not to be exposed, got %#v", message)
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}
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toolCalls, _ := message["tool_calls"].([]any)
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if len(toolCalls) != 1 {
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t.Fatalf("expected one hidden-thinking tool call, got %#v", message["tool_calls"])
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}
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if got := asString(choice["finish_reason"]); got != "tool_calls" {
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t.Fatalf("expected finish_reason=tool_calls, got %#v", choice["finish_reason"])
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}
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}
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func TestHandleStreamToolsPlainTextStreamsBeforeFinish(t *testing.T) {
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h := &Handler{}
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resp := makeSSEHTTPResponse(
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`data: {"p":"response/content","v":"你好，"}`,
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`data: {"p":"response/content","v":"这是普通文本回复。"}`,
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`data: [DONE]`,
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)
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rec := httptest.NewRecorder()
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req := httptest.NewRequest(http.MethodPost, "/v1/chat/completions", nil)
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h.handleStream(rec, req, resp, "cid6", "deepseek-v4-flash", "prompt", false, false, []string{"search"}, nil)
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frames, done := parseSSEDataFrames(t, rec.Body.String())
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if !done {
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t.Fatalf("expected [DONE], body=%s", rec.Body.String())
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}
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if streamHasToolCallsDelta(frames) {
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t.Fatalf("did not expect tool_calls delta for plain text: %s", rec.Body.String())
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}
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content := strings.Builder{}
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for _, frame := range frames {
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choices, _ := frame["choices"].([]any)
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for _, item := range choices {
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choice, _ := item.(map[string]any)
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delta, _ := choice["delta"].(map[string]any)
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if c, ok := delta["content"].(string); ok {
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content.WriteString(c)
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}
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}
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}
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if got := content.String(); got == "" {
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t.Fatalf("expected streamed content in tool mode plain text, body=%s", rec.Body.String())
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}
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if streamFinishReason(frames) != "stop" {
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t.Fatalf("expected finish_reason=stop, body=%s", rec.Body.String())
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}
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}
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func TestHandleStreamIncompleteCapturedToolJSONFlushesAsTextOnFinalize(t *testing.T) {
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h := &Handler{}
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resp := makeSSEHTTPResponse(
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`data: {"p":"response/content","v":"{\"tool_calls\":[{\"name\":\"search\""}`,
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`data: [DONE]`,
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)
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rec := httptest.NewRecorder()
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req := httptest.NewRequest(http.MethodPost, "/v1/chat/completions", nil)
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h.handleStream(rec, req, resp, "cid10", "deepseek-v4-flash", "prompt", false, false, []string{"search"}, nil)
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frames, done := parseSSEDataFrames(t, rec.Body.String())
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if !done {
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t.Fatalf("expected [DONE], body=%s", rec.Body.String())
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}
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if streamHasToolCallsDelta(frames) {
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t.Fatalf("did not expect tool_calls delta for incomplete json, body=%s", rec.Body.String())
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}
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content := strings.Builder{}
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for _, frame := range frames {
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choices, _ := frame["choices"].([]any)
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for _, item := range choices {
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choice, _ := item.(map[string]any)
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delta, _ := choice["delta"].(map[string]any)
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if c, ok := delta["content"].(string); ok {
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content.WriteString(c)
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}
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}
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}
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if !strings.Contains(strings.ToLower(content.String()), "tool_calls") || !strings.Contains(content.String(), "{") {
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t.Fatalf("expected incomplete capture to flush as plain text instead of stalling, got=%q", content.String())
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}
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}
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func TestHandleStreamPromotesThinkingToolCallsOnFinalizeWithoutMidstreamIntercept(t *testing.T) {
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h := &Handler{}
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resp := makeSSEHTTPResponse(
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`data: {"p":"response/thinking_content","v":"<tool_calls><invoke name=\"search\"><parameter name=\"q\">from-thinking</parameter></invoke></tool_calls>"}`,
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`data: [DONE]`,
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)
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rec := httptest.NewRecorder()
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req := httptest.NewRequest(http.MethodPost, "/v1/chat/completions", nil)
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h.handleStream(rec, req, resp, "cid-thinking-stream", "deepseek-v4-pro", "prompt", true, false, []string{"search"}, nil)
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frames, done := parseSSEDataFrames(t, rec.Body.String())
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if !done {
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t.Fatalf("expected [DONE], body=%s", rec.Body.String())
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}
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if !streamHasToolCallsDelta(frames) {
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t.Fatalf("expected tool_calls delta from finalize fallback, body=%s", rec.Body.String())
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}
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reasoningSeen := false
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for _, frame := range frames {
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choices, _ := frame["choices"].([]any)
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for _, item := range choices {
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choice, _ := item.(map[string]any)
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delta, _ := choice["delta"].(map[string]any)
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if asString(delta["reasoning_content"]) != "" {
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reasoningSeen = true
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}
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}
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}
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if !reasoningSeen {
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t.Fatalf("expected reasoning_content to stream before finalize fallback, body=%s", rec.Body.String())
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}
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if streamFinishReason(frames) != "tool_calls" {
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t.Fatalf("expected finish_reason=tool_calls, body=%s", rec.Body.String())
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}
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}
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func TestHandleStreamPromotesHiddenThinkingDSMLToolCallsOnFinalize(t *testing.T) {
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h := &Handler{}
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resp := makeSSEHTTPResponse(
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`data: {"p":"response/thinking_content","v":"<|DSML|tool_calls><|DSML|invoke name=\"search\"><|DSML|parameter name=\"q\">from-hidden-thinking</|DSML|parameter></|DSML|invoke></|DSML|tool_calls>"}`,
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`data: [DONE]`,
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)
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rec := httptest.NewRecorder()
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req := httptest.NewRequest(http.MethodPost, "/v1/chat/completions", nil)
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h.handleStream(rec, req, resp, "cid-hidden-thinking-stream", "deepseek-v4-pro", "prompt", false, false, []string{"search"}, nil)
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frames, done := parseSSEDataFrames(t, rec.Body.String())
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if !done {
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t.Fatalf("expected [DONE], body=%s", rec.Body.String())
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}
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if !streamHasToolCallsDelta(frames) {
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t.Fatalf("expected tool_calls delta from hidden thinking fallback, body=%s", rec.Body.String())
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}
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for _, frame := range frames {
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choices, _ := frame["choices"].([]any)
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for _, item := range choices {
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choice, _ := item.(map[string]any)
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delta, _ := choice["delta"].(map[string]any)
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if asString(delta["reasoning_content"]) != "" {
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t.Fatalf("did not expect hidden reasoning_content delta, body=%s", rec.Body.String())
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}
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}
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}
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if streamFinishReason(frames) != "tool_calls" {
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t.Fatalf("expected finish_reason=tool_calls, body=%s", rec.Body.String())
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}
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}
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func TestHandleStreamEmitsDistinctToolCallIDsAcrossSeparateToolBlocks(t *testing.T) {
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h := &Handler{}
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resp := makeSSEHTTPResponse(
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`data: {"p":"response/content","v":"前置文本\n<tool_calls>\n <invoke name=\"read_file\">\n <parameter name=\"path\">README.MD</parameter>\n </invoke>\n</tool_calls>"}`,
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`data: {"p":"response/content","v":"中间文本\n<tool_calls>\n <invoke name=\"search\">\n <parameter name=\"q\">golang</parameter>\n </invoke>\n</tool_calls>"}`,
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`data: [DONE]`,
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)
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rec := httptest.NewRecorder()
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req := httptest.NewRequest(http.MethodPost, "/v1/chat/completions", nil)
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h.handleStream(rec, req, resp, "cid-multi", "deepseek-v4-flash", "prompt", false, false, []string{"read_file", "search"}, nil)
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frames, done := parseSSEDataFrames(t, rec.Body.String())
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if !done {
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t.Fatalf("expected [DONE], body=%s", rec.Body.String())
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}
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ids := make([]string, 0, 2)
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seen := make(map[string]struct{})
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for _, frame := range frames {
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choices, _ := frame["choices"].([]any)
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for _, item := range choices {
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choice, _ := item.(map[string]any)
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delta, _ := choice["delta"].(map[string]any)
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toolCalls, _ := delta["tool_calls"].([]any)
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for _, rawCall := range toolCalls {
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call, _ := rawCall.(map[string]any)
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id := asString(call["id"])
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if id == "" {
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continue
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}
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if _, ok := seen[id]; ok {
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continue
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}
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seen[id] = struct{}{}
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ids = append(ids, id)
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}
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}
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}
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if len(ids) != 2 {
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t.Fatalf("expected two distinct tool call ids, got %#v body=%s", ids, rec.Body.String())
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}
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if ids[0] == ids[1] {
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t.Fatalf("expected distinct tool call ids across blocks, got %#v body=%s", ids, rec.Body.String())
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}
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}
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