fix: use stream for codex auto test (#4325)

controller/channel-test.go

@@ -460,7 +460,7 @@ func testChannel(channel *model.Channel, testModel string, endpointType string,
 			newAPIError: types.NewOpenAIError(err, types.ErrorCodeReadResponseBodyFailed, http.StatusInternalServerError),
 		}
 	}
-	if bodyErr := detectErrorFromTestResponseBody(respBody); bodyErr != nil {
+	if bodyErr := validateTestResponseBody(respBody, isStream); bodyErr != nil {
 		return testResult{
 			context:     c,
 			localErr:    bodyErr,
@@ -570,6 +570,42 @@ func detectErrorFromTestResponseBody(respBody []byte) error {
 	return nil
 }
 
+func validateStreamTestResponseBody(respBody []byte) error {
+	b := bytes.TrimSpace(respBody)
+	if len(b) == 0 {
+		return errors.New("stream response body is empty")
+	}
+
+	for _, line := range bytes.Split(b, []byte{'\n'}) {
+		line = bytes.TrimSpace(line)
+		if len(line) == 0 || !bytes.HasPrefix(line, []byte("data:")) {
+			continue
+		}
+		payload := bytes.TrimSpace(bytes.TrimPrefix(line, []byte("data:")))
+		if len(payload) == 0 || bytes.Equal(payload, []byte("[DONE]")) {
+			continue
+		}
+
+		return nil
+	}
+
+	return errors.New("stream response body does not contain a valid stream event")
+}
+
+func validateTestResponseBody(respBody []byte, isStream bool) error {
+	if bodyErr := detectErrorFromTestResponseBody(respBody); bodyErr != nil {
+		return bodyErr
+	}
+	if isStream {
+		return validateStreamTestResponseBody(respBody)
+	}
+	return nil
+}
+
+func shouldUseStreamForAutomaticChannelTest(channel *model.Channel) bool {
+	return channel != nil && channel.Type == constant.ChannelTypeCodex
+}
+
 func detectErrorMessageFromJSONBytes(jsonBytes []byte) string {
 	if len(jsonBytes) == 0 {
 		return ""
@@ -822,7 +858,7 @@ func testAllChannels(notify bool) error {
 			}
 			isChannelEnabled := channel.Status == common.ChannelStatusEnabled
 			tik := time.Now()
-			result := testChannel(channel, "", "", false)
+			result := testChannel(channel, "", "", shouldUseStreamForAutomaticChannelTest(channel))
 			tok := time.Now()
 			milliseconds := tok.Sub(tik).Milliseconds()