修复支付网关地址空白字符

backend/internal/integrations/payment/lakala/client_test.go

@@ -125,6 +125,14 @@ func TestCreatePaymentSetsCounterParamWhenPayModeConfigured(t *testing.T) {
 	}
 }
 
+func TestCreatePaymentTrimsGatewayURLWhitespace(t *testing.T) {
+	body := captureCreatePaymentBody(t, "", "\t")
+	reqData := body["req_data"].(map[string]any)
+	if reqData["out_order_no"] != "ORDER1" {
+		t.Fatalf("out_order_no = %#v, want ORDER1", reqData["out_order_no"])
+	}
+}
+
 func TestCreatePaymentUsesShanghaiTimeWhenLocalIsUTC(t *testing.T) {
 	oldLocal := time.Local
 	time.Local = time.UTC
@@ -179,7 +187,7 @@ func testKeyPairPEM(t *testing.T, key *rsa.PrivateKey) (string, string) {
 	return privatePEM, certPEM
 }
 
-func captureCreatePaymentBody(t *testing.T, payMode string) map[string]any {
+func captureCreatePaymentBody(t *testing.T, payMode string, gatewaySuffix ...string) map[string]any {
 	t.Helper()
 	var captured map[string]any
 	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
@@ -199,8 +207,12 @@ func captureCreatePaymentBody(t *testing.T, payMode string) map[string]any {
 		t.Fatalf("generate key: %v", err)
 	}
 	privatePEM, certPEM := testKeyPairPEM(t, key)
+	gatewayURL := server.URL
+	if len(gatewaySuffix) > 0 {
+		gatewayURL += gatewaySuffix[0]
+	}
 	client := NewClient(Config{
-		GatewayURL: server.URL,
+		GatewayURL: gatewayURL,
 		AppID:      "app-1",
 		SerialNo:   "serial-1",
 		MerchantID: "merchant-1",