refactor(payment): 支付插件 - 宿主仅通过 RPC 包加载并保护订单版本

backend/internal/payment/rpc_test.go

@@ -0,0 +1,29 @@
+package payment
+
+import (
+	"context"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestRPCProviderUsesPaymentV1Contract(t *testing.T) {
+	dir := t.TempDir()
+	entry := filepath.Join(dir, "provider")
+	program := "#!/bin/sh\nread request\nprintf '%s\\n' '{\"ok\":true,\"data\":{\"mode\":\"qr_code\",\"value\":\"https://pay.example/qr\"}}'\n"
+	if err := os.WriteFile(entry, []byte(program), 0o700); err != nil {
+		t.Fatal(err)
+	}
+	provider, err := NewRPCProvider(Descriptor{ID: "test-provider", PluginID: "test-plugin", CheckoutMode: "qr_code"}, dir, "backend/provider")
+	if err != nil {
+		t.Fatal(err)
+	}
+	provider.command = entry
+	checkout, err := provider.CreateOrder(context.Background(), Config{"merchantId": "m"}, CreateRequest{MerchantOrderNo: "order-1"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if checkout.Mode != "qr_code" || checkout.Value != "https://pay.example/qr" {
+		t.Fatalf("checkout = %#v", checkout)
+	}
+}