增加气站合同附件受控上传与预览

backend/api/internal/routers/gas_test.go

@@ -100,3 +100,23 @@ func TestGasAvatarRoutes(t *testing.T) {
 		}
 	}
 }
+
+// TestGasContractAttachmentRoutes 验证合同附件通过气站鉴权域提供专用接口。
+func TestGasContractAttachmentRoutes(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	engine := gin.New()
+	RegisterGas("heqi", engine)
+	routes := map[string]bool{}
+	for _, route := range engine.Routes() {
+		routes[route.Method+" "+route.Path] = true
+	}
+	for _, path := range []string{
+		"POST /heqi/gas/v1/gasorder_contract/attachment/upload",
+		"POST /heqi/gas/v1/gasorder_contract/attachment/cleanup",
+		"GET /heqi/gas/v1/gasorder_contract/:identity/attachment",
+	} {
+		if !routes[path] {
+			t.Fatalf("missing gas contract attachment route %s", path)
+		}
+	}
+}