fix: 接通服务器V2排序链路

- 将排序参数从V2 Handler传递至Service与Repository

- 增加仓储分页排序与参数白名单测试

backend/controller/server_sort_test.go

@@ -1,27 +1,26 @@
 package controller
 
-import "testing"
+import (
+	"net/http/httptest"
+	"testing"
 
-// TestServerOrderClause 验证服务器排序字段仅使用后端白名单表达式。 // Logan.Li
-func TestServerOrderClause(t *testing.T) {
-	tests := []struct {
-		name      string
-		sortField string
-		order     string
-		want      string
-	}{
-		{name: "默认排序", want: "created_at DESC"},
-		{name: "主机名升序", sortField: "hostname", order: "asc", want: "LOWER(hostname) ASC, id ASC"},
-		{name: "主机名降序", sortField: "hostname", order: "desc", want: "LOWER(hostname) DESC, id DESC"},
-		{name: "非法方向回退升序", sortField: "hostname", order: "invalid", want: "LOWER(hostname) ASC, id ASC"},
-		{name: "非法字段回退默认", sortField: "hostname; DROP TABLE sys_servers", order: "asc", want: "created_at DESC"},
+	"ezops/model"
+
+	"github.com/gin-gonic/gin"
+)
+
+// TestServerPageQueryBinding 验证服务器列表能绑定排序查询参数。 // Logan.Li
+func TestServerPageQueryBinding(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	request := httptest.NewRequest("GET", "/servers?page=1&page_size=10&sort=hostname&order=asc", nil)
+	context, _ := gin.CreateTestContext(httptest.NewRecorder())
+	context.Request = request
+
+	var query model.PageQuery
+	if err := context.ShouldBindQuery(&query); err != nil {
+		t.Fatalf("ShouldBindQuery() error = %v", err)
 	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			if got := serverOrderClause(tt.sortField, tt.order); got != tt.want {
-				t.Fatalf("serverOrderClause(%q, %q) = %q, want %q", tt.sortField, tt.order, got, tt.want)
-			}
-		})
+	if query.Sort != "hostname" || query.Order != "asc" {
+		t.Fatalf("排序参数绑定结果为 sort=%q order=%q", query.Sort, query.Order)
 	}
 }