package router

import (
	"reflect"
	"testing"
)

// TestParseTrustedProxies 覆盖：合法 CIDR/IP/localhost、空白容忍、空项、非法条目跳过
func TestParseTrustedProxies(t *testing.T) {
	cases := []struct {
		name string
		in   string
		want []string
	}{
		{"未配置", "", nil},
		{"单个网段", "172.19.0.0/16", []string{"172.19.0.0/16"}},
		// 真实事故：尾随空格曾导致 invalid CIDR 整进程退出
		{"尾随空格", "172.19.0.0/16 ", []string{"172.19.0.0/16"}},
		{"两侧空白与空项", " 172.19.0.0/16 , 10.0.0.5 ,", []string{"172.19.0.0/16", "10.0.0.5"}},
		{"单个 IP", "10.0.0.5", []string{"10.0.0.5"}},
		{"localhost", "localhost", []string{"localhost"}},
		{"非法条目跳过", "172.19.0.0/16,bad-cidr", []string{"172.19.0.0/16"}},
		{"全部非法", "bad,,worse", nil},
	}
	for _, c := range cases {
		t.Run(c.name, func(t *testing.T) {
			got := parseTrustedProxies(c.in)
			if !reflect.DeepEqual(got, c.want) {
				t.Errorf("parseTrustedProxies(%q) = %v, want %v", c.in, got, c.want)
			}
		})
	}
}