You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: cidr_test.go
    path of file: ./repos/vault/sdk/helper/cidrutil
    
    the code of the file until where you have to start completion: // Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0

package cidrutil

import (
	"testing"

	sockaddr "github.com/hashicorp/go-sockaddr"
)

func TestCIDRUtil_IPBelongsToCIDR(t *testing.T) {
	ip := "192.168.25.30"
	cidr := "192.168.26.30/16"

	belongs, err := IPBelongsToCIDR(ip, cidr)
	if err != nil
    
func TestCIDRUtil_Subset(t *testing.T) {
	cidr1 := "192.168.27.29/24"
	cidr2 := "192.168.27.29/24"
	subset, err := Subset(cidr1, cidr2)
	if err != nil {
		t.Fatal(err)
	}
	if !subset {
		t.Fatalf("expected CIDR %q to be a subset of CIDR %q", cidr2, cidr1)
	}

	cidr1 = "192.168.27.29/16"
	cidr2 = "192.168.27.29/24"
	subset, err = Subset(cidr1, cidr2)
	if err != nil {
		t.Fatal(err)
	}
	if !subset {
		t.Fatalf("expected CIDR %q to be a subset of CIDR %q", cidr2, cidr1)
	}

	cidr1 = "192.168.27.29/24"
	cidr2 = "192.168.27.29/16"
	subset, err = Subset(cidr1, cidr2)
	if err != nil {
		t.Fatal(err)
	}
	if subset {
		t.Fatalf("expected CIDR %q to not be a subset of CIDR %q", cidr2, cidr1)
	}

	cidr1 = "192.168.0.128/25"
	cidr2 = "192.168.0.0/24"
	subset, err = Subset(cidr1, cidr2)
	if err != nil {
		t.Fatal(err)
	}
	if subset {
		t.Fatalf("expected CIDR %q to not be a subset of CIDR %q", cidr2, cidr1)
	}
	subset, err = Subset(cidr2, cidr1)
	if err != nil {
		t.Fatal(err)
	}
	if !subset {
		t.Fatalf("expected CIDR %q to be a subset of CIDR %q", cidr1, cidr2)
	}
}