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: syslogconf_test.go
    path of file: ./repos/vuls/config/syslog
    
    the code of the file until where you have to start completion: //go:build !windows

package syslog

import (
	"testing"
)

func TestSyslogConfValidate(t *testing.T) {
	var tests = []struct {
		conf              Conf
		expectedErrLength int
	}{
		{
			conf:              Conf{},
			expectedErrLength: 0,
		},
		{
			conf: Conf{
				Protocol: "tcp",
				Port:     "5140",
			},
			expecte
    
func TestSyslogConfValidate(t *testing.T) {
	var tests = []struct {
		conf              Conf
		expectedErrLength int
	}{
		{
			conf:              Conf{},
			expectedErrLength: 0,
		},
		{
			conf: Conf{
				Protocol: "tcp",
				Port:     "5140",
			},
			expectedErrLength: 0,
		},
		{
			conf: Conf{
				Protocol: "udp",
				Port:     "12345",
				Severity: "emerg",
				Facility: "user",
			},
			expectedErrLength: 0,
		},
		{
			conf: Conf{
				Protocol: "foo",
				Port:     "514",
			},
			expectedErrLength: 1,
		},
		{
			conf: Conf{
				Protocol: "invalid",
				Port:     "-1",
			},
			expectedErrLength: 2,
		},
		{
			conf: Conf{
				Protocol: "invalid",
				Port:     "invalid",
				Severity: "invalid",
				Facility: "invalid",
			},
			expectedErrLength: 4,
		},
	}

	for i, tt := range tests {
		tt.conf.Enabled = true
		errs := tt.conf.Validate()
		if len(errs) != tt.expectedErrLength {
			t.Errorf("test: %d, expected %d, actual %d", i, tt.expectedErrLength, len(errs))
		}
	}
}