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: basic_hash.go
    path of file: ./repos/codis/extern/deprecated/redis-test
    
    the code of the file until where you have to start completion: // Copyright 2016 CodisLabs. All Rights Reserved.
// Licensed under the MIT (MIT-LICENSE.txt) license.

package main

import (
	"flag"
	"fmt"
	"time"
)

type BasicHashTestCase struct {
	proxy string
	nkeys int
}

func init() {
	testcase = &BasicHashTestCase{}
}

func (tc *BasicHashTestCase) init() {
	flag.StringVar(&tc.proxy, "proxy", "", "redis 
    
func (tc *BasicHashTestCase) main() {
	c := NewConn(tc.proxy)
	defer c.Close()
	r := &Rand{time.Now().UnixNano()}
	for i := 0; i < tc.nkeys; i++ {
		u := NewUnit(fmt.Sprintf("basic_hash_%d_%d", r.Next(), r.Next()))
		h, e := uint32(u.HashKey(c)), HashSlot(u.key)
		if h != e {
			Panic("checksum key = '%s': return = %d, expect = %d", u.key, h, e)
		}
		u.key = fmt.Sprintf("%d_{%s}_%d", r.Next(), u.key, r.Next())
		h = uint32(u.HashKey(c))
		if h != e {
			Panic("checksum key = '%s': return = %d, expect = %d", u.key, h, e)
		}
		ops.Incr()
	}
}