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: singleton_test.go
    path of file: ./repos/jupiter/pkg/core/singleton
    
    the code of the file until where you have to start completion: package singleton

import (
	"reflect"
	"testing"

	"github.com/douyu/jupiter/pkg/core/constant"
)

func TestStore(t *testing.T) {
	
    
func Test_genkey(t *testing.T) {
	type args struct {
		module constant.Module
		key    string
	}
	tests := []struct {
		name string
		args args
		want string
	}{
		{
			name: "test1",
			args: args{
				module: constant.ModuleClientEtcd,
				key:    "key",
			},
			want: "5key",
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := genkey(tt.args.module, tt.args.key); got != tt.want {
				t.Errorf("genkey() = %v, want %v", got, tt.want)
			}
		})
	}
}