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: interface_test.go
    path of file: ./repos/rust-brotli/c/go/brotli
    
    the code of the file until where you have to start completion: package brotli

import (
	"bytes"
	"fmt"
	"io"
	"io/ioutil"
	"testing"
)

var options = Compressi
    
func TestCompressRoundtripZero(*testing.T) {
	var data []byte
	outBuffer := bytes.NewBuffer(nil)
	var options = CompressionOptions{
		NumThreads: 1,
		Quality:    9,
		Catable:    true,
		Appendable: true,
		Magic:      true,
	}
	compressedForm := bytes.NewBuffer(nil)
	writer := NewMultiCompressionWriter(
		io.MultiWriter(compressedForm, NewDecompressionWriter(
			outBuffer,
		),
		),
		options,
	)
	err := writer.Close()
	if err != nil {
		panic(err)
	}
	if len(compressedForm.Bytes()) == 0 {
		panic("Zero output buffer")
	}
	if !bytes.Equal(outBuffer.Bytes(), data[:]) {
		panic(fmt.Sprintf("Bytes not equal %d, %d", len(outBuffer.Bytes()), len(data)))
	}
}