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: config_test.go
    path of file: ./repos/v2ray-core/proxy/blackhole
    
    the code of the file until where you have to start completion: package blackhole_test

import (
	"buf
    
func TestHTTPResponse(t *testing.T) {
	buffer := buf.New()

	httpResponse := new(HTTPResponse)
	httpResponse.WriteTo(buf.NewWriter(buffer))

	reader := bufio.NewReader(buffer)
	response, err := http.ReadResponse(reader, nil)
	common.Must(err)
	if response.StatusCode != 403 {
		t.Error("expected status code 403, but got ", response.StatusCode)
	}
}