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: http_assertions.go
    path of file: ./repos/goqu/vendor/github.com/stretchr/testify/assert
    
    the code of the file until where you have to start completion: package assert

import (
	"fmt"
	"net/http"
	"net/http/httptest"
	"net/url"
	"strings"
)

// httpCode is a helper that returns HTTP code of the response. It re
    
func HTTPSuccess(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, msgAndArgs ...interface{}) bool {
	if h, ok := t.(tHelper); ok {
		h.Helper()
	}
	code, err := httpCode(handler, method, url, values)
	if err != nil {
		Fail(t, fmt.Sprintf("Failed to build test request, got error: %s", err))
	}

	isSuccessCode := code >= http.StatusOK && code <= http.StatusPartialContent
	if !isSuccessCode {
		Fail(t, fmt.Sprintf("Expected HTTP success status code for %q but received %d", url+"?"+values.Encode(), code))
	}

	return isSuccessCode
}