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: bench_test.go
    path of file: ./repos/gitkube/vendor/github.com/pkg/errors
    
    the code of the file until where you have to start completion: // +build go1.7

package errors

import (
	"fmt"
	"testing"

	stderrors "errors"
)

func noErrors(at, depth int) error {
	if at >= depth {
		return stderrors.New("no error")
	}
	return noErrors(at+1, depth)
}
func yesErrors(at, depth int) error {
	if at >= depth {
		return New("ye error")
	}
	return yesErrors(at+1, depth)
}

func BenchmarkErrors(b *
    
func BenchmarkErrors(b *testing.B) {
	var toperr error
	type run struct {
		stack int
		std   bool
	}
	runs := []run{
		{10, false},
		{10, true},
		{100, false},
		{100, true},
		{1000, false},
		{1000, true},
	}
	for _, r := range runs {
		part := "pkg/errors"
		if r.std {
			part = "errors"
		}
		name := fmt.Sprintf("%s-stack-%d", part, r.stack)
		b.Run(name, func(b *testing.B) {
			var err error
			f := yesErrors
			if r.std {
				f = noErrors
			}
			b.ReportAllocs()
			for i := 0; i < b.N; i++ {
				err = f(0, r.stack)
			}
			b.StopTimer()
			toperr = err
		})
	}
}