Benchmarking two unique ways to get a filename without the extension in Go

main_test.go

package main

import (
	"testing"
)

var res string

func BenchmarkFileNameWithoutExtSliceNotation(b *testing.B) {
	// run the Fib function b.N times
	var r string
	for n := 0; n < b.N; n++ {
		r = fileNameWithoutExtSliceNotation("2020-10-06_19-09.png")
	}

	res = r
}

func BenchmarkFileNameWithoutExtTrimSuffix(b *testing.B) {
	// run the Fib function b.N times
	var r string
	for n := 0; n < b.N; n++ {
		r = fileNameWithoutExtTrimSuffix("2020-10-06_19-09.png")
	}

	res = r
}