benchmarking function usage in govaluate and goja

bench_test.go

package benchmarks

import (
	"encoding/base64"
	"fmt"
	"testing"

	"github.com/Knetic/govaluate"
	"github.com/dop251/goja"
	"github.com/stretchr/testify/require"
)

func BenchmarkGoValuateNCompile(b *testing.B) {
	base64Func := func(args ...interface{}) (interface{}, error) {
		return base64.StdEncoding.EncodeToString([]byte(fmt.Sprint(args[0]))), nil
	}
	funcMap := map[string]govaluate.ExpressionFunction{
		"base64": base64Func,
	}
	for i := 0; i < b.N; i++ {
		compiled, err := govaluate.NewEvaluableExpressionWithFunctions(`base64("test@scanme.sh")`, funcMap)
		require.Nil(b, err)
		_, _ = compiled.Evaluate(map[string]interface{}{})
	}
}

func BenchmarkGojaWithCompile(b *testing.B) {
	vm := goja.New()

	b64Func := func(call goja.FunctionCall) goja.Value {
		res := base64.StdEncoding.EncodeToString([]byte(call.Argument(0).String()))
		return vm.ToValue(res)
	}
	vm.Set("base64", b64Func)

	script := `base64("test@scanme.sh")`

	for i := 0; i < b.N; i++ {
		_, err := vm.RunString(script)
		require.Nil(b, err)
	}
}

Result

go test -bench=. -benchtime=10s -benchmem
goos: darwin
goarch: arm64
pkg: github.com/tarunKoyalwar/benchMarks
BenchmarkGoValuateNCompile-8   	 3675090	      3274 ns/op	    2760 B/op	      73 allocs/op
BenchmarkGojaWithCompile-8     	 6726903	      1789 ns/op	    1560 B/op	      35 allocs/op
PASS
ok  	github.com/tarunKoyalwar/benchMarks	29.551s