package runtimeinfo

import (
	"runtime/debug"
	"testing"
)

var performanceVersionSink string

func BenchmarkPerformanceVersion(b *testing.B) {
	b.Run("Injected", func(b *testing.B) {
		b.ReportAllocs()
		b.ResetTimer()
		for i := 0; i < b.N; i++ {
			performanceVersionSink = version("v1.2.3", debug.ReadBuildInfo)
			if performanceVersionSink != "v1.2.3" {
				b.Fatalf("version() = %q, want injected version", performanceVersionSink)
			}
		}
	})
	b.Run("RealMetadataFallback", func(b *testing.B) {
		b.ReportAllocs()
		b.ResetTimer()
		for i := 0; i < b.N; i++ {
			performanceVersionSink = Version()
			if performanceVersionSink == "" {
				b.Fatal("Version() returned an empty version")
			}
		}
	})
}