package buildinfo

import (
	"testing"
	"time"
)

func TestVersionIsNonEmpty(t *testing.T) {
	if Version == "" {
		t.Fatal("version must not be empty")
	}
}

func TestBuiltAtRejectsPlaceholderAndNormalizesUTC(t *testing.T) {
	original := BuildTime
	t.Cleanup(func() { BuildTime = original })
	BuildTime = "unknown"
	if BuiltAt() != nil {
		t.Fatal("placeholder build time must be absent")
	}
	BuildTime = "2026-08-12T04:00:00+02:00"
	if got := BuiltAt(); got == nil || got.Format(time.RFC3339) != "2026-08-12T02:00:00Z" {
		t.Fatalf("built at = %v", got)
	}
}