package shortrecommend

import (
	"testing"
	"time"
)

func TestBuildQueueVersionIsUniqueWithinSameDay(t *testing.T) {
	now := time.Date(2026, 7, 31, 2, 0, 0, 0, time.UTC)
	first := buildQueueVersion(now, "build-a")
	second := buildQueueVersion(now, "build-b")
	if first != "20260731-build-a" || second != "20260731-build-b" {
		t.Fatalf("versions = %q, %q", first, second)
	}
	if first == second {
		t.Fatal("same-day rebuilds must not reuse a queue version")
	}
}