package growthreport

import (
	"testing"
	"time"
)

func TestRequestHashIsStableAndScopeSensitive(t *testing.T) {
	t.Parallel()
	a := RequestHash(7, "T-1", false)
	if a != RequestHash(7, "T-1", false) {
		t.Fatal("RequestHash() is not stable")
	}
	if a == RequestHash(7, "T-2", false) || a == RequestHash(7, "T-1", true) {
		t.Fatal("RequestHash() ignored request scope")
	}
}

func TestNextTehranRefreshUsesCalendarBoundary(t *testing.T) {
	t.Parallel()
	now := time.Date(2026, 8, 21, 20, 0, 0, 0, time.UTC)
	next := NextTehranRefresh(now)
	location, _ := time.LoadLocation("Asia/Tehran")
	local := next.In(location)
	if local.Hour() != 0 || local.Minute() != 0 || !next.After(now) {
		t.Fatalf("NextTehranRefresh() = %s", next)
	}
}

func TestEstimatedTokenReservationCoversTwoTurnsAndGrowsWithEvidence(t *testing.T) {
	t.Parallel()
	small := EstimatedTokenReservation([]byte("{}"))
	large := EstimatedTokenReservation(make([]byte, 1000))
	if small < 3200 || large <= small || large != 5200 {
		t.Fatalf("reservations small=%d large=%d", small, large)
	}
}