package router

import (
	"testing"
	"time"
)

func TestCalendarEventFormatter(t *testing.T) {
	f := CalendarEventFormatter{}
	date := time.Date(2026, 7, 6, 0, 0, 0, 0, time.UTC)

	// Empty
	if got := f.Format(nil, date); got != "на 06.07.2026 ничего нет." {
		t.Errorf("empty: got %q", got)
	}

	// One event
	if got := f.Format([]string{"Standup @ 10:00-10:30"}, date); got != "на 06.07.2026: Standup @ 10:00-10:30" {
		t.Errorf("one: got %q", got)
	}

	// Multiple events
	if got := f.Format([]string{"Standup @ 10:00-10:30", "Lunch @ 12:00-13:00"}, date); got != "на 06.07.2026: Standup @ 10:00-10:30; Lunch @ 12:00-13:00" {
		t.Errorf("multiple: got %q", got)
	}
}