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path: root/internal/caldata/of_test.go
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package caldata

import (
	"strings"
	"testing"
	"time"

	"github.com/lukaszkasprzak/lectio/internal/calendar"
)

func TestOFReadingsByCycle(t *testing.T) {
	// A synthetic OF day keyed christ-the-king-A must resolve to Matt 25.
	day := calendar.LiturgicalDay{
		Observed:    calendar.Celebration{Slug: "christ-the-king", Layer: "temporal"},
		SundayCycle: "A",
		Weekday:     time.Sunday,
	}
	sel := calendar.Selection{Form: "new"}
	rs := Readings(sel, nil, time.Date(2026, 11, 22, 0, 0, 0, 0, time.UTC), day)
	var gospel string
	for _, r := range rs {
		if r.Part == "gospel" {
			gospel = r.Citation
		}
	}
	// The gospel of Christ the King (cycle A) is Matthew 25:31-46. The citation
	// may spell Matthew as "Mat" (niedziela/ToEnglishRef) or "Matt" (seed); both
	// resolve to Matthew via books.ini.
	if !strings.HasPrefix(gospel, "Mat 25") && !strings.HasPrefix(gospel, "Matt 25") {
		t.Fatalf("christ-the-king-A gospel = %q, want Matthew 25…", gospel)
	}
}

func TestOFWeekdayEmpty(t *testing.T) {
	day := calendar.LiturgicalDay{
		Observed: calendar.Celebration{Slug: "ordinary-weekday", Layer: "temporal"},
		Weekday:  time.Wednesday, // no SundayCycle key -> deferred phase -> empty
	}
	if rs := Readings(calendar.Selection{Form: "new"}, nil, time.Now().UTC(), day); len(rs) != 0 {
		t.Fatalf("weekday should be empty, got %v", rs)
	}
}