diff options
Diffstat (limited to 'internal/calendar/temporal_ef_test.go')
| -rw-r--r-- | internal/calendar/temporal_ef_test.go | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/internal/calendar/temporal_ef_test.go b/internal/calendar/temporal_ef_test.go index a7fa8b0..1290a59 100644 --- a/internal/calendar/temporal_ef_test.go +++ b/internal/calendar/temporal_ef_test.go @@ -1,6 +1,7 @@ package calendar import ( + "strings" "testing" "time" ) @@ -256,3 +257,46 @@ func TestTemporalEFEpiphanyWeekAnchor(t *testing.T) { y, anchor.Format("2006-01-02"), got) } } + +// TestTemporalEFBVMSaturday pins RG 78, the votive Office of Our Lady on +// Saturday: "In sabbatis, in quibus occurrit Officium de feria IV classis, fit +// de sancta Maria in sabbato." A Saturday whose office would otherwise be a +// IV-class feria keeps Our Lady's office instead, and it is white. +// +// Two things are asserted in opposite directions on purpose. The office +// applies only where the feria really is IV class, so a Saturday in Lent or +// Advent -- III class ferias, violet -- must NOT turn white; and the slug must +// NOT change, because the day's readings are still the feria's and a bespoke +// slug would recur many times a year. +func TestTemporalEFBVMSaturday(t *testing.T) { + // Ordinary per-annum Saturdays: IV class, so Our Lady's office, white. + for _, day := range []string{"2026-06-20", "2026-06-27", "2026-07-04", "2026-10-31"} { + got := temporalEF(d(day)) + if got.Cel.Colour != White { + t.Errorf("%s: colour = %s, want white (RG 78, Our Lady on Saturday)", day, got.Cel.Colour) + } + if got.Cel.Rank != RankClass4 { + t.Errorf("%s: rank = %v, want class-4 -- the office does not change the rank", day, got.Cel.Rank) + } + if !strings.HasPrefix(got.Cel.Slug, "ef-time-after-pentecost-") { + t.Errorf("%s: slug = %q, want the ferial slug unchanged -- the readings are "+ + "still the feria's and a bespoke slug would recur many times a year", day, got.Cel.Slug) + } + } + // Saturdays whose feria is NOT IV class keep their own colour. Lent and + // Advent ferias are III class and violet; a fix that whitened every + // Saturday would fail here. + for _, c := range []struct { + day string + colour Colour + }{ + {"2026-03-07", Violet}, // Saturday in Lent + {"2026-12-05", Violet}, // Saturday in Advent + {"2026-04-04", Violet}, // Holy Saturday -- I class, privileged + } { + if got := temporalEF(d(c.day)).Cel.Colour; got != c.colour { + t.Errorf("%s: colour = %s, want %s -- RG 78 applies only where the feria is IV class", + c.day, got, c.colour) + } + } +} |