(* RG 91's Table of Precedence, transcribed by Rite_ef.Precedence_ef.band. Table-driven, one row (hence one Alcotest.test_case) per RG 91 entry, so a misplaced or missing entry names itself in the failure output instead of failing anonymously (docs/research/rules-register.md ยง4). Each row's date is checked against the register to make sure it is not ALSO an instance of some other entry at the same band (the vacuous-test trap this project has caught before -- see the Advent-Ember-day note on entry 18 below). *) module P = Colitur_kernel.Precedence module Cel = Colitur_kernel.Celebration module S = Colitur_kernel.Slug module Col = Colitur_kernel.Colour module D = Colitur_kernel.Date module Sub = Colitur_kernel.Subject module Comp = Colitur_kernel.Computus module T = Rite_ef.Temporal_ef module V = Rite_ef.Vocab_ef module PE = Rite_ef.Precedence_ef let mk y m dd = match D.make ~year:y ~month:m ~day:dd with Ok t -> t | Error e -> failwith e (* [T.season] is the same function Calendar itself would use to build a context, so a row's [season]/[weekday] are exactly what the real engine would compute for that date, not a hand-picked value that might not actually occur together with it. *) let ctx date = { P.date; season = T.season date; weekday = D.weekday date } let cand ?(origin = P.Temporal) ?(rank = V.Class1) ?(subject = Sub.Temporal) ?(layer = "temporal") slug = { P.cel = Cel.make ~slug:(S.of_string_exn slug) ~rank ~colour:Col.White ~subject ~layer (); origin } (* Every Easter-relative date below is anchored to this single computed Easter rather than a hand-typed calendar date, so an arithmetic slip in a test date cannot silently pass by accident. *) let easter = Comp.gregorian_easter 2026 let off n = D.add_days easter n (* (description, date, candidate, expected RG 91 entry). *) let cases = [ (* Entry 1 -- register line 327: Nativity, Easter Sunday, Pentecost Sunday. *) ("1 Nativity", mk 2026 12 25, cand "ef-nativity", 1); ("1 Easter Sunday", off 0, cand "ef-easter-sunday", 1); ("1 Pentecost Sunday", off 49, cand "ef-pentecost", 1); (* Entry 2 -- register line 328: Sacred Triduum. Thu-Sat of Holy Week, NOT entry 7 (which stops at Wednesday -- see entry 7 below). *) ("2 Holy Thursday", off (-3), cand "ef-holy-thursday", 2); ("2 Good Friday", off (-2), cand "ef-good-friday", 2); ("2 Holy Saturday", off (-1), cand "ef-holy-saturday", 2); (* Entry 3 -- register line 329. *) ("3 Epiphany", mk 2026 1 6, cand "ef-epiphany", 3); ("3 Ascension", off 39, cand "ef-ascension", 3); ("3 Trinity", off 56, cand "ef-trinity", 3); ("3 Corpus Christi", off 60, cand "ef-corpus-christi", 3); ("3 Sacred Heart", off 68, cand "ef-sacred-heart", 3); ("3 Christ the King", T.christ_the_king 2026, cand "ef-christ-the-king", 3); (* Entry 4 -- register line 330. Sanctoral-origin: neither feast is part of temporal_ef's movable cycle. *) ( "4 Immaculate Conception", mk 2026 12 8, cand ~origin:P.Sanctoral ~subject:Sub.Bvm ~layer:PE.universal_layer "ef-immaculate-conception", 4 ); ("4 Assumption", mk 2026 8 15, cand ~origin:P.Sanctoral ~subject:Sub.Bvm ~layer:PE.universal_layer "ef-assumption", 4); (* Entry 5 -- register line 331. *) ("5 Nativity Vigil", mk 2026 12 24, cand "ef-nativity-vigil", 5); ("5 Octave day (Circumcision)", mk 2026 1 1, cand "ef-circumcision", 5); (* Entry 6 -- register line 332. *) ("6 Advent Sunday", T.advent_start 2026, cand "ef-advent-sunday-1", 6); ("6 Lent Sunday", off (-42), cand "ef-lent-sunday-1", 6); ("6 Passion Sunday (I Passiontide)", off (-14), cand "ef-passion-sunday", 6); ("6 Palm Sunday (II Passiontide)", off (-7), cand "ef-palm-sunday", 6); ("6 Low Sunday", off 7, cand "ef-low-sunday", 6); (* Entry 7 -- register line 333: Ash Wednesday and Mon/Tue/Wed of Holy Week ONLY -- Thu-Sat are entry 2 above, not this entry. *) ("7 Ash Wednesday", off (-46), cand "ef-ash-wednesday", 7); ("7 Monday of Holy Week", off (-6), cand "ef-holy-monday", 7); ("7 Tuesday of Holy Week", off (-5), cand "ef-holy-tuesday", 7); ("7 Wednesday of Holy Week", off (-4), cand "ef-holy-wednesday", 7); (* Entry 8 -- register line 334. *) ("8 All Souls", mk 2026 11 2, cand ~origin:P.Sanctoral ~layer:PE.universal_layer "ef-all-souls", 8); (* Entry 9 -- register line 335. *) ("9 Pentecost Vigil", off 48, cand "ef-pentecost-vigil", 9); (* Entry 10 -- register line 336: both range boundaries, to guard the off-by-one an inclusive Easter-offset window invites. *) ("10 Easter octave, day+1", off 1, cand "ef-easter-1-mon", 10); ("10 Easter octave, day+6", off 6, cand "ef-easter-1-sat", 10); ("10 Pentecost octave, day+50", off 50, cand "ef-pentecost-1-mon", 10); ("10 Pentecost octave, day+55", off 55, cand "ef-pentecost-1-sat", 10); (* Entry 11 -- register line 337. *) ( "11 Universal I-class feast", mk 2026 6 29, cand ~origin:P.Sanctoral ~subject:Sub.Saint ~layer:PE.universal_layer "ef-ss-peter-paul", 11 ); (* Entry 12 -- register line 338. The one non-base-layer case the brief asks for explicitly: same date/rank/subject as 11, only the layer differs, so this row isolates the layer test as the deciding factor. *) ( "12 Proper I-class feast (non-base layer)", mk 2026 6 29, cand ~origin:P.Sanctoral ~subject:Sub.Saint ~layer:"diocese-warsaw" "ef-local-patron", 12 ); (* Entry 13 -- register line 339. *) ( "13 Indult I-class feast", mk 2026 6 29, cand ~origin:P.Sanctoral ~subject:Sub.Saint ~layer:(PE.indult_prefix ^ "local-grant") "ef-indult-feast-1", 13 ); (* Entry 14 -- register line 341. *) ( "14 Feast of the Lord, II class", mk 2026 7 1, cand ~origin:P.Sanctoral ~rank:V.Class2 ~subject:Sub.Lord ~layer:PE.universal_layer "ef-precious-blood", 14 ); (* Entry 15 -- register line 342: an ordinary Sunday not named at entry 6 -- Septuagesima is II class (RG 11-12 names only Advent/Lent/ Passiontide/Easter/Low/Pentecost as I class). *) ("15 II-class Sunday (Septuagesima)", off (-63), cand ~rank:V.Class2 "ef-septuagesima-sunday", 15); (* Entry 16 -- register line 342. *) ( "16 Universal II-class feast, not of the Lord", mk 2026 1 20, cand ~origin:P.Sanctoral ~rank:V.Class2 ~subject:Sub.Saint ~layer:PE.universal_layer "ef-some-saint", 16 ); (* Entry 17 -- register line 343: days WITHIN the Nativity octave (26-28 Dec are Stephen/John/Innocents -- sanctoral, not this entry; 1 Jan is entry 5's Octave DAY, not this entry either). *) ("17 Nativity octave, 29 Dec", mk 2026 12 29, cand ~rank:V.Class2 "ef-nativity-octave-day-5", 17); ("17 Nativity octave, 31 Dec", mk 2026 12 31, cand ~rank:V.Class2 "ef-nativity-octave-day-7", 17); (* Entry 18 -- register line 343-344: Advent 17-23 Dec ferias AND the Ember days of Advent/Lent/September share this one entry. The second row is deliberately a Lent date (season Lent, NOT Advent) to prove the Ember-slug path fires on its own, not merely because it also happens to fall in the Dec 17-23 window -- the exact trap the brief warns about, worked the other way round: this Ember day must NOT be mistaken for an ordinary entry-22 Lent feria either. *) ("18 Advent 17-23 Dec feria", mk 2026 12 21, cand ~rank:V.Class2 "ef-advent-4-mon", 18); ("18 Lent Ember Wednesday", off (-39), cand ~rank:V.Class2 "ef-lent-ember-wed", 18); (* Entry 19 -- register line 344. *) ( "19 Proper II-class feast", mk 2026 1 20, cand ~origin:P.Sanctoral ~rank:V.Class2 ~subject:Sub.Saint ~layer:"diocese-warsaw" "ef-local-saint-2", 19 ); (* Entry 20 -- register line 345. *) ( "20 Indult II-class feast", mk 2026 1 20, cand ~origin:P.Sanctoral ~rank:V.Class2 ~subject:Sub.Saint ~layer:(PE.indult_prefix ^ "local-grant-2") "ef-indult-feast-2", 20 ); (* Entry 21 -- register line 345 (RG 28-34). Two rows: the Ascension Vigil is the one II-class vigil temporal_ef already produces today (temporal-origin); the Assumption Vigil stands in for the sanctoral-origin case no task has loaded data for yet -- proving [band] does not gate this entry on [origin] (see precedence_ef.ml's file comment). *) ("21 Ascension Vigil (temporal-origin)", off 38, cand ~rank:V.Class2 "ef-ascension-vigil", 21); ( "21 Assumption Vigil (sanctoral-origin)", mk 2026 8 14, cand ~origin:P.Sanctoral ~rank:V.Class2 ~layer:PE.universal_layer "ef-assumption-vigil", 21 ); (* Entry 22 -- register line 347-348 (corrected: ends at Palm Sunday, not Passion Sunday). Both a Lent and a Passiontide feria, clear of Ash Wednesday, Holy Week and the Ember days. *) ("22 Lent feria", off (-41), cand ~rank:V.Class3 "ef-lent-1-mon", 22); ("22 Passiontide feria", off (-12), cand ~rank:V.Class3 "ef-passiontide-1-tue", 22); (* Entry 23 -- register line 349. NOTE the table's own order here is the REVERSE of 11/12 and 14/16/19/20 above: entry 23 (particular calendars) is numbered BELOW entry 24 (universal), so a proper III-class feast outranks a universal one -- transcribed as the register states it, not "corrected" to match the other classes. *) ( "23 Proper III-class feast (non-base layer)", mk 2026 6 30, cand ~origin:P.Sanctoral ~rank:V.Class3 ~layer:"diocese-warsaw" "ef-local-saint-3", 23 ); (* Entry 24 -- register line 349. *) ( "24 Universal III-class feast", mk 2026 6 30, cand ~origin:P.Sanctoral ~rank:V.Class3 ~layer:PE.universal_layer "ef-some-saint-3", 24 ); (* Entry 25 -- register line 350. *) ("25 Advent feria to 16 Dec", mk 2026 12 1, cand ~rank:V.Class3 "ef-advent-1-tue", 25); (* Entry 26 -- register line 350. *) ( "26 III-class vigil", mk 2026 8 9, cand ~origin:P.Sanctoral ~rank:V.Class3 ~layer:PE.universal_layer "ef-lawrence-vigil", 26 ); (* Entry 27 -- register line 352: an otherwise-unoccupied IV-class Saturday. *) ( "27 Office of the BVM on Saturday", off 62, cand ~rank:V.Class4 "ef-time-after-pentecost-1-sat", 27 ); (* Entry 28 -- register line 352: the unqualified IV-class catch-all. *) ("28 IV-class feria", off 65, cand ~rank:V.Class4 "ef-time-after-pentecost-1-tue", 28); (* Not an RG 91 row at all: a I-class candidate marked as a vigil, which is not the Nativity or Pentecost (entries 5/9, the only I-class vigils the table names) and so has no entry to fall into. Proves the documented fallback -- not entry 11/12/13, which the [not is_vigil] guard exists specifically to keep this out of. *) ( "unclassified: I-class vigil outside Nativity/Pentecost", mk 2026 3 10, cand ~origin:P.Sanctoral ~layer:PE.universal_layer "ef-mystery-vigil", PE.unclassified ); (* RG 91's own vigil list (register lines 381-384) stops at III class -- there is no IV-class vigil for entry 28's ferial catch-all to absorb. *) ( "unclassified: IV-class candidate marked as a vigil", mk 2026 6 20, cand ~rank:V.Class4 "ef-second-mystery-vigil", PE.unclassified ) ] let suite = ( "Precedence_ef", List.map (fun (desc, date, c, expect) -> Alcotest.test_case desc `Quick (fun () -> Alcotest.(check int) desc expect (PE.band (ctx date) c))) cases )