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-rw-r--r--test/test_golden.ml71
1 files changed, 70 insertions, 1 deletions
diff --git a/test/test_golden.ml b/test/test_golden.ml
index ba25d8a..d680720 100644
--- a/test/test_golden.ml
+++ b/test/test_golden.ml
@@ -1315,6 +1315,67 @@ let test_rogation_wednesday_yields_to_a_feast_2026 () =
"2026-05-13 wednesday season=paschaltide week=6 slug=ef-ascension-vigil rank=class-2 colour=white \
subject=temporal name_la=- comms=[robert-bellarmine:ordinary] in=- out=[]"
+(* ---- The bissextile (leap-year) calendarium footnote, bissextile-shift
+ task, 2026-08-22 ----
+
+ The Missale Romanum's own CALENDARIUM table, February, footnote
+ (docs/research/LT.txt:5011-5014, scan-corroborated docs/research/
+ scan2.txt:3050-3058): "In anno bissextili mensis februarius est dierum
+ 29, et festum S. Matthiae celebratur die 25 februarii, ac festum S.
+ Gabrielis a Virgine perdolente 28 februarii, et bis dicitur sexto
+ calendas, id est die 24 et die 25" -- in a leap year the sixth kalends
+ of March (24 February) is doubled rather than a 29th day appended, so
+ St Matthias (ordinarily 24 February) is kept on 25 February and St
+ Gabriel of Our Lady of Sorrows (ordinarily 27 February) on 28 February;
+ 24 February itself carries no fixed office that year.
+ {!Rite_ef.Temporal_ef.bissextile_fixed_key} implements this as the
+ rubric's own general MECHANISM, so a leap year moves the VACATED date's
+ slug/rank/colour away and the OCCUPIED date's toward it -- both sides
+ pinned for each saint, plus one common-year control apiece proving the
+ identity default is unchanged where the footnote does not apply. *)
+
+(* Matthias, 2044 (leap): 24 February carries no fixed office at all
+ (Class4 temporal only, zero commemorations); Matthias (Class2, an
+ Apostle) wins 25 February outright against that day's own Class4
+ feria. *)
+let test_bissextile_matthias_leap_2044 () =
+ check ~msg:"leap year: 24 February carries no fixed office, Matthias has moved away" 2044 2 24
+ "2044-02-24 wednesday season=septuagesima week=2 slug=ef-septuagesima-2-wednesday rank=class-4 colour=violet \
+ subject=temporal name_la=- comms=[] in=- out=[]";
+ check ~msg:"leap year: Matthias observed outright on 25 February, not 24" 2044 2 25
+ "2044-02-25 thursday season=septuagesima week=2 slug=matthias rank=class-2 colour=red subject=saint name_la=- \
+ comms=[] in=- out=[]"
+
+(* Matthias, 2025 (common): unaffected control -- the identity default
+ applies, Matthias stays at his ordinary 24 February. *)
+let test_bissextile_matthias_common_2025 () =
+ check ~msg:"common year: Matthias unaffected, still 24 February" 2025 2 24
+ "2025-02-24 monday season=septuagesima week=2 slug=matthias rank=class-2 colour=red subject=saint name_la=- \
+ comms=[] in=- out=[]"
+
+(* Gabriel of Our Lady of Sorrows, 2008 (leap): 27 February carries no
+ trace of him at all (not even a commemoration -- fixed_key removes him
+ from the candidate set entirely, RG 111's admission machinery never
+ sees him); on 28 February he is admitted as an ORDINARY commemoration
+ (Class3 ties the day's own privileged Lenten feria, which keeps
+ observed). A different shape from Matthias's outright win above,
+ deliberately pinned: the mechanism moves WHERE the saint is tried, not
+ whether he wins once he gets there. *)
+let test_bissextile_gabriel_leap_2008 () =
+ check ~msg:"leap year: 27 February carries no trace of Gabriel, he has moved away" 2008 2 27
+ "2008-02-27 wednesday season=lent week=3 slug=ef-lent-3-wednesday rank=class-3 colour=violet subject=temporal \
+ name_la=- comms=[] in=- out=[]";
+ check ~msg:"leap year: Gabriel admitted as an ordinary commemoration on 28 February, not 27" 2008 2 28
+ "2008-02-28 thursday season=lent week=3 slug=ef-lent-3-thursday rank=class-3 colour=violet subject=temporal \
+ name_la=- comms=[gabriel-of-our-lady-of-sorrows:ordinary] in=- out=[]"
+
+(* Gabriel of Our Lady of Sorrows, 2025 (common): unaffected control --
+ observed outright at his ordinary 27 February. *)
+let test_bissextile_gabriel_common_2025 () =
+ check ~msg:"common year: Gabriel unaffected, still observed on 27 February" 2025 2 27
+ "2025-02-27 thursday season=septuagesima week=2 slug=gabriel-of-our-lady-of-sorrows rank=class-3 colour=white \
+ subject=saint name_la=- comms=[] in=- out=[]"
+
(* RG 128, transcribed in docs/research/rules-register.md ยง3b: violet is used
for "II/III-class vigils outside Paschaltide". Two of colitur's five vigils
disagreed with that rule until the ef-oconnell-rubrics branch -- the
@@ -1510,5 +1571,13 @@ let suite =
Alcotest.test_case "RG87: Rogation Wednesday admitted (2024)" `Quick
test_rogation_wednesday_admitted_2024;
Alcotest.test_case "RG87/113: Rogation Wednesday yields to an impeded feast (2026)" `Quick
- test_rogation_wednesday_yields_to_a_feast_2026
+ test_rogation_wednesday_yields_to_a_feast_2026;
+ Alcotest.test_case "bissextile footnote: Matthias moves 24->25 February (leap, 2044)" `Quick
+ test_bissextile_matthias_leap_2044;
+ Alcotest.test_case "bissextile footnote: Matthias unaffected (common, 2025)" `Quick
+ test_bissextile_matthias_common_2025;
+ Alcotest.test_case "bissextile footnote: Gabriel of Our Lady of Sorrows moves 27->28 February (leap, 2008)"
+ `Quick test_bissextile_gabriel_leap_2008;
+ Alcotest.test_case "bissextile footnote: Gabriel of Our Lady of Sorrows unaffected (common, 2025)" `Quick
+ test_bissextile_gabriel_common_2025
] )