From b4a2485afbf74e99e2147086fbca0568b7e2b7b8 Mon Sep 17 00:00:00 2001
From: Marcos Magueta <maguetamarcos@gmail.com>
Date: Sun, 12 Jul 2026 17:55:27 -0300
Subject: relation references as a term kind, written #Name

---
 test/test_branch.ml | 30 ++++++++++++++++++++++--------
 1 file changed, 22 insertions(+), 8 deletions(-)

(limited to 'test/test_branch.ml')

diff --git a/test/test_branch.ml b/test/test_branch.ml
index 2cfabdd..415e1c2 100644
--- a/test/test_branch.ml
+++ b/test/test_branch.ml
@@ -48,8 +48,8 @@ let test_transition_chain () =
   let world = world () in
   let source =
     Printf.sprintf
-      {| [Insert relation: "Person" tuple: {name: "Marcos" age: 30} before: %S after: S1] :and
-         [Insert relation: "Person" tuple: {name: "Ana" age: 12} before: S1 after: S2] :and
+      {| [Insert relation: #Person tuple: {name: "Marcos" age: 30} before: %S after: S1] :and
+         [Insert relation: #Person tuple: {name: "Ana" age: 12} before: S1 after: S2] :and
          [Person name: N age: A at: S2] |}
       (tip_digest world)
   in
@@ -59,7 +59,7 @@ let test_transition_chain () =
      visible at S1. *)
   let mid =
     Printf.sprintf
-      {| [Insert relation: "Person" tuple: {name: "Marcos" age: 30} before: %S after: S1] :and
+      {| [Insert relation: #Person tuple: {name: "Marcos" age: 30} before: %S after: S1] :and
          [Person name: N age: A at: S1] |}
       (tip_digest world)
   in
@@ -73,7 +73,7 @@ let test_tip_unmoved_until_commit () =
     solve world
       (compile
          (Printf.sprintf
-            {| [Insert relation: "Person" tuple: {name: "Rui" age: 70} before: %S after: S1] |}
+            {| [Insert relation: #Person tuple: {name: "Rui" age: 70} before: %S after: S1] |}
             before))
   in
   Alcotest.(check string) "solving commits nothing" before (tip_digest world)
@@ -85,7 +85,7 @@ let test_commit_and_conflict () =
     solve world
       (compile
          (Printf.sprintf
-            {| [Insert relation: "Person" tuple: {name: "Rui" age: 70} before: %S after: S1] |}
+            {| [Insert relation: #Person tuple: {name: "Rui" age: 70} before: %S after: S1] |}
             root))
   in
   let next =
@@ -110,7 +110,7 @@ let test_integrity_at_transition () =
   let world = world () in
   let source =
     Printf.sprintf
-      {| [Insert relation: "Person" tuple: {name: "Ghost" age: "old"} before: %S after: S1] |}
+      {| [Insert relation: #Person tuple: {name: "Ghost" age: "old"} before: %S after: S1] |}
       (tip_digest world)
   in
   Alcotest.(check int) "an ill-typed tuple is no transition" 0
@@ -120,13 +120,25 @@ let test_linearity_rejects_forks () =
   let world = world () in
   ignore world;
   let source =
-    {| [Insert relation: "Person" tuple: {name: "A" age: 1} before: S0 after: S1] :and
-       [Insert relation: "Person" tuple: {name: "B" age: 2} before: S0 after: S2] |}
+    {| [Insert relation: #Person tuple: {name: "A" age: 1} before: S0 after: S1] :and
+       [Insert relation: #Person tuple: {name: "B" age: 2} before: S0 after: S2] |}
   in
   match Sol.Branch.linear (compile source) with
   | Error _ -> ()
   | Ok () -> Alcotest.fail "a fork inside one expression must be rejected"
 
+let test_unknown_relation_is_no_transition () =
+  (* Decision 15: inserting into a relation absent from the catalog
+     is a dangling reference, and there is no such transition. *)
+  let world = world () in
+  let source =
+    Printf.sprintf
+      {| [Insert relation: #Ghost tuple: {name: "X" age: 1} before: %S after: S1] |}
+      (tip_digest world)
+  in
+  Alcotest.(check int) "dangling reference" 0
+    (List.length (solve world (compile source)))
+
 let test_reads_default_to_tip () =
   let world = world () in
   Alcotest.(check int) "the root tip has nobody" 0
@@ -145,6 +157,8 @@ let () =
             test_integrity_at_transition;
           Alcotest.test_case "linearity rejects forks" `Quick
             test_linearity_rejects_forks;
+          Alcotest.test_case "unknown relation is no transition" `Quick
+            test_unknown_relation_is_no_transition;
           Alcotest.test_case "reads default to tip" `Quick
             test_reads_default_to_tip;
         ] );
-- 
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