test: add nested empty-object list item fixtures

CHANGELOG.md

@@ -12,6 +12,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - §7.1 ABNF `unescaped-char`: supplementary scalars (`%x10000-10FFFF`) included explicitly.
 - §13: option names and value tokens are concept handles; implementations MAY use language-idiomatic spellings or types.
 - Appendix F.5: informative Java mapping section.
+- Test fixtures: nested expanded arrays containing empty object list items, confirming recursive bare-hyphen encoding/decoding per §9.4/§10.
 
 ### Changed
 

tests/fixtures/decode/arrays-nested.json

@@ -160,6 +160,16 @@
       "expected": ["summary", { "id": 1, "name": "Ada" }, [{ "id": 2 }, { "status": "draft" }]],
       "specSection": "9.4"
     },
+    {
+      "name": "parses nested arrays with empty object list items",
+      "input": "items[2]:\n  - [1]:\n    -\n  - [2]:\n    - x\n    -",
+      "expected": {
+        "items": [[{}], ["x", {}]]
+      },
+      "specSection": "9.4",
+      "minSpecVersion": "3.2",
+      "note": "The bare hyphen marker for an empty object list item applies recursively inside nested expanded arrays"
+    },
     {
       "name": "parses root-level array of arrays",
       "input": "[2]:\n  - [2]: 1,2\n  - [0]:",

tests/fixtures/encode/arrays-nested.json

@@ -59,6 +59,16 @@
       "expected": "[3]:\n  - summary\n  - id: 1\n    name: Ada\n  - [2]:\n    - id: 2\n    - status: draft",
       "specSection": "9.4"
     },
+    {
+      "name": "encodes nested arrays with empty object list items as bare hyphen",
+      "input": {
+        "items": [[{}], ["x", {}]]
+      },
+      "expected": "items[2]:\n  - [1]:\n    -\n  - [2]:\n    - x\n    -",
+      "specSection": "9.4",
+      "minSpecVersion": "3.2",
+      "note": "Nested non-primitive arrays use expanded list form per §9.4; empty object list items inside them still encode as a bare hyphen per §10, with no trailing space per §12"
+    },
     {
       "name": "encodes root-level arrays of arrays",
       "input": [[1, 2], []],