1 files changed, 25 insertions, 19 deletions

diff --git a/spec/test_frontmatter.lua b/spec/test_frontmatter.lua
index 3f0c4c5..f729254 100644
--- a/spec/test_frontmatter.lua
+++ b/spec/test_frontmatter.lua
@@ -2,18 +2,18 @@
 --
 -- The body is the part a broken header must never cost the user, so every
 -- degraded case is checked for "body preserved verbatim" as well as for the
--- warning. Cases that actually parse YAML need lyaml and skip without it.
+-- warning. Cases that actually parse YAML need tinyyaml and skip without it.
 
 local frontmatter = require("subagents.frontmatter")
 
-local function lyaml_or_skip()
-    return pcall(require, "lyaml")
+local function yaml_or_skip()
+    return pcall(require, "tinyyaml")
 end
 
 return {
     { "fenced header parses and keeps the body verbatim", function()
-        if not lyaml_or_skip() then
-            return "skip", "lyaml is not installed"
+        if not yaml_or_skip() then
+            return "skip", "tinyyaml is not installed"
         end
         local body = "You are a reviewer.\n\n  indented line  \n"
         local data, parsed_body, warning = frontmatter.parse(
@@ -27,8 +27,8 @@ return {
     end },
 
     { "CRLF fences are tolerated", function()
-        if not lyaml_or_skip() then
-            return "skip", "lyaml is not installed"
+        if not yaml_or_skip() then
+            return "skip", "tinyyaml is not installed"
         end
         local data, body, warning = frontmatter.parse("---\r\nname: crlf\r\n---\r\nbody\r\n")
         assert(warning == nil, tostring(warning))
@@ -59,26 +59,32 @@ return {
         assert(warning == nil, tostring(warning))
     end },
 
-    { "broken YAML warns and keeps the body", function()
-        if not lyaml_or_skip() then
-            return "skip", "lyaml is not installed"
+    { "a header the parser rejects warns and keeps the body", function()
+        if not yaml_or_skip() then
+            return "skip", "tinyyaml is not installed"
         end
-        local data, body, warning = frontmatter.parse("---\na: [unclosed\n---\nbody\n")
-        assert(data == nil, "a broken header must not produce metadata")
+        local data, body, warning = frontmatter.parse("---\njust a string\n---\nbody\n")
+        assert(data == nil, "a rejected header must not produce metadata")
         assert(body == "body\n", string.format("%q", body))
         assert(type(warning) == "string" and warning:find("did not parse", 1, true),
             "expected a parse warning, got " .. tostring(warning))
     end },
 
-    { "a non-mapping document warns and keeps the body", function()
-        if not lyaml_or_skip() then
-            return "skip", "lyaml is not installed"
+    { "an unresolved alias is dropped rather than read literally", function()
+        if not yaml_or_skip() then
+            return "skip", "tinyyaml is not installed"
         end
-        local data, body, warning = frontmatter.parse("---\njust a string\n---\nbody\n")
-        assert(data == nil, "a scalar header must not produce metadata")
+        -- tinyyaml does not resolve aliases: without the guard in parse(), the
+        -- `*d` token would arrive as the literal string "*d" and become this
+        -- profile's name.
+        local data, body, warning = frontmatter.parse(
+            "---\ndefs: &d my-agent\nname: *d\n---\nbody\n")
+        assert(type(data) == "table", "the mapping itself should survive")
+        assert(data.name == nil, "an alias must not become a value, got " .. tostring(data.name))
+        assert(data.defs == nil, "an anchor must not become a value, got " .. tostring(data.defs))
         assert(body == "body\n", string.format("%q", body))
-        assert(type(warning) == "string" and warning:find("not a mapping", 1, true),
-            "expected a mapping warning, got " .. tostring(warning))
+        assert(type(warning) == "string" and warning:find("anchors/aliases", 1, true),
+            "expected an alias warning, got " .. tostring(warning))
     end },
 
     { "empty input is empty output", function()