diff --git a/head/schema-ruby/test/inputs/schema/top-level-enum.schema/default/TopLevel.rb b/head/schema-ruby/test/inputs/schema/top-level-enum.schema/default/TopLevel.rb
new file mode 100644
index 0000000..a6e5d60
--- /dev/null
+++ b/head/schema-ruby/test/inputs/schema/top-level-enum.schema/default/TopLevel.rb
@@ -0,0 +1,34 @@
+# This code may look unusually verbose for Ruby (and it is), but
+# it performs some subtle and complex validation of JSON data.
+#
+# To parse this JSON, add 'dry-struct' and 'dry-types' gems, then do:
+#
+#   top_level = TopLevel.from_json! "…"
+#   puts top_level == TopLevel::One
+#
+# If from_json! succeeds, the value returned matches the schema.
+
+require 'json'
+require 'dry-types'
+require 'dry-struct'
+
+module Types
+  include Dry.Types(default: :nominal)
+
+  String   = Strict::String
+  TopLevel = Strict::String.enum("one", "three", "two")
+end
+
+module TopLevel
+  One   = "one"
+  Three = "three"
+  Two   = "two"
+
+  def self.from_dynamic!(d)
+    Types::TopLevel[d]
+  end
+
+  def self.from_json!(json)
+    from_dynamic!(JSON.parse(json))
+  end
+end