1 files changed, 37 insertions, 1 deletions
diff --git a/spec/ruby/core/data/fixtures/classes.rb b/spec/ruby/core/data/fixtures/classes.rb
index 46a6b48bb2..147293ee45 100644
--- a/spec/ruby/core/data/fixtures/classes.rb
+++ b/spec/ruby/core/data/fixtures/classes.rb
@@ -1,5 +1,41 @@
 module DataSpecs
-  guard -> { ruby_version_is "3.2" and Data.respond_to?(:define) } do
+  if Data.respond_to?(:define)
     Measure = Data.define(:amount, :unit)
+    Single = Data.define(:value)
+
+    class MeasureWithOverriddenName < Measure
+      def self.name
+        "A"
+      end
+    end
+
+    class SingleWithOverriddenName < Single
+      def self.name
+        "A"
+      end
+    end
+
+    class DataSubclass < Data; end
+
+    MeasureSubclass = Class.new(Measure) do
+      def initialize(amount:, unit:)
+        super
+      end
+    end
+
+    Empty = Data.define()
+
+    DataWithOverriddenInitialize = Data.define(:amount, :unit) do
+      def initialize(*rest, **kw)
+        super
+        ScratchPad.record [:initialize, rest, kw]
+      end
+    end
+
+    Area = Data.define(:width, :height, :area) do
+      def initialize(width:, height:)
+        super(width: width, height: height, area: width * height)
+      end
+    end
   end
 end