diff --git a/core/data/define_spec.rb b/core/data/define_spec.rb
new file mode 100644
index 000000000..abfdd3e6a
--- /dev/null
+++ b/core/data/define_spec.rb
@@ -0,0 +1,26 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+ruby_version_is "3.2" do
+  describe "Data.define" do
+    it "accepts no arguments" do
+      empty_data = Data.define
+      empty_data.members.should == []
+    end
+
+    it "accepts symbols" do
+      movie_with_symbol = Data.define(:title, :year)
+      movie_with_symbol.members.should == [:title, :year]
+    end
+
+    it "accepts strings" do
+      movie_with_string = Data.define("title", "year")
+      movie_with_string.members.should == [:title, :year]
+    end
+
+    it "accepts a mix of strings and symbols" do
+      blockbuster_movie = Data.define("title", :year, "genre")
+      blockbuster_movie.members.should == [:title, :year, :genre]
+    end
+  end
+end