Add specs for Data#to_h

core/data/to_h_test.rb

@@ -0,0 +1,11 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+ruby_version_is "3.2" do
+  describe "Data#to_h" do
+    it "transforms the data object into a hash" do
+      data = DataSpecs::Measure.new(amount: 42, unit: 'km')
+      data.to_h.should == { amount: 42, unit: 'km' }
+    end
+  end
+end