Add specs for Module#refinements and Refinement#refined_class

core/module/refinements_spec.rb

@@ -0,0 +1,22 @@
+require_relative '../../spec_helper'
+
+describe "Module#refinements" do
+  ruby_version_is "3.2" do
+    it "returns list of classes redefined in module" do
+      refined_integer = nil
+      refined_string = nil
+
+      m = Module.new do
+        refine Integer do
+          refined_integer = self
+        end
+
+        refine String do
+          refined_string = self
+        end
+      end
+
+      m.refinements.should == [refined_integer, refined_string]
+    end
+  end
+end

core/refinement/refined_class_spec.rb

@@ -0,0 +1,20 @@
+require_relative '../../spec_helper'
+
+describe "Refinement#refined_class" do
+  ruby_version_is "3.2" do
+    it "returns the class refined by the receiver" do
+      r = Module.new do
+        refine Integer do
+          refined_integer = self
+        end
+
+        refine String do
+          refined_string = self
+        end
+      end.refinements
+
+      r[0].refined_class.should == Integer
+      r[1].refined_class.should == String
+    end
+  end
+end