Add specs for Module#refinements and Refinement#refined_class

core/module/refinements_spec.rb

@@ -0,0 +1,45 @@
+require_relative '../../spec_helper'
+
+describe "Module#refinements" do
+  ruby_version_is "3.2" do
+    it "returns refinements defined in a module" do
+      ScratchPad.record []
+
+      m2 = Module.new do
+        refine String do
+          ScratchPad << self
+        end
+
+        refine Array do
+          ScratchPad << self
+        end
+      end
+
+      m2.refinements.sort_by(&:object_id).should == ScratchPad.recorded.sort_by(&:object_id)
+    end
+
+    it "does not returns refinements defined in the included module" do
+      ScratchPad.record []
+
+      m1 = Module.new do
+        refine Integer do
+          nil
+        end
+      end
+
+      m2 = Module.new do
+        include m1
+
+        refine String do
+          ScratchPad << self
+        end
+      end
+
+      m2.refinements.should == ScratchPad.recorded
+    end
+
+    it "returns an empty array if no refinements defined in a module" do
+      Module.new.refinements.should == []
+    end
+  end
+end

core/refinement/refined_class_spec.rb

@@ -0,0 +1,17 @@
+require_relative '../../spec_helper'
+
+describe "Refinement#refined_class" do
+  ruby_version_is "3.2" do
+    it "returns the class refined by the receiver" do
+      refinement_int = nil
+
+      Module.new do
+        refine Integer do
+          refinement_int = self
+        end
+      end
+
+      refinement_int.refined_class.should == Integer
+    end
+  end
+end