1 files changed, 64 insertions, 0 deletions
diff --git a/spec/ruby/core/method/super_method_spec.rb b/spec/ruby/core/method/super_method_spec.rb
new file mode 100644
index 0000000000..c63a7aaa0f
--- /dev/null
+++ b/spec/ruby/core/method/super_method_spec.rb
@@ -0,0 +1,64 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+describe "Method#super_method" do
+  it "returns the method that would be called by super in the method" do
+    obj = MethodSpecs::C.new
+    obj.extend MethodSpecs::OverrideAgain
+    meth = obj.method(:overridden)
+
+    s_meth = meth.super_method
+    s_meth.owner.should == MethodSpecs::C
+    s_meth.receiver.should == obj
+    s_meth.name.should == :overridden
+
+    ss_meth = meth.super_method.super_method
+    ss_meth.owner.should == MethodSpecs::BetweenBAndC
+    ss_meth.receiver.should == obj
+    ss_meth.name.should == :overridden
+
+    sss_meth = meth.super_method.super_method.super_method
+    sss_meth.owner.should == MethodSpecs::B
+    sss_meth.receiver.should == obj
+    sss_meth.name.should == :overridden
+  end
+
+  it "returns nil when there's no super method in the parent" do
+    method = Object.new.method(:method)
+    method.super_method.should == nil
+  end
+
+  it "returns nil when the parent's method is removed" do
+    klass = Class.new do
+      def overridden; end
+    end
+    sub = Class.new(klass) do
+      def overridden; end
+    end
+    object = sub.new
+    method = object.method(:overridden)
+
+    klass.class_eval { undef :overridden }
+
+    method.super_method.should == nil
+  end
+
+  # https://github.com/jruby/jruby/issues/7240
+  context "after changing an inherited methods visibility" do
+    it "calls the proper super method" do
+      MethodSpecs::InheritedMethods::C.new.derp.should == 'BA'
+    end
+
+    it "returns the expected super_method" do
+      method = MethodSpecs::InheritedMethods::C.new.method(:derp)
+      method.super_method.owner.should == MethodSpecs::InheritedMethods::A
+    end
+  end
+
+  context "after aliasing an inherited method" do
+    it "returns the expected super_method" do
+      method = MethodSpecs::InheritedMethods::C.new.method(:meow)
+      method.super_method.owner.should == MethodSpecs::InheritedMethods::A
+    end
+  end
+end