1 files changed, 49 insertions, 0 deletions
diff --git a/spec/ruby/core/unboundmethod/super_method_spec.rb b/spec/ruby/core/unboundmethod/super_method_spec.rb
new file mode 100644
index 0000000000..aa7c129377
--- /dev/null
+++ b/spec/ruby/core/unboundmethod/super_method_spec.rb
@@ -0,0 +1,49 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative '../method/fixtures/classes'
+
+describe "UnboundMethod#super_method" do
+  it "returns the method that would be called by super in the method" do
+    meth = UnboundMethodSpecs::C.instance_method(:overridden)
+    meth = meth.super_method
+    meth.should == UnboundMethodSpecs::B.instance_method(:overridden)
+    meth = meth.super_method
+    meth.should == UnboundMethodSpecs::A.instance_method(:overridden)
+  end
+
+  it "returns nil when there's no super method in the parent" do
+    method = Kernel.instance_method(:method)
+    method.super_method.should == nil
+  end
+
+  it "returns nil when the parent's method is removed" do
+    parent = Class.new { def foo; end }
+    child = Class.new(parent) { def foo; end }
+
+    method = child.instance_method(:foo)
+
+    parent.send(:undef_method, :foo)
+
+    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
+      method = MethodSpecs::InheritedMethods::C.instance_method(:derp)
+      method.bind(MethodSpecs::InheritedMethods::C.new).call.should == 'BA'
+    end
+
+    it "returns the expected super_method" do
+      method = MethodSpecs::InheritedMethods::C.instance_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.instance_method(:meow)
+      method.super_method.owner.should == MethodSpecs::InheritedMethods::A
+    end
+  end
+end