Add a failing spec which demonstrates #1077

spec/rspec/mocks/any_instance_spec.rb

@@ -163,9 +163,20 @@ def private_method; :private_method_return_value; end
           end
 
           it "allows an expectation to be set on a subclass when an allowance already exists on a superclass" do
-            allow_any_instance_of(super_class).to receive(:foo)
-            expect_any_instance(sub_class).to receive(:foo).with(:bar)
-            sub_class.new.foo(:bar)
+            class A
+              def foo
+                true
+              end
+            end
+
+            class B < A
+              def foo
+                super
+              end
+            end
+            allow_any_instance_of(A).to receive(:foo)
+            expect_any_instance_of(B).to receive(:foo).with(:bar)
+            B.new.foo(:bar)
           end
         end