Add tests for modifying rest args before post args.

Author: aardvark179

spec/ruby/language/super_spec.rb

@@ -303,6 +303,13 @@ def obj.foobar(array)
     SuperSpecs::ZSuperWithRestOthersAndPost::B.new.m(1, 2).should == []
   end
 
+  it "without explicit arguments passes arguments, rest arguments including modifications, and post arguments" do
+    SuperSpecs::ZSuperWithRestAndPost::B.new.m_modified(1, 2, 3, 4, 5).should == [1, 14, 3]
+    SuperSpecs::ZSuperWithRestOthersAndPost::B.new.m_modified(1, 2, 3, 4, 5).should == [2, 14, 4]
+    SuperSpecs::ZSuperWithRestAndPost::B.new.m_modified(1, 2).should == [nil, 14]
+    SuperSpecs::ZSuperWithRestOthersAndPost::B.new.m_modified(1, 2).should == [nil, 14]
+  end
+
   it "without explicit arguments passes arguments and rest arguments including any modifications" do
     SuperSpecs::ZSuperWithRestAndOthers::B.new.m_modified(1, 2, 3, 4, 5).should == [3, 14, 5]
   end