Add in-tree mspec and ruby/spec

* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
  These files can therefore be updated like any other file in MRI.
  Instructions are provided in spec/README.
  [Feature #13156] [ruby-core:79246]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/rubyspec/core/kernel/send_spec.rb

@@ -0,0 +1,68 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+require File.expand_path('../../../shared/basicobject/send', __FILE__)
+
+describe "Kernel#send" do
+  it "invokes the named public method" do
+    class KernelSpecs::Foo
+      def bar
+        'done'
+      end
+    end
+    KernelSpecs::Foo.new.send(:bar).should == 'done'
+  end
+
+  it "invokes the named alias of a public method" do
+    class KernelSpecs::Foo
+      def bar
+        'done'
+      end
+      alias :aka :bar
+    end
+    KernelSpecs::Foo.new.send(:aka).should == 'done'
+  end
+
+  it "invokes the named protected method" do
+    class KernelSpecs::Foo
+      protected
+      def bar
+        'done'
+      end
+    end
+    KernelSpecs::Foo.new.send(:bar).should == 'done'
+  end
+
+  it "invokes the named private method" do
+    class KernelSpecs::Foo
+      private
+      def bar
+        'done2'
+      end
+    end
+    KernelSpecs::Foo.new.send(:bar).should == 'done2'
+  end
+
+  it "invokes the named alias of a private method" do
+    class KernelSpecs::Foo
+      private
+      def bar
+        'done2'
+      end
+      alias :aka :bar
+    end
+    KernelSpecs::Foo.new.send(:aka).should == 'done2'
+  end
+
+  it "invokes the named alias of a protected method" do
+    class KernelSpecs::Foo
+      protected
+      def bar
+        'done2'
+      end
+      alias :aka :bar
+    end
+    KernelSpecs::Foo.new.send(:aka).should == 'done2'
+  end
+
+  it_behaves_like(:basicobject_send, :send)
+end