Move spec/rubyspec to spec/ruby for consistency

* Other ruby implementations use the spec/ruby directory.
  [Misc #13792] [ruby-core:82287]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/ruby/core/string/freeze_spec.rb

@@ -0,0 +1,18 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "String#freeze" do
+
+  it "produces the same object whenever called on an instance of a literal in the source" do
+    ids = Array.new(2) { "abc".freeze.object_id }
+    ids.first.should == ids.last
+  end
+
+  it "doesn't produce the same object for different instances of literals in the source" do
+    "abc".object_id.should_not == "abc".object_id
+  end
+
+  it "being a special form doesn't change the value of defined?" do
+    defined?("abc".freeze).should == "method"
+  end
+
+end