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/library/stringio/readchar_spec.rb

@@ -0,0 +1,20 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require 'stringio'
+require File.expand_path('../shared/readchar', __FILE__)
+
+describe "StringIO#readchar" do
+  it_behaves_like :stringio_readchar, :readchar
+
+  it "reads the next 8-bit byte from self's current position" do
+    io = StringIO.new("example")
+
+    io.send(@method).should == ?e
+
+    io.pos = 4
+    io.send(@method).should == ?p
+  end
+end
+
+describe "StringIO#readchar when self is not readable" do
+  it_behaves_like :stringio_readchar_not_readable, :readchar
+end