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/rexml/node/previous_sibling_node_spec.rb

@@ -0,0 +1,21 @@
+require File.expand_path('../../../../spec_helper', __FILE__)
+require 'rexml/document'
+
+describe "REXML::Node#previous_sibling_node" do
+  before :each do
+    @e = REXML::Element.new("root")
+    @node1 = REXML::Element.new("node")
+    @node2 = REXML::Element.new("another node")
+    @e << @node1
+    @e << @node2
+  end
+
+  it "returns the previous child node in parent" do
+    @node2.previous_sibling_node.should == @node1
+  end
+
+  it "returns nil if there are no more child nodes before" do
+    @node1.previous_sibling_node.should == nil
+    @e.previous_sibling_node.should == nil
+  end
+end