Move Pathname to rely less on shared examples

Also add one alias test

Author: Earlopain

library/pathname/case_compare_spec.rb

@@ -0,0 +1,8 @@
+require_relative '../../spec_helper'
+require 'pathname'
+
+describe "Pathname#===" do
+  it "is an alias of Pathname#==" do
+    Pathname.instance_method(:===).should == Pathname.instance_method(:==)
+  end
+end

library/pathname/divide_spec.rb

@@ -1,6 +1,8 @@
 require_relative '../../spec_helper'
-require_relative 'shared/plus'
+require 'pathname'
 
 describe "Pathname#/" do
-  it_behaves_like :pathname_plus, :/
+  it "is an alias of Pathname#+" do
+    Pathname.instance_method(:/).should == Pathname.instance_method(:+)
+  end
 end

library/pathname/plus_spec.rb

@@ -1,6 +1,9 @@
 require_relative '../../spec_helper'
-require_relative 'shared/plus'
+require 'pathname'
 
 describe "Pathname#+" do
-  it_behaves_like :pathname_plus, :+
+  it "appends a pathname to self" do
+    p = Pathname.new("/usr")
+    (p + "bin/ruby").should == Pathname.new("/usr/bin/ruby")
+  end
 end