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/etc/getpwnam_spec.rb

@@ -0,0 +1,28 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require 'etc'
+
+platform_is :windows do
+  describe "Etc.getpwnam" do
+    it "returns nil" do
+      Etc.getpwnam(1).should == nil
+      Etc.getpwnam(nil).should == nil
+      Etc.getpwnam('nil').should == nil
+    end
+  end
+end
+
+platform_is_not :windows do
+  describe "Etc.getpwnam" do
+    it "returns a Etc::Passwd struct instance for the given user" do
+      pw = Etc.getpwnam(`whoami`.strip)
+      pw.is_a?(Etc::Passwd).should == true
+    end
+
+    it "only accepts strings as argument" do
+      lambda {
+        Etc.getpwnam(123)
+        Etc.getpwnam(nil)
+      }.should raise_error(TypeError)
+    end
+  end
+end