Update Mailer generator to use 1.9 styled hash when run on Ruby 1.9

As always, you can run `--old-style-hash` to override that.

actionmailer/lib/rails/generators/mailer/templates/mailer.rb

@@ -1,6 +1,6 @@
 <% module_namespacing  do -%>
 class <%= class_name %> < ActionMailer::Base
-  default :from => "from@example.com"
+  default <%= key_value :from, '"from@example.com"' %>
 <% for  action in actions -%>
 
   # Subject can be set in your I18n file at config/locales/en.yml
@@ -11,7 +11,7 @@ class <%= class_name %> < ActionMailer::Base
   def <%= action %>
     @greeting = "Hi"
 
-    mail :to => "to@example.org"
+    mail <%= key_value :to, '"to@example.org"' %>
   end
 <% end  -%>
 end

railties/CHANGELOG

@@ -30,7 +30,7 @@ by the prototype-rails gem. [fxn]
 
 * jQuery is the new default JavaScript library. [fxn]
 
-* Changed scaffold and app generator to create Ruby 1.9 style hash when running on Ruby 1.9 [Prem Sichanugrist]
+* Changed scaffold, application, and mailer generator to create Ruby 1.9 style hash when running on Ruby 1.9 [Prem Sichanugrist]
 
   So instead of creating something like:
 

railties/test/generators/mailer_generator_test.rb

@@ -10,7 +10,11 @@ class MailerGeneratorTest < Rails::Generators::TestCase
     run_generator
     assert_file "app/mailers/notifier.rb" do |mailer|
       assert_match /class Notifier < ActionMailer::Base/, mailer
-      assert_match /default :from => "from@example.com"/, mailer
+      if RUBY_VERSION < "1.9"
+        assert_match /default :from => "from@example.com"/, mailer
+      else
+        assert_match /default from: "from@example.com"/, mailer
+      end
     end
   end
 
@@ -73,15 +77,33 @@ class MailerGeneratorTest < Rails::Generators::TestCase
 
     assert_file "app/mailers/notifier.rb" do |mailer|
       assert_instance_method :foo, mailer do |foo|
-        assert_match /mail :to => "to@example.org"/, foo
+        if RUBY_VERSION < "1.9"
+          assert_match /mail :to => "to@example.org"/, foo
+        else
+          assert_match /mail to: "to@example.org"/, foo
+        end
         assert_match /@greeting = "Hi"/, foo
       end
 
       assert_instance_method :bar, mailer do |bar|
-        assert_match /mail :to => "to@example.org"/, bar
+        if RUBY_VERSION < "1.9"
+          assert_match /mail :to => "to@example.org"/, bar
+        else
+          assert_match /mail to: "to@example.org"/, bar
+        end
         assert_match /@greeting = "Hi"/, bar
       end
     end
+  end
 
+  def test_force_old_style_hash
+    run_generator ["notifier", "foo", "--old-style-hash"]
+    assert_file "app/mailers/notifier.rb" do |mailer|
+      assert_match /default :from => "from@example.com"/, mailer
+
+      assert_instance_method :foo, mailer do |foo|
+        assert_match /mail :to => "to@example.org"/, foo
+      end
+    end
   end
 end