Ensure application names are not singularized.

railties/lib/rails/generators/rails/app/app_generator.rb

@@ -194,7 +194,7 @@ def app_name
       end
 
       def app_const_base
-        @app_const_base ||= app_name.gsub(/\W/, '_').squeeze('_').classify
+        @app_const_base ||= app_name.gsub(/\W/, '_').squeeze('_').camelize
       end
 
       def app_const

railties/test/generators/app_generator_test.rb

@@ -55,16 +55,21 @@ def test_invalid_database_option_raises_an_error
   end
 
   def test_invalid_application_name_raises_an_error
-    content = capture(:stderr){ Rails::Generators::AppGenerator.start [File.join(destination_root, "43-things")] }
+    content = capture(:stderr){ run_generator [File.join(destination_root, "43-things")] }
     assert_equal "Invalid application name 43-things. Please give a name which does not start with numbers.\n", content
   end
 
   def test_invalid_application_name_is_fixed
-    silence(:stdout){ Rails::Generators::AppGenerator.start [File.join(destination_root, "things-43")] }
+    run_generator [File.join(destination_root, "things-43")]
     assert_file "things-43/config/environment.rb", /Things43::Application\.initialize!/
     assert_file "things-43/config/application.rb", /^module Things43$/
   end
 
+  def test_application_names_are_not_singularized
+    run_generator [File.join(destination_root, "hats")]
+    assert_file "hats/config/environment.rb", /Hats::Application\.initialize!/
+  end
+
   def test_config_database_is_added_by_default
     run_generator
     assert_file "config/database.yml", /sqlite3/