Revert "Bundle I18n 0.2.0."

This reverts commit 83f329f5f30567a10bc96410da230bf986db8ad4.

15 files changed, 1345 insertions, 2 deletions

diff --git a/activesupport/lib/active_support/core_ext/string/interpolation.rb b/activesupport/lib/active_support/core_ext/string/interpolation.rb
index c4a5c0ca35..d9159b690a 100644
--- a/activesupport/lib/active_support/core_ext/string/interpolation.rb
+++ b/activesupport/lib/active_support/core_ext/string/interpolation.rb
@@ -5,7 +5,7 @@
   You may redistribute it and/or modify it under the same license terms as Ruby.
 =end
 
-if RUBY_VERSION < '1.9' && !"".respond_to?(:interpolate_without_ruby_19_syntax)
+if RUBY_VERSION < '1.9'
   require 'active_support/core_ext/string/bytesize'
 
   # KeyError is raised by String#% when the string contains a named placeholder
diff --git a/activesupport/lib/active_support/vendor.rb b/activesupport/lib/active_support/vendor.rb
index 15898d153c..4a711b7e25 100644
--- a/activesupport/lib/active_support/vendor.rb
+++ b/activesupport/lib/active_support/vendor.rb
@@ -4,7 +4,7 @@ def ActiveSupport.requirable?(file)
   $LOAD_PATH.any? { |p| Dir.glob("#{p}/#{file}.*").any? }
 end
 
-[%w(builder 2.1.2), %w(memcache-client 1.7.5), %w(tzinfo 0.3.15)].each do |lib, version|
+[%w(builder 2.1.2), %w(i18n 0.1.3), %w(memcache-client 1.7.5), %w(tzinfo 0.3.15)].each do |lib, version|
   # If the lib is not already requirable
   unless ActiveSupport.requirable? lib
     # Try to activate a gem ~> satisfying the requested version first.
diff --git a/activesupport/lib/active_support/vendor/i18n-0.1.3/MIT-LICENSE b/activesupport/lib/active_support/vendor/i18n-0.1.3/MIT-LICENSE
new file mode 100755
index 0000000000..ed8e9ee66d
--- /dev/null
+++ b/activesupport/lib/active_support/vendor/i18n-0.1.3/MIT-LICENSE
@@ -0,0 +1,20 @@
+Copyright (c) 2008 The Ruby I18n team
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
\ No newline at end of file
diff --git a/activesupport/lib/active_support/vendor/i18n-0.1.3/README.textile b/activesupport/lib/active_support/vendor/i18n-0.1.3/README.textile
new file mode 100644
index 0000000000..a07fc8426d
--- /dev/null
+++ b/activesupport/lib/active_support/vendor/i18n-0.1.3/README.textile
@@ -0,0 +1,20 @@
+h1. Ruby I18n gem
+
+I18n and localization solution for Ruby.
+
+For information please refer to http://rails-i18n.org
+
+h2. Authors
+
+* "Matt Aimonetti":http://railsontherun.com
+* "Sven Fuchs":http://www.artweb-design.de
+* "Joshua Harvey":http://www.workingwithrails.com/person/759-joshua-harvey
+* "Saimon Moore":http://saimonmoore.net
+* "Stephan Soller":http://www.arkanis-development.de
+
+h2. License
+
+MIT License. See the included MIT-LICENCE file.
+
+
+
diff --git a/activesupport/lib/active_support/vendor/i18n-0.1.3/Rakefile b/activesupport/lib/active_support/vendor/i18n-0.1.3/Rakefile
new file mode 100644
index 0000000000..2164e13e69
--- /dev/null
+++ b/activesupport/lib/active_support/vendor/i18n-0.1.3/Rakefile
@@ -0,0 +1,5 @@
+task :default => [:test]
+
+task :test do
+  ruby "test/all.rb"
+end
diff --git a/activesupport/lib/active_support/vendor/i18n-0.1.3/i18n.gemspec b/activesupport/lib/active_support/vendor/i18n-0.1.3/i18n.gemspec
new file mode 100644
index 0000000000..f102689a6f
--- /dev/null
+++ b/activesupport/lib/active_support/vendor/i18n-0.1.3/i18n.gemspec
@@ -0,0 +1,27 @@
+Gem::Specification.new do |s|
+  s.name = "i18n"
+  s.version = "0.1.3"
+  s.date = "2009-01-09"
+  s.summary = "Internationalization support for Ruby"
+  s.email = "rails-i18n@googlegroups.com"
+  s.homepage = "http://rails-i18n.org"
+  s.description = "Add Internationalization support to your Ruby application."
+  s.has_rdoc = false
+  s.authors = ['Sven Fuchs', 'Joshua Harvey', 'Matt Aimonetti', 'Stephan Soller', 'Saimon Moore']
+  s.files = [
+    'i18n.gemspec',
+    'lib/i18n/backend/simple.rb',
+    'lib/i18n/exceptions.rb',
+    'lib/i18n.rb',
+    'MIT-LICENSE',
+    'README.textile'
+  ]
+  s.test_files = [
+    'test/all.rb',
+    'test/i18n_exceptions_test.rb',
+    'test/i18n_test.rb',
+    'test/locale/en.rb',
+    'test/locale/en.yml',
+    'test/simple_backend_test.rb'
+  ]
+end
diff --git a/activesupport/lib/active_support/vendor/i18n-0.1.3/lib/i18n.rb b/activesupport/lib/active_support/vendor/i18n-0.1.3/lib/i18n.rb
new file mode 100755
index 0000000000..1b49debc05
--- /dev/null
+++ b/activesupport/lib/active_support/vendor/i18n-0.1.3/lib/i18n.rb
@@ -0,0 +1,204 @@
+#--
+# Authors::   Matt Aimonetti (http://railsontherun.com/),
+#             Sven Fuchs (http://www.artweb-design.de),
+#             Joshua Harvey (http://www.workingwithrails.com/person/759-joshua-harvey),
+#             Saimon Moore (http://saimonmoore.net),
+#             Stephan Soller (http://www.arkanis-development.de/)
+# Copyright:: Copyright (c) 2008 The Ruby i18n Team
+# License::   MIT
+#++
+
+module I18n
+  autoload :ArgumentError, 'i18n/exceptions'
+  module Backend
+    autoload :Simple, 'i18n/backend/simple'
+  end
+
+  @@backend = nil
+  @@load_path = nil
+  @@default_locale = :'en'
+  @@exception_handler = :default_exception_handler
+
+  class << self
+    # Returns the current backend. Defaults to +Backend::Simple+.
+    def backend
+      @@backend ||= Backend::Simple.new
+    end
+
+    # Sets the current backend. Used to set a custom backend.
+    def backend=(backend)
+      @@backend = backend
+    end
+
+    # Returns the current default locale. Defaults to :'en'
+    def default_locale
+      @@default_locale
+    end
+
+    # Sets the current default locale. Used to set a custom default locale.
+    def default_locale=(locale)
+      @@default_locale = locale
+    end
+
+    # Returns the current locale. Defaults to I18n.default_locale.
+    def locale
+      Thread.current[:locale] ||= default_locale
+    end
+
+    # Sets the current locale pseudo-globally, i.e. in the Thread.current hash.
+    def locale=(locale)
+      Thread.current[:locale] = locale
+    end
+
+    # Returns an array of locales for which translations are available
+    def available_locales
+      backend.available_locales
+    end
+
+    # Sets the exception handler.
+    def exception_handler=(exception_handler)
+      @@exception_handler = exception_handler
+    end
+
+    # Allow clients to register paths providing translation data sources. The
+    # backend defines acceptable sources.
+    #
+    # E.g. the provided SimpleBackend accepts a list of paths to translation
+    # files which are either named *.rb and contain plain Ruby Hashes or are
+    # named *.yml and contain YAML data. So for the SimpleBackend clients may
+    # register translation files like this:
+    #   I18n.load_path << 'path/to/locale/en.yml'
+    def load_path
+      @@load_path ||= []
+    end
+
+    # Sets the load path instance. Custom implementations are expected to
+    # behave like a Ruby Array.
+    def load_path=(load_path)
+      @@load_path = load_path
+    end
+
+    # Tells the backend to reload translations. Used in situations like the
+    # Rails development environment. Backends can implement whatever strategy
+    # is useful.
+    def reload!
+      backend.reload!
+    end
+
+    # Translates, pluralizes and interpolates a given key using a given locale,
+    # scope, and default, as well as interpolation values.
+    #
+    # *LOOKUP*
+    #
+    # Translation data is organized as a nested hash using the upper-level keys
+    # as namespaces. <em>E.g.</em>, ActionView ships with the translation:
+    # <tt>:date => {:formats => {:short => "%b %d"}}</tt>.
+    #
+    # Translations can be looked up at any level of this hash using the key argument
+    # and the scope option. <em>E.g.</em>, in this example <tt>I18n.t :date</tt>
+    # returns the whole translations hash <tt>{:formats => {:short => "%b %d"}}</tt>.
+    #
+    # Key can be either a single key or a dot-separated key (both Strings and Symbols
+    # work). <em>E.g.</em>, the short format can be looked up using both:
+    #   I18n.t 'date.formats.short'
+    #   I18n.t :'date.formats.short'
+    #
+    # Scope can be either a single key, a dot-separated key or an array of keys
+    # or dot-separated keys. Keys and scopes can be combined freely. So these
+    # examples will all look up the same short date format:
+    #   I18n.t 'date.formats.short'
+    #   I18n.t 'formats.short', :scope => 'date'
+    #   I18n.t 'short', :scope => 'date.formats'
+    #   I18n.t 'short', :scope => %w(date formats)
+    #
+    # *INTERPOLATION*
+    #
+    # Translations can contain interpolation variables which will be replaced by
+    # values passed to #translate as part of the options hash, with the keys matching
+    # the interpolation variable names.
+    #
+    # <em>E.g.</em>, with a translation <tt>:foo => "foo {{bar}}"</tt> the option
+    # value for the key +bar+ will be interpolated into the translation:
+    #   I18n.t :foo, :bar => 'baz' # => 'foo baz'
+    #
+    # *PLURALIZATION*
+    #
+    # Translation data can contain pluralized translations. Pluralized translations
+    # are arrays of singluar/plural versions of translations like <tt>['Foo', 'Foos']</tt>.
+    #
+    # Note that <tt>I18n::Backend::Simple</tt> only supports an algorithm for English
+    # pluralization rules. Other algorithms can be supported by custom backends.
+    #
+    # This returns the singular version of a pluralized translation:
+    #   I18n.t :foo, :count => 1 # => 'Foo'
+    #
+    # These both return the plural version of a pluralized translation:
+    #   I18n.t :foo, :count => 0 # => 'Foos'
+    #   I18n.t :foo, :count => 2 # => 'Foos'
+    #
+    # The <tt>:count</tt> option can be used both for pluralization and interpolation.
+    # <em>E.g.</em>, with the translation
+    # <tt>:foo => ['{{count}} foo', '{{count}} foos']</tt>, count will
+    # be interpolated to the pluralized translation:
+    #   I18n.t :foo, :count => 1 # => '1 foo'
+    #
+    # *DEFAULTS*
+    #
+    # This returns the translation for <tt>:foo</tt> or <tt>default</tt> if no translation was found:
+    #   I18n.t :foo, :default => 'default'
+    #
+    # This returns the translation for <tt>:foo</tt> or the translation for <tt>:bar</tt> if no
+    # translation for <tt>:foo</tt> was found:
+    #   I18n.t :foo, :default => :bar
+    #
+    # Returns the translation for <tt>:foo</tt> or the translation for <tt>:bar</tt>
+    # or <tt>default</tt> if no translations for <tt>:foo</tt> and <tt>:bar</tt> were found.
+    #   I18n.t :foo, :default => [:bar, 'default']
+    #
+    # <b>BULK LOOKUP</b>
+    #
+    # This returns an array with the translations for <tt>:foo</tt> and <tt>:bar</tt>.
+    #   I18n.t [:foo, :bar]
+    #
+    # Can be used with dot-separated nested keys:
+    #   I18n.t [:'baz.foo', :'baz.bar']
+    #
+    # Which is the same as using a scope option:
+    #   I18n.t [:foo, :bar], :scope => :baz
+    def translate(key, options = {})
+      locale = options.delete(:locale) || I18n.locale
+      backend.translate(locale, key, options)
+    rescue I18n::ArgumentError => e
+      raise e if options[:raise]
+      send(@@exception_handler, e, locale, key, options)
+    end
+    alias :t :translate
+
+    # Localizes certain objects, such as dates and numbers to local formatting.
+    def localize(object, options = {})
+      locale = options[:locale] || I18n.locale
+      format = options[:format] || :default
+      backend.localize(locale, object, format)
+    end
+    alias :l :localize
+
+  protected
+    # Handles exceptions raised in the backend. All exceptions except for
+    # MissingTranslationData exceptions are re-raised. When a MissingTranslationData
+    # was caught and the option :raise is not set the handler returns an error
+    # message string containing the key/scope.
+    def default_exception_handler(exception, locale, key, options)
+      return exception.message if MissingTranslationData === exception
+      raise exception
+    end
+
+    # Merges the given locale, key and scope into a single array of keys.
+    # Splits keys that contain dots into multiple keys. Makes sure all
+    # keys are Symbols.
+    def normalize_translation_keys(locale, key, scope)
+      keys = [locale] + Array(scope) + [key]
+      keys = keys.map { |k| k.to_s.split(/\./) }
+      keys.flatten.map { |k| k.to_sym }
+    end
+  end
+end
diff --git a/activesupport/lib/active_support/vendor/i18n-0.1.3/lib/i18n/backend/simple.rb b/activesupport/lib/active_support/vendor/i18n-0.1.3/lib/i18n/backend/simple.rb
new file mode 100644
index 0000000000..c32cc76f34
--- /dev/null
+++ b/activesupport/lib/active_support/vendor/i18n-0.1.3/lib/i18n/backend/simple.rb
@@ -0,0 +1,215 @@
+require 'i18n/exceptions'
+
+module I18n
+  module Backend
+    class Simple
+      INTERPOLATION_RESERVED_KEYS = %w(scope default)
+      MATCH = /(\\\\)?\{\{([^\}]+)\}\}/
+
+      # Accepts a list of paths to translation files. Loads translations from
+      # plain Ruby (*.rb) or YAML files (*.yml). See #load_rb and #load_yml
+      # for details.
+      def load_translations(*filenames)
+        filenames.each { |filename| load_file(filename) }
+      end
+
+      # Stores translations for the given locale in memory.
+      # This uses a deep merge for the translations hash, so existing
+      # translations will be overwritten by new ones only at the deepest
+      # level of the hash.
+      def store_translations(locale, data)
+        merge_translations(locale, data)
+      end
+
+      def translate(locale, key, options = {})
+        raise InvalidLocale.new(locale) if locale.nil?
+        return key.map { |k| translate(locale, k, options) } if key.is_a? Array
+
+        reserved = :scope, :default
+        count, scope, default = options.values_at(:count, *reserved)
+        options.delete(:default)
+        values = options.reject { |name, value| reserved.include?(name) }
+
+        entry = lookup(locale, key, scope)
+        if entry.nil?
+          entry = default(locale, default, options)
+          if entry.nil?
+            raise(I18n::MissingTranslationData.new(locale, key, options))
+          end
+        end
+        entry = pluralize(locale, entry, count)
+        entry = interpolate(locale, entry, values)
+        entry
+      end
+
+      # Acts the same as +strftime+, but returns a localized version of the
+      # formatted date string. Takes a key from the date/time formats
+      # translations as a format argument (<em>e.g.</em>, <tt>:short</tt> in <tt>:'date.formats'</tt>).
+      def localize(locale, object, format = :default)
+        raise ArgumentError, "Object must be a Date, DateTime or Time object. #{object.inspect} given." unless object.respond_to?(:strftime)
+
+        type = object.respond_to?(:sec) ? 'time' : 'date'
+        # TODO only translate these if format is a String?
+        formats = translate(locale, :"#{type}.formats")
+        format = formats[format.to_sym] if formats && formats[format.to_sym]
+        # TODO raise exception unless format found?
+        format = format.to_s.dup
+
+        # TODO only translate these if the format string is actually present
+        # TODO check which format strings are present, then bulk translate then, then replace them
+        format.gsub!(/%a/, translate(locale, :"date.abbr_day_names")[object.wday])
+        format.gsub!(/%A/, translate(locale, :"date.day_names")[object.wday])
+        format.gsub!(/%b/, translate(locale, :"date.abbr_month_names")[object.mon])
+        format.gsub!(/%B/, translate(locale, :"date.month_names")[object.mon])
+        format.gsub!(/%p/, translate(locale, :"time.#{object.hour < 12 ? :am : :pm}")) if object.respond_to? :hour
+        object.strftime(format)
+      end
+
+      def initialized?
+        @initialized ||= false
+      end
+
+      # Returns an array of locales for which translations are available
+      def available_locales
+        init_translations unless initialized?
+        translations.keys
+      end
+
+      def reload!
+        @initialized = false
+        @translations = nil
+      end
+
+      protected
+        def init_translations
+          load_translations(*I18n.load_path.flatten)
+          @initialized = true
+        end
+
+        def translations
+          @translations ||= {}
+        end
+
+        # Looks up a translation from the translations hash. Returns nil if
+        # eiher key is nil, or locale, scope or key do not exist as a key in the
+        # nested translations hash. Splits keys or scopes containing dots
+        # into multiple keys, i.e. <tt>currency.format</tt> is regarded the same as
+        # <tt>%w(currency format)</tt>.
+        def lookup(locale, key, scope = [])
+          return unless key
+          init_translations unless initialized?
+          keys = I18n.send(:normalize_translation_keys, locale, key, scope)
+          keys.inject(translations) do |result, k|
+            if (x = result[k.to_sym]).nil?
+              return nil
+            else
+              x
+            end
+          end
+        end
+
+        # Evaluates a default translation.
+        # If the given default is a String it is used literally. If it is a Symbol
+        # it will be translated with the given options. If it is an Array the first
+        # translation yielded will be returned.
+        #
+        # <em>I.e.</em>, <tt>default(locale, [:foo, 'default'])</tt> will return +default+ if
+        # <tt>translate(locale, :foo)</tt> does not yield a result.
+        def default(locale, default, options = {})
+          case default
+            when String then default
+            when Symbol then translate locale, default, options
+            when Array  then default.each do |obj|
+              result = default(locale, obj, options.dup) and return result
+            end and nil
+          end
+        rescue MissingTranslationData
+          nil
+        end
+
+        # Picks a translation from an array according to English pluralization
+        # rules. It will pick the first translation if count is not equal to 1
+        # and the second translation if it is equal to 1. Other backends can
+        # implement more flexible or complex pluralization rules.
+        def pluralize(locale, entry, count)
+          return entry unless entry.is_a?(Hash) and count
+          # raise InvalidPluralizationData.new(entry, count) unless entry.is_a?(Hash)
+          key = :zero if count == 0 && entry.has_key?(:zero)
+          key ||= count == 1 ? :one : :other
+          raise InvalidPluralizationData.new(entry, count) unless entry.has_key?(key)
+          entry[key]
+        end
+
+        # Interpolates values into a given string.
+        #
+        #   interpolate "file {{file}} opened by \\{{user}}", :file => 'test.txt', :user => 'Mr. X'
+        #   # => "file test.txt opened by {{user}}"
+        #
+        # Note that you have to double escape the <tt>\\</tt> when you want to escape
+        # the <tt>{{...}}</tt> key in a string (once for the string and once for the
+        # interpolation).
+        def interpolate(locale, string, values = {})
+          return string unless string.is_a?(String)
+
+          string.gsub(MATCH) do
+            escaped, pattern, key = $1, $2, $2.to_sym
+
+            if escaped
+              pattern
+            elsif INTERPOLATION_RESERVED_KEYS.include?(pattern)
+              raise ReservedInterpolationKey.new(pattern, string)
+            elsif !values.include?(key)
+              raise MissingInterpolationArgument.new(pattern, string)
+            else
+              values[key].to_s
+            end
+          end
+        end
+
+        # Loads a single translations file by delegating to #load_rb or
+        # #load_yml depending on the file extension and directly merges the
+        # data to the existing translations. Raises I18n::UnknownFileType
+        # for all other file extensions.
+        def load_file(filename)
+          type = File.extname(filename).tr('.', '').downcase
+          raise UnknownFileType.new(type, filename) unless respond_to?(:"load_#{type}")
+          data = send :"load_#{type}", filename # TODO raise a meaningful exception if this does not yield a Hash
+          data.each { |locale, d| merge_translations(locale, d) }
+        end
+
+        # Loads a plain Ruby translations file. eval'ing the file must yield
+        # a Hash containing translation data with locales as toplevel keys.
+        def load_rb(filename)
+          eval(IO.read(filename), binding, filename)
+        end
+
+        # Loads a YAML translations file. The data must have locales as
+        # toplevel keys.
+        def load_yml(filename)
+          require 'yaml' unless defined? :YAML
+          YAML::load(IO.read(filename))
+        end
+
+        # Deep merges the given translations hash with the existing translations
+        # for the given locale
+        def merge_translations(locale, data)
+          locale = locale.to_sym
+          translations[locale] ||= {}
+          data = deep_symbolize_keys(data)
+
+          # deep_merge by Stefan Rusterholz, see http://www.ruby-forum.com/topic/142809
+          merger = proc { |key, v1, v2| Hash === v1 && Hash === v2 ? v1.merge(v2, &merger) : v2 }
+          translations[locale].merge!(data, &merger)
+        end
+
+        # Return a new hash with all keys and nested keys converted to symbols.
+        def deep_symbolize_keys(hash)
+          hash.inject({}) { |result, (key, value)|
+            value = deep_symbolize_keys(value) if value.is_a? Hash
+            result[(key.to_sym rescue key) || key] = value
+            result
+          }
+        end
+    end
+  end
+end
diff --git a/activesupport/lib/active_support/vendor/i18n-0.1.3/lib/i18n/exceptions.rb b/activesupport/lib/active_support/vendor/i18n-0.1.3/lib/i18n/exceptions.rb
new file mode 100644
index 0000000000..6897055d6d
--- /dev/null
+++ b/activesupport/lib/active_support/vendor/i18n-0.1.3/lib/i18n/exceptions.rb
@@ -0,0 +1,53 @@
+module I18n
+  class ArgumentError < ::ArgumentError; end
+
+  class InvalidLocale < ArgumentError
+    attr_reader :locale
+    def initialize(locale)
+      @locale = locale
+      super "#{locale.inspect} is not a valid locale"
+    end
+  end
+
+  class MissingTranslationData < ArgumentError
+    attr_reader :locale, :key, :options
+    def initialize(locale, key, options)
+      @key, @locale, @options = key, locale, options
+      keys = I18n.send(:normalize_translation_keys, locale, key, options[:scope])
+      keys << 'no key' if keys.size < 2
+      super "translation missing: #{keys.join(', ')}"
+    end
+  end
+
+  class InvalidPluralizationData < ArgumentError
+    attr_reader :entry, :count
+    def initialize(entry, count)
+      @entry, @count = entry, count
+      super "translation data #{entry.inspect} can not be used with :count => #{count}"
+    end
+  end
+
+  class MissingInterpolationArgument < ArgumentError
+    attr_reader :key, :string
+    def initialize(key, string)
+      @key, @string = key, string
+      super "interpolation argument #{key} missing in #{string.inspect}"
+    end
+  end
+
+  class ReservedInterpolationKey < ArgumentError
+    attr_reader :key, :string
+    def initialize(key, string)
+      @key, @string = key, string
+      super "reserved key #{key.inspect} used in #{string.inspect}"
+    end
+  end
+
+  class UnknownFileType < ArgumentError
+    attr_reader :type, :filename
+    def initialize(type, filename)
+      @type, @filename = type, filename
+      super "can not load translations from #{filename}, the file type #{type} is not known"
+    end
+  end
+end
diff --git a/activesupport/lib/active_support/vendor/i18n-0.1.3/test/all.rb b/activesupport/lib/active_support/vendor/i18n-0.1.3/test/all.rb
new file mode 100644
index 0000000000..353712da49
--- /dev/null
+++ b/activesupport/lib/active_support/vendor/i18n-0.1.3/test/all.rb
@@ -0,0 +1,5 @@
+dir = File.dirname(__FILE__)
+require dir + '/i18n_test.rb'
+require dir + '/simple_backend_test.rb'
+require dir + '/i18n_exceptions_test.rb'
+# *require* dir + '/custom_backend_test.rb'
\ No newline at end of file
diff --git a/activesupport/lib/active_support/vendor/i18n-0.1.3/test/i18n_exceptions_test.rb b/activesupport/lib/active_support/vendor/i18n-0.1.3/test/i18n_exceptions_test.rb
new file mode 100644
index 0000000000..4e78e71b34
--- /dev/null
+++ b/activesupport/lib/active_support/vendor/i18n-0.1.3/test/i18n_exceptions_test.rb
@@ -0,0 +1,99 @@
+$:.unshift "lib"
+
+require 'rubygems'
+require 'test/unit'
+require 'i18n'
+require 'active_support'
+
+class I18nExceptionsTest < Test::Unit::TestCase
+  def test_invalid_locale_stores_locale
+    force_invalid_locale
+  rescue I18n::ArgumentError => e
+    assert_nil e.locale
+  end
+
+  def test_invalid_locale_message
+    force_invalid_locale
+  rescue I18n::ArgumentError => e
+    assert_equal 'nil is not a valid locale', e.message
+  end
+
+  def test_missing_translation_data_stores_locale_key_and_options
+    force_missing_translation_data
+  rescue I18n::ArgumentError => e
+    options = {:scope => :bar}
+    assert_equal 'de', e.locale
+    assert_equal :foo, e.key
+    assert_equal options, e.options
+  end
+
+  def test_missing_translation_data_message
+    force_missing_translation_data
+  rescue I18n::ArgumentError => e
+    assert_equal 'translation missing: de, bar, foo', e.message
+  end
+
+  def test_invalid_pluralization_data_stores_entry_and_count
+    force_invalid_pluralization_data
+  rescue I18n::ArgumentError => e
+    assert_equal [:bar], e.entry
+    assert_equal 1, e.count
+  end
+
+  def test_invalid_pluralization_data_message
+    force_invalid_pluralization_data
+  rescue I18n::ArgumentError => e
+    assert_equal 'translation data [:bar] can not be used with :count => 1', e.message
+  end
+
+  def test_missing_interpolation_argument_stores_key_and_string
+    force_missing_interpolation_argument
+  rescue I18n::ArgumentError => e
+    assert_equal 'bar', e.key
+    assert_equal "{{bar}}", e.string
+  end
+
+  def test_missing_interpolation_argument_message
+    force_missing_interpolation_argument
+  rescue I18n::ArgumentError => e
+    assert_equal 'interpolation argument bar missing in "{{bar}}"', e.message
+  end
+
+  def test_reserved_interpolation_key_stores_key_and_string
+    force_reserved_interpolation_key
+  rescue I18n::ArgumentError => e
+    assert_equal 'scope', e.key
+    assert_equal "{{scope}}", e.string
+  end
+
+  def test_reserved_interpolation_key_message
+    force_reserved_interpolation_key
+  rescue I18n::ArgumentError => e
+    assert_equal 'reserved key "scope" used in "{{scope}}"', e.message
+  end
+
+  private
+    def force_invalid_locale
+      I18n.backend.translate nil, :foo
+    end
+
+    def force_missing_translation_data
+      I18n.backend.store_translations 'de', :bar => nil
+      I18n.backend.translate 'de', :foo, :scope => :bar
+    end
+
+    def force_invalid_pluralization_data
+      I18n.backend.store_translations 'de', :foo => [:bar]
+      I18n.backend.translate 'de', :foo, :count => 1
+    end
+
+    def force_missing_interpolation_argument
+      I18n.backend.store_translations 'de', :foo => "{{bar}}"
+      I18n.backend.translate 'de', :foo, :baz => 'baz'
+    end
+
+    def force_reserved_interpolation_key
+      I18n.backend.store_translations 'de', :foo => "{{scope}}"
+      I18n.backend.translate 'de', :foo, :baz => 'baz'
+    end
+end
\ No newline at end of file
diff --git a/activesupport/lib/active_support/vendor/i18n-0.1.3/test/i18n_test.rb b/activesupport/lib/active_support/vendor/i18n-0.1.3/test/i18n_test.rb
new file mode 100644
index 0000000000..2835ec4eab
--- /dev/null
+++ b/activesupport/lib/active_support/vendor/i18n-0.1.3/test/i18n_test.rb
@@ -0,0 +1,124 @@
+$:.unshift "lib"
+
+require 'rubygems'
+require 'test/unit'
+require 'i18n'
+require 'active_support'
+
+class I18nTest < Test::Unit::TestCase
+  def setup
+    I18n.backend.store_translations :'en', {
+      :currency => {
+        :format => {
+          :separator => '.',
+          :delimiter => ',',
+        }
+      }
+    }
+  end
+
+  def test_uses_simple_backend_set_by_default
+    assert I18n.backend.is_a?(I18n::Backend::Simple)
+  end
+
+  def test_can_set_backend
+    assert_nothing_raised{ I18n.backend = self }
+    assert_equal self, I18n.backend
+    I18n.backend = I18n::Backend::Simple.new
+  end
+
+  def test_uses_en_us_as_default_locale_by_default
+    assert_equal 'en', I18n.default_locale
+  end
+
+  def test_can_set_default_locale
+    assert_nothing_raised{ I18n.default_locale = 'de' }
+    assert_equal 'de', I18n.default_locale
+    I18n.default_locale = 'en'
+  end
+
+  def test_uses_default_locale_as_locale_by_default
+    assert_equal I18n.default_locale, I18n.locale
+  end
+
+  def test_can_set_locale_to_thread_current
+    assert_nothing_raised{ I18n.locale = 'de' }
+    assert_equal 'de', I18n.locale
+    assert_equal 'de', Thread.current[:locale]
+    I18n.locale = 'en'
+  end
+
+  def test_can_set_exception_handler
+    assert_nothing_raised{ I18n.exception_handler = :custom_exception_handler }
+    I18n.exception_handler = :default_exception_handler # revert it
+  end
+
+  def test_uses_custom_exception_handler
+    I18n.exception_handler = :custom_exception_handler
+    I18n.expects(:custom_exception_handler)
+    I18n.translate :bogus
+    I18n.exception_handler = :default_exception_handler # revert it
+  end
+
+  def test_delegates_translate_to_backend
+    I18n.backend.expects(:translate).with 'de', :foo, {}
+    I18n.translate :foo, :locale => 'de'
+  end
+
+  def test_delegates_localize_to_backend
+    I18n.backend.expects(:localize).with 'de', :whatever, :default
+    I18n.localize :whatever, :locale => 'de'
+  end
+
+  def test_translate_given_no_locale_uses_i18n_locale
+    I18n.backend.expects(:translate).with 'en', :foo, {}
+    I18n.translate :foo
+  end
+
+  def test_translate_on_nested_symbol_keys_works
+    assert_equal ".", I18n.t(:'currency.format.separator')
+  end
+
+  def test_translate_with_nested_string_keys_works
+    assert_equal ".", I18n.t('currency.format.separator')
+  end
+
+  def test_translate_with_array_as_scope_works
+    assert_equal ".", I18n.t(:separator, :scope => ['currency.format'])
+  end
+
+  def test_translate_with_array_containing_dot_separated_strings_as_scope_works
+    assert_equal ".", I18n.t(:separator, :scope => ['currency.format'])
+  end
+
+  def test_translate_with_key_array_and_dot_separated_scope_works
+    assert_equal [".", ","], I18n.t(%w(separator delimiter), :scope => 'currency.format')
+  end
+
+  def test_translate_with_dot_separated_key_array_and_scope_works
+    assert_equal [".", ","], I18n.t(%w(format.separator format.delimiter), :scope => 'currency')
+  end
+
+  def test_translate_with_options_using_scope_works
+    I18n.backend.expects(:translate).with('de', :precision, :scope => :"currency.format")
+    I18n.with_options :locale => 'de', :scope => :'currency.format' do |locale|
+      locale.t :precision
+    end
+  end
+
+  # def test_translate_given_no_args_raises_missing_translation_data
+  #   assert_equal "translation missing: en, no key", I18n.t
+  # end
+
+  def test_translate_given_a_bogus_key_raises_missing_translation_data
+    assert_equal "translation missing: en, bogus", I18n.t(:bogus)
+  end
+
+  def test_localize_nil_raises_argument_error
+    assert_raise(I18n::ArgumentError) { I18n.l nil }
+  end
+
+  def test_localize_object_raises_argument_error
+    assert_raise(I18n::ArgumentError) { I18n.l Object.new }
+  end
+end
diff --git a/activesupport/lib/active_support/vendor/i18n-0.1.3/test/locale/en.rb b/activesupport/lib/active_support/vendor/i18n-0.1.3/test/locale/en.rb
new file mode 100644
index 0000000000..6044ce10d9
--- /dev/null
+++ b/activesupport/lib/active_support/vendor/i18n-0.1.3/test/locale/en.rb
@@ -0,0 +1 @@
+{:'en-Ruby' => {:foo => {:bar => "baz"}}}
\ No newline at end of file
diff --git a/activesupport/lib/active_support/vendor/i18n-0.1.3/test/locale/en.yml b/activesupport/lib/active_support/vendor/i18n-0.1.3/test/locale/en.yml
new file mode 100644
index 0000000000..0b298c9c0e
--- /dev/null
+++ b/activesupport/lib/active_support/vendor/i18n-0.1.3/test/locale/en.yml
@@ -0,0 +1,3 @@
+en-Yaml:
+  foo:
+    bar: baz
\ No newline at end of file
diff --git a/activesupport/lib/active_support/vendor/i18n-0.1.3/test/simple_backend_test.rb b/activesupport/lib/active_support/vendor/i18n-0.1.3/test/simple_backend_test.rb
new file mode 100644
index 0000000000..a1696c77f6
--- /dev/null
+++ b/activesupport/lib/active_support/vendor/i18n-0.1.3/test/simple_backend_test.rb
@@ -0,0 +1,567 @@
+# encoding: utf-8
+$:.unshift "lib"
+
+require 'rubygems'
+require 'test/unit'
+require 'i18n'
+require 'time'
+require 'yaml'
+
+module I18nSimpleBackendTestSetup
+  def setup_backend
+    # backend_reset_translations!
+    @backend = I18n::Backend::Simple.new
+    @backend.store_translations 'en', :foo => {:bar => 'bar', :baz => 'baz'}
+    @locale_dir = File.dirname(__FILE__) + '/locale'
+  end
+  alias :setup :setup_backend
+
+  # def backend_reset_translations!
+  #   I18n::Backend::Simple::ClassMethods.send :class_variable_set, :@@translations, {}
+  # end
+
+  def backend_get_translations
+    # I18n::Backend::Simple::ClassMethods.send :class_variable_get, :@@translations
+    @backend.instance_variable_get :@translations
+  end
+
+  def add_datetime_translations
+    @backend.store_translations :'de', {
+      :date => {
+        :formats => {
+          :default => "%d.%m.%Y",
+          :short => "%d. %b",
+          :long => "%d. %B %Y",
+        },
+        :day_names => %w(Sonntag Montag Dienstag Mittwoch Donnerstag Freitag Samstag),
+        :abbr_day_names => %w(So Mo Di Mi Do Fr  Sa),
+        :month_names => %w(Januar Februar März April Mai Juni Juli August September Oktober November Dezember).unshift(nil),
+        :abbr_month_names => %w(Jan Feb Mar Apr Mai Jun Jul Aug Sep Okt Nov Dez).unshift(nil),
+        :order => [:day, :month, :year]
+      },
+      :time => {
+        :formats => {
+          :default => "%a, %d. %b %Y %H:%M:%S %z",
+          :short => "%d. %b %H:%M",
+          :long => "%d. %B %Y %H:%M",
+        },
+        :am => 'am',
+        :pm => 'pm'
+      },
+      :datetime => {
+        :distance_in_words => {
+          :half_a_minute => 'half a minute',
+          :less_than_x_seconds => {
+            :one => 'less than 1 second',
+            :other => 'less than {{count}} seconds'
+          },
+          :x_seconds => {
+            :one => '1 second',
+            :other => '{{count}} seconds'
+          },
+          :less_than_x_minutes => {
+            :one => 'less than a minute',
+            :other => 'less than {{count}} minutes'
+          },
+          :x_minutes => {
+            :one => '1 minute',
+            :other => '{{count}} minutes'
+          },
+          :about_x_hours => {
+            :one => 'about 1 hour',
+            :other => 'about {{count}} hours'
+          },
+          :x_days => {
+            :one => '1 day',
+            :other => '{{count}} days'
+          },
+          :about_x_months => {
+            :one => 'about 1 month',
+            :other => 'about {{count}} months'
+          },
+          :x_months => {
+            :one => '1 month',
+            :other => '{{count}} months'
+          },
+          :about_x_years => {
+            :one => 'about 1 year',
+            :other => 'about {{count}} year'
+          },
+          :over_x_years => {
+            :one => 'over 1 year',
+            :other => 'over {{count}} years'
+          }
+        }
+      }
+    }
+  end
+end
+
+class I18nSimpleBackendTranslationsTest < Test::Unit::TestCase
+  include I18nSimpleBackendTestSetup
+
+  def test_store_translations_adds_translations # no, really :-)
+    @backend.store_translations :'en', :foo => 'bar'
+    assert_equal Hash[:'en', {:foo => 'bar'}], backend_get_translations
+  end
+
+  def test_store_translations_deep_merges_translations
+    @backend.store_translations :'en', :foo => {:bar => 'bar'}
+    @backend.store_translations :'en', :foo => {:baz => 'baz'}
+    assert_equal Hash[:'en', {:foo => {:bar => 'bar', :baz => 'baz'}}], backend_get_translations
+  end
+
+  def test_store_translations_forces_locale_to_sym
+    @backend.store_translations 'en', :foo => 'bar'
+    assert_equal Hash[:'en', {:foo => 'bar'}], backend_get_translations
+  end
+
+  def test_store_translations_converts_keys_to_symbols
+    # backend_reset_translations!
+    @backend.store_translations 'en', 'foo' => {'bar' => 'bar', 'baz' => 'baz'}
+    assert_equal Hash[:'en', {:foo => {:bar => 'bar', :baz => 'baz'}}], backend_get_translations
+  end
+end
+
+class I18nSimpleBackendAvailableLocalesTest < Test::Unit::TestCase
+  def test_available_locales
+    @backend = I18n::Backend::Simple.new
+    @backend.store_translations 'de', :foo => 'bar'
+    @backend.store_translations 'en', :foo => 'foo'
+
+    assert_equal ['de', 'en'], @backend.available_locales.map{|locale| locale.to_s }.sort
+  end
+end
+
+class I18nSimpleBackendTranslateTest < Test::Unit::TestCase
+  include I18nSimpleBackendTestSetup
+
+  def test_translate_calls_lookup_with_locale_given
+    @backend.expects(:lookup).with('de', :bar, [:foo]).returns 'bar'
+    @backend.translate 'de', :bar, :scope => [:foo]
+  end
+
+  def test_given_no_keys_it_returns_the_default
+    assert_equal 'default', @backend.translate('en', nil, :default => 'default')
+  end
+
+  def test_translate_given_a_symbol_as_a_default_translates_the_symbol
+    assert_equal 'bar', @backend.translate('en', nil, :scope => [:foo], :default => :bar)
+  end
+
+  def test_translate_given_an_array_as_default_uses_the_first_match
+    assert_equal 'bar', @backend.translate('en', :does_not_exist, :scope => [:foo], :default => [:does_not_exist_2, :bar])
+  end
+
+  def test_translate_given_an_array_of_inexistent_keys_it_raises_missing_translation_data
+    assert_raise I18n::MissingTranslationData do
+      @backend.translate('en', :does_not_exist, :scope => [:foo], :default => [:does_not_exist_2, :does_not_exist_3])
+    end
+  end
+
+  def test_translate_an_array_of_keys_translates_all_of_them
+    assert_equal %w(bar baz), @backend.translate('en', [:bar, :baz], :scope => [:foo])
+  end
+
+  def test_translate_calls_pluralize
+    @backend.expects(:pluralize).with 'en', 'bar', 1
+    @backend.translate 'en', :bar, :scope => [:foo], :count => 1
+  end
+
+  def test_translate_calls_interpolate
+    @backend.expects(:interpolate).with 'en', 'bar', {}
+    @backend.translate 'en', :bar, :scope => [:foo]
+  end
+
+  def test_translate_calls_interpolate_including_count_as_a_value
+    @backend.expects(:interpolate).with 'en', 'bar', {:count => 1}
+    @backend.translate 'en', :bar, :scope => [:foo], :count => 1
+  end
+
+  def test_translate_given_nil_as_a_locale_raises_an_argument_error
+    assert_raise(I18n::InvalidLocale){ @backend.translate nil, :bar }
+  end
+
+  def test_translate_with_a_bogus_key_and_no_default_raises_missing_translation_data
+    assert_raise(I18n::MissingTranslationData){ @backend.translate 'de', :bogus }
+  end
+end
+
+class I18nSimpleBackendLookupTest < Test::Unit::TestCase
+  include I18nSimpleBackendTestSetup
+
+  # useful because this way we can use the backend with no key for interpolation/pluralization
+  def test_lookup_given_nil_as_a_key_returns_nil
+    assert_nil @backend.send(:lookup, 'en', nil)
+  end
+
+  def test_lookup_given_nested_keys_looks_up_a_nested_hash_value
+    assert_equal 'bar', @backend.send(:lookup, 'en', :bar, [:foo])
+  end
+end
+
+class I18nSimpleBackendPluralizeTest < Test::Unit::TestCase
+  include I18nSimpleBackendTestSetup
+
+  def test_pluralize_given_nil_returns_the_given_entry
+    entry = {:one => 'bar', :other => 'bars'}
+    assert_equal entry, @backend.send(:pluralize, nil, entry, nil)
+  end
+
+  def test_pluralize_given_0_returns_zero_string_if_zero_key_given
+    assert_equal 'zero', @backend.send(:pluralize, nil, {:zero => 'zero', :one => 'bar', :other => 'bars'}, 0)
+  end
+
+  def test_pluralize_given_0_returns_plural_string_if_no_zero_key_given
+    assert_equal 'bars', @backend.send(:pluralize, nil, {:one => 'bar', :other => 'bars'}, 0)
+  end
+
+  def test_pluralize_given_1_returns_singular_string
+    assert_equal 'bar', @backend.send(:pluralize, nil, {:one => 'bar', :other => 'bars'}, 1)
+  end
+
+  def test_pluralize_given_2_returns_plural_string
+    assert_equal 'bars', @backend.send(:pluralize, nil, {:one => 'bar', :other => 'bars'}, 2)
+  end
+
+  def test_pluralize_given_3_returns_plural_string
+    assert_equal 'bars', @backend.send(:pluralize, nil, {:one => 'bar', :other => 'bars'}, 3)
+  end
+
+  def test_interpolate_given_incomplete_pluralization_data_raises_invalid_pluralization_data
+    assert_raise(I18n::InvalidPluralizationData){ @backend.send(:pluralize, nil, {:one => 'bar'}, 2) }
+  end
+
+  # def test_interpolate_given_a_string_raises_invalid_pluralization_data
+  #   assert_raise(I18n::InvalidPluralizationData){ @backend.send(:pluralize, nil, 'bar', 2) }
+  # end
+  #
+  # def test_interpolate_given_an_array_raises_invalid_pluralization_data
+  #   assert_raise(I18n::InvalidPluralizationData){ @backend.send(:pluralize, nil, ['bar'], 2) }
+  # end
+end
+
+class I18nSimpleBackendInterpolateTest < Test::Unit::TestCase
+  include I18nSimpleBackendTestSetup
+
+  def test_interpolate_given_a_value_hash_interpolates_the_values_to_the_string
+    assert_equal 'Hi David!', @backend.send(:interpolate, nil, 'Hi {{name}}!', :name => 'David')
+  end
+
+  def test_interpolate_given_a_value_hash_interpolates_into_unicode_string
+    assert_equal 'Häi David!', @backend.send(:interpolate, nil, 'Häi {{name}}!', :name => 'David')
+  end
+
+  def test_interpolate_given_an_unicode_value_hash_interpolates_to_the_string
+    assert_equal 'Hi ゆきひろ!', @backend.send(:interpolate, nil, 'Hi {{name}}!', :name => 'ゆきひろ')
+  end
+
+  def test_interpolate_given_an_unicode_value_hash_interpolates_into_unicode_string
+    assert_equal 'こんにちは、ゆきひろさん!', @backend.send(:interpolate, nil, 'こんにちは、{{name}}さん!', :name => 'ゆきひろ')
+  end
+
+  if Kernel.const_defined?(:Encoding)
+    def test_interpolate_given_a_non_unicode_multibyte_value_hash_interpolates_into_a_string_with_the_same_encoding
+      assert_equal euc_jp('Hi ゆきひろ!'), @backend.send(:interpolate, nil, 'Hi {{name}}!', :name => euc_jp('ゆきひろ'))
+    end
+
+    def test_interpolate_given_an_unicode_value_hash_into_a_non_unicode_multibyte_string_raises_encoding_compatibility_error
+      assert_raise(Encoding::CompatibilityError) do
+        @backend.send(:interpolate, nil, euc_jp('こんにちは、{{name}}さん!'), :name => 'ゆきひろ')
+      end
+    end
+
+    def test_interpolate_given_a_non_unicode_multibyte_value_hash_into_an_unicode_string_raises_encoding_compatibility_error
+      assert_raise(Encoding::CompatibilityError) do
+        @backend.send(:interpolate, nil, 'こんにちは、{{name}}さん!', :name => euc_jp('ゆきひろ'))
+      end
+    end
+  end
+
+  def test_interpolate_given_nil_as_a_string_returns_nil
+    assert_nil @backend.send(:interpolate, nil, nil, :name => 'David')
+  end
+
+  def test_interpolate_given_an_non_string_as_a_string_returns_nil
+    assert_equal [], @backend.send(:interpolate, nil, [], :name => 'David')
+  end
+
+  def test_interpolate_given_a_values_hash_with_nil_values_interpolates_the_string
+    assert_equal 'Hi !', @backend.send(:interpolate, nil, 'Hi {{name}}!', {:name => nil})
+  end
+
+  def test_interpolate_given_an_empty_values_hash_raises_missing_interpolation_argument
+    assert_raise(I18n::MissingInterpolationArgument) { @backend.send(:interpolate, nil, 'Hi {{name}}!', {}) }
+  end
+
+  def test_interpolate_given_a_string_containing_a_reserved_key_raises_reserved_interpolation_key
+    assert_raise(I18n::ReservedInterpolationKey) { @backend.send(:interpolate, nil, '{{default}}', {:default => nil}) }
+  end
+  
+  private
+  
+  def euc_jp(string)
+    string.encode!(Encoding::EUC_JP)
+  end
+end
+
+class I18nSimpleBackendLocalizeDateTest < Test::Unit::TestCase
+  include I18nSimpleBackendTestSetup
+
+  def setup
+    @backend = I18n::Backend::Simple.new
+    add_datetime_translations
+    @date = Date.new 2008, 1, 1
+  end
+
+  def test_translate_given_the_short_format_it_uses_it
+    assert_equal '01. Jan', @backend.localize('de', @date, :short)
+  end
+
+  def test_translate_given_the_long_format_it_uses_it
+    assert_equal '01. Januar 2008', @backend.localize('de', @date, :long)
+  end
+
+  def test_translate_given_the_default_format_it_uses_it
+    assert_equal '01.01.2008', @backend.localize('de', @date, :default)
+  end
+
+  def test_translate_given_a_day_name_format_it_returns_a_day_name
+    assert_equal 'Dienstag', @backend.localize('de', @date, '%A')
+  end
+
+  def test_translate_given_an_abbr_day_name_format_it_returns_an_abbrevated_day_name
+    assert_equal 'Di', @backend.localize('de', @date, '%a')
+  end
+
+  def test_translate_given_a_month_name_format_it_returns_a_month_name
+    assert_equal 'Januar', @backend.localize('de', @date, '%B')
+  end
+
+  def test_translate_given_an_abbr_month_name_format_it_returns_an_abbrevated_month_name
+    assert_equal 'Jan', @backend.localize('de', @date, '%b')
+  end
+
+  def test_translate_given_no_format_it_does_not_fail
+    assert_nothing_raised{ @backend.localize 'de', @date }
+  end
+
+  def test_translate_given_an_unknown_format_it_does_not_fail
+    assert_nothing_raised{ @backend.localize 'de', @date, '%x' }
+  end
+
+  def test_localize_nil_raises_argument_error
+    assert_raise(I18n::ArgumentError) { @backend.localize 'de', nil }
+  end
+
+  def test_localize_object_raises_argument_error
+    assert_raise(I18n::ArgumentError) { @backend.localize 'de', Object.new }
+  end
+end
+
+class I18nSimpleBackendLocalizeDateTimeTest < Test::Unit::TestCase
+  include I18nSimpleBackendTestSetup
+
+  def setup
+    @backend = I18n::Backend::Simple.new
+    add_datetime_translations
+    @morning = DateTime.new 2008, 1, 1, 6
+    @evening = DateTime.new 2008, 1, 1, 18
+  end
+
+  def test_translate_given_the_short_format_it_uses_it
+    assert_equal '01. Jan 06:00', @backend.localize('de', @morning, :short)
+  end
+
+  def test_translate_given_the_long_format_it_uses_it
+    assert_equal '01. Januar 2008 06:00', @backend.localize('de', @morning, :long)
+  end
+
+  def test_translate_given_the_default_format_it_uses_it
+    assert_equal 'Di, 01. Jan 2008 06:00:00 +0000', @backend.localize('de', @morning, :default)
+  end
+
+  def test_translate_given_a_day_name_format_it_returns_the_correct_day_name
+    assert_equal 'Dienstag', @backend.localize('de', @morning, '%A')
+  end
+
+  def test_translate_given_an_abbr_day_name_format_it_returns_the_correct_abbrevated_day_name
+    assert_equal 'Di', @backend.localize('de', @morning, '%a')
+  end
+
+  def test_translate_given_a_month_name_format_it_returns_the_correct_month_name
+    assert_equal 'Januar', @backend.localize('de', @morning, '%B')
+  end
+
+  def test_translate_given_an_abbr_month_name_format_it_returns_the_correct_abbrevated_month_name
+    assert_equal 'Jan', @backend.localize('de', @morning, '%b')
+  end
+
+  def test_translate_given_a_meridian_indicator_format_it_returns_the_correct_meridian_indicator
+    assert_equal 'am', @backend.localize('de', @morning, '%p')
+    assert_equal 'pm', @backend.localize('de', @evening, '%p')
+  end
+
+  def test_translate_given_no_format_it_does_not_fail
+    assert_nothing_raised{ @backend.localize 'de', @morning }
+  end
+
+  def test_translate_given_an_unknown_format_it_does_not_fail
+    assert_nothing_raised{ @backend.localize 'de', @morning, '%x' }
+  end
+end
+
+class I18nSimpleBackendLocalizeTimeTest < Test::Unit::TestCase
+  include I18nSimpleBackendTestSetup
+
+  def setup
+    @old_timezone, ENV['TZ'] = ENV['TZ'], 'UTC'
+    @backend = I18n::Backend::Simple.new
+    add_datetime_translations
+    @morning = Time.parse '2008-01-01 6:00 UTC'
+    @evening = Time.parse '2008-01-01 18:00 UTC'
+  end
+
+  def teardown
+    @old_timezone ? ENV['TZ'] = @old_timezone : ENV.delete('TZ')
+  end
+
+  def test_translate_given_the_short_format_it_uses_it
+    assert_equal '01. Jan 06:00', @backend.localize('de', @morning, :short)
+  end
+
+  def test_translate_given_the_long_format_it_uses_it
+    assert_equal '01. Januar 2008 06:00', @backend.localize('de', @morning, :long)
+  end
+
+  # TODO Seems to break on Windows because ENV['TZ'] is ignored. What's a better way to do this?
+  # def test_translate_given_the_default_format_it_uses_it
+  #   assert_equal 'Di, 01. Jan 2008 06:00:00 +0000', @backend.localize('de', @morning, :default)
+  # end
+
+  def test_translate_given_a_day_name_format_it_returns_the_correct_day_name
+    assert_equal 'Dienstag', @backend.localize('de', @morning, '%A')
+  end
+
+  def test_translate_given_an_abbr_day_name_format_it_returns_the_correct_abbrevated_day_name
+    assert_equal 'Di', @backend.localize('de', @morning, '%a')
+  end
+
+  def test_translate_given_a_month_name_format_it_returns_the_correct_month_name
+    assert_equal 'Januar', @backend.localize('de', @morning, '%B')
+  end
+
+  def test_translate_given_an_abbr_month_name_format_it_returns_the_correct_abbrevated_month_name
+    assert_equal 'Jan', @backend.localize('de', @morning, '%b')
+  end
+
+  def test_translate_given_a_meridian_indicator_format_it_returns_the_correct_meridian_indicator
+    assert_equal 'am', @backend.localize('de', @morning, '%p')
+    assert_equal 'pm', @backend.localize('de', @evening, '%p')
+  end
+
+  def test_translate_given_no_format_it_does_not_fail
+    assert_nothing_raised{ @backend.localize 'de', @morning }
+  end
+
+  def test_translate_given_an_unknown_format_it_does_not_fail
+    assert_nothing_raised{ @backend.localize 'de', @morning, '%x' }
+  end
+end
+
+class I18nSimpleBackendHelperMethodsTest < Test::Unit::TestCase
+  def setup
+    @backend = I18n::Backend::Simple.new
+  end
+
+  def test_deep_symbolize_keys_works
+    result = @backend.send :deep_symbolize_keys, 'foo' => {'bar' => {'baz' => 'bar'}}
+    expected = {:foo => {:bar => {:baz => 'bar'}}}
+    assert_equal expected, result
+  end
+end
+
+class I18nSimpleBackendLoadTranslationsTest < Test::Unit::TestCase
+  include I18nSimpleBackendTestSetup
+
+  def test_load_translations_with_unknown_file_type_raises_exception
+    assert_raise(I18n::UnknownFileType) { @backend.load_translations "#{@locale_dir}/en.xml" }
+  end
+
+  def test_load_translations_with_ruby_file_type_does_not_raise_exception
+    assert_nothing_raised { @backend.load_translations "#{@locale_dir}/en.rb" }
+  end
+
+  def test_load_rb_loads_data_from_ruby_file
+    data = @backend.send :load_rb, "#{@locale_dir}/en.rb"
+    assert_equal({:'en-Ruby' => {:foo => {:bar => "baz"}}}, data)
+  end
+
+  def test_load_rb_loads_data_from_yaml_file
+    data = @backend.send :load_yml, "#{@locale_dir}/en.yml"
+    assert_equal({'en-Yaml' => {'foo' => {'bar' => 'baz'}}}, data)
+  end
+
+  def test_load_translations_loads_from_different_file_formats
+    @backend = I18n::Backend::Simple.new
+    @backend.load_translations "#{@locale_dir}/en.rb", "#{@locale_dir}/en.yml"
+    expected = {
+      :'en-Ruby' => {:foo => {:bar => "baz"}},
+      :'en-Yaml' => {:foo => {:bar => "baz"}}
+    }
+    assert_equal expected, backend_get_translations
+  end
+end
+
+class I18nSimpleBackendLoadPathTest < Test::Unit::TestCase
+  include I18nSimpleBackendTestSetup
+
+  def teardown
+    I18n.load_path = []
+  end
+
+  def test_nested_load_paths_do_not_break_locale_loading
+    @backend = I18n::Backend::Simple.new
+    I18n.load_path = [[File.dirname(__FILE__) + '/locale/en.yml']]
+    assert_nil backend_get_translations
+    assert_nothing_raised { @backend.send :init_translations }
+    assert_not_nil backend_get_translations
+  end
+
+  def test_adding_arrays_of_filenames_to_load_path_do_not_break_locale_loading
+    @backend = I18n::Backend::Simple.new
+    I18n.load_path << Dir[File.dirname(__FILE__) + '/locale/*.{rb,yml}']
+    assert_nil backend_get_translations
+    assert_nothing_raised { @backend.send :init_translations }
+    assert_not_nil backend_get_translations
+  end
+end
+
+class I18nSimpleBackendReloadTranslationsTest < Test::Unit::TestCase
+  include I18nSimpleBackendTestSetup
+  
+  def setup
+    @backend = I18n::Backend::Simple.new
+    I18n.load_path = [File.dirname(__FILE__) + '/locale/en.yml']
+    assert_nil backend_get_translations
+    @backend.send :init_translations
+  end
+  
+  def teardown
+    I18n.load_path = []
+  end
+  
+  def test_setup
+    assert_not_nil backend_get_translations
+  end
+  
+  def test_reload_translations_unloads_translations
+    @backend.reload!
+    assert_nil backend_get_translations
+  end
+  
+  def test_reload_translations_uninitializes_translations
+    @backend.reload!
+    assert_equal @backend.initialized?, false
+  end
+end