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require 'test_helper'

class I18nOverrideTest < Test::Unit::TestCase
  module OverrideInverse

    def translate(*args)
      super(*args).reverse
    end
    alias :t :translate

  end

  module OverrideSignature

    def translate(*args)
      args.first + args[1]
    end
    alias :t :translate

  end

  def setup
    @I18n = I18n.dup
    @I18n.backend = I18n::Backend::Simple.new
    super
  end

  test "make sure modules can overwrite I18n methods" do
    @I18n.extend OverrideInverse
    @I18n.backend.store_translations('en', :foo => 'bar')

    assert_equal 'rab', @I18n.translate(:foo, :locale => 'en')
    # FIXME: this fails under 1.8.7
    # assert_equal 'rab', @I18n.t(:foo, :locale => 'en')
    assert_equal 'rab', @I18n.translate!(:foo, :locale => 'en')
    assert_equal 'rab', @I18n.t!(:foo, :locale => 'en')
  end

  test "make sure modules can overwrite I18n signature" do
    exception = catch(:exception) do
      @I18n.t('Hello', 'Welcome message on home page', :tokenize => true, :throw => true)
    end
    assert exception.message
    @I18n.extend OverrideSignature
    assert_equal 'HelloWelcome message on home page', @I18n.translate('Hello', 'Welcome message on home page', :tokenize => true) # tr8n example
  end

end
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