require File.dirname(__FILE__) + '/test_helper.rb' 

class GettextI18nTest < Test::Unit::TestCase
  context "Simple translate" do
    should "return itself if are not translated" do
      I18n.locale = :en
      assert_equal "Some not translated text", I18n.gettext("Some not translated text")
    end

    should "return translated string if are translated" do
      I18n.locale = :pl
      assert_equal "Testowa translacja", I18n.gettext("Test translation")
    end

    should "return translated string in the same language if such is defined" do
      I18n.locale = :en
      assert_equal "Correct translation", I18n.gettext("Translation with mistake")
    end
    
    should "return translation for specified key" do
      I18n.locale = :pl
      assert_equal "Sukces!", I18n._(:key_to_translate)
      assert_equal "Sukces!", I18n._(:"nested.translation")
    end
    
    should "translate string and symbol using built in helpers" do
      I18n.locale = :pl
      assert_equal "Testowa translacja", "Test translation".t
      assert_equal "Sukces!", :"nested.translation".t
    end
    
    should "fallback translation to :root language" do
      I18n.locale = :en
      assert_equal "It's work!", I18n.gettext("Translation fallback")
    end
  end
  
  context "Translate with options" do 
    should "display specified parameter in result" do
      I18n.locale = :pl
      assert_equal "Witaj John!", I18n.gettext("Hello {{who}}!", :who => "John")
    end
    
    should "display specified parameter when translation was not found" do
      I18n.locale = :en
      assert_equal "Hello Bill!", I18n.gettext("Hello {{who}}!", :who => "Bill")
    end
  end
  
  context "Translate inside modules and classes" do 
    should "allow to use gettext methods in extended module" do 
      module SampleFoo
        extend I18n::Gettext
        
        def self.test
          gettext('Test translation')
        end
        
        def self.test2
          gettext("Hello {{who}}!", :who => "John")
        end
      end
      
      results = []
      I18n.locale = :pl
      
      assert begin
        results << SampleFoo.test
        results << SampleFoo.test2
        true
      rescue
        false
      end
      
      assert_equal "Testowa translacja", results.first
      assert_equal "Witaj John!", results.last
    end
    
    should "allow to use gettext methods in extended class and it singleton" do 
      class SampleBar
        include I18n::Gettext
        include I18n::Gettext::Singleton
        
        def self.test
          gettext('Test translation')
        end
        def test
          gettext('Test translation')
        end
      end
      
      results = []
      I18n.locale = :pl
      
      assert begin
        results << SampleBar.test
        results << SampleBar.new.test
        true
      rescue
        false
      end
      
      assert_equal "Testowa translacja", results.first
      assert_equal "Testowa translacja", results.last
    end
  end
  
  context "Translation in Rails" do
    should "allow to use gettext methods in models" do
      class SampleModel < ActiveRecord::Base
        def self.columns; []; end
        def self.foo
          gettext('Test translation')
        end
      end
      
      result = nil
      I18n.locale = :pl
      
      assert begin
        result = SampleModel.foo
        true
      rescue
        false
      end
      
      assert_equal "Testowa translacja", result
    end
    
    # TODO: tests for controllers and views
  end
end