rails/activesupport/test/number_helper_i18n_test.rb

require 'abstract_unit'
require 'active_support/number_helper'

module ActiveSupport
  class NumberHelperI18nTest < ActiveSupport::TestCase
    include ActiveSupport::NumberHelper

    def setup
      I18n.backend.store_translations 'ts',
        :number => {
        :format => { :precision => 3, :delimiter => ',', :separator => '.', :significant => false, :strip_insignificant_zeros => false },
        :currency => { :format => { :unit => '&$', :format => '%u - %n', :negative_format => '(%u - %n)', :precision => 2 } },
        :human => {
          :format => {
            :precision => 2,
            :significant => true,
            :strip_insignificant_zeros => true
          },
          :storage_units => {
            :format => "%n %u",
            :units => {
              :byte => "b",
              :kb => "k"
            }
          },
          :decimal_units => {
            :format => "%n %u",
            :units => {
              :deci => {:one => "Tenth", :other => "Tenths"},
              :unit =>  "u",
              :ten => {:one => "Ten", :other => "Tens"},
              :thousand => "t",
              :million => "m",
              :billion =>"b",
              :trillion =>"t" ,
              :quadrillion =>"q"
            }
          }
        },
        :percentage => { :format => {:delimiter => '', :precision => 2, :strip_insignificant_zeros => true} },
        :precision => { :format => {:delimiter => '', :significant => true} }
      },
      :custom_units_for_number_to_human => {:mili => "mm", :centi => "cm", :deci => "dm", :unit => "m", :ten => "dam", :hundred => "hm", :thousand => "km"}
    end

    def test_number_to_i18n_currency
      assert_equal("&$ - 10.00", number_to_currency(10, :locale => 'ts'))
      assert_equal("(&$ - 10.00)", number_to_currency(-10, :locale => 'ts'))
      assert_equal("-10.00 - &$", number_to_currency(-10, :locale => 'ts', :format => "%n - %u"))
    end

    def test_number_to_currency_with_empty_i18n_store
      I18n.backend.store_translations 'empty', {}

      assert_equal("$10.00", number_to_currency(10, :locale => 'empty'))
      assert_equal("-$10.00", number_to_currency(-10, :locale => 'empty'))
    end

    def test_locale_default_format_has_precedence_over_helper_defaults
      I18n.backend.store_translations 'ts',
        { :number => { :format => { :separator => ";" } } }

      assert_equal("&$ - 10;00", number_to_currency(10, :locale => 'ts'))
    end

    def test_number_to_currency_without_currency_negative_format
      I18n.backend.store_translations 'no_negative_format', :number => {
        :currency => { :format => { :unit => '@', :format => '%n %u' } }
      }

      assert_equal("-10.00 @", number_to_currency(-10, :locale => 'no_negative_format'))
    end

    def test_number_with_i18n_precision
      #Delimiter was set to ""
      assert_equal("10000", number_to_rounded(10000, :locale => 'ts'))

      #Precision inherited and significant was set
      assert_equal("1.00", number_to_rounded(1.0, :locale => 'ts'))
    end

    def test_number_with_i18n_precision_and_empty_i18n_store
      I18n.backend.store_translations 'empty', {}

      assert_equal("123456789.123", number_to_rounded(123456789.123456789, :locale => 'empty'))
      assert_equal("1.000", number_to_rounded(1.0000, :locale => 'empty'))
    end

    def test_number_with_i18n_delimiter
      #Delimiter "," and separator "."
      assert_equal("1,000,000.234", number_to_delimited(1000000.234, :locale => 'ts'))
    end

    def test_number_with_i18n_delimiter_and_empty_i18n_store
      I18n.backend.store_translations 'empty', {}

      assert_equal("1,000,000.234", number_to_delimited(1000000.234, :locale => 'empty'))
    end

    def test_number_to_i18n_percentage
      # to see if strip_insignificant_zeros is true
      assert_equal("1%", number_to_percentage(1, :locale => 'ts'))
      # precision is 2, significant should be inherited
      assert_equal("1.24%", number_to_percentage(1.2434, :locale => 'ts'))
      # no delimiter
      assert_equal("12434%", number_to_percentage(12434, :locale => 'ts'))
    end

    def test_number_to_i18n_percentage_and_empty_i18n_store
      I18n.backend.store_translations 'empty', {}

      assert_equal("1.000%", number_to_percentage(1, :locale => 'empty'))
      assert_equal("1.243%", number_to_percentage(1.2434, :locale => 'empty'))
      assert_equal("12434.000%", number_to_percentage(12434, :locale => 'empty'))
    end

    def test_number_to_i18n_human_size
      #b for bytes and k for kbytes
      assert_equal("2 k", number_to_human_size(2048, :locale => 'ts'))
      assert_equal("42 b", number_to_human_size(42, :locale => 'ts'))
    end

    def test_number_to_i18n_human_size_with_empty_i18n_store
      I18n.backend.store_translations 'empty', {}

      assert_equal("2 KB", number_to_human_size(2048, :locale => 'empty'))
      assert_equal("42 Bytes", number_to_human_size(42, :locale => 'empty'))
    end

    def test_number_to_human_with_default_translation_scope
      #Using t for thousand
      assert_equal "2 t", number_to_human(2000, :locale => 'ts')
      #Significant was set to true with precision 2, using b for billion
      assert_equal "1.2 b", number_to_human(1234567890, :locale => 'ts')
      #Using pluralization (Ten/Tens and Tenth/Tenths)
      assert_equal "1 Tenth", number_to_human(0.1, :locale => 'ts')
      assert_equal "1.3 Tenth", number_to_human(0.134, :locale => 'ts')
      assert_equal "2 Tenths", number_to_human(0.2, :locale => 'ts')
      assert_equal "1 Ten", number_to_human(10, :locale => 'ts')
      assert_equal "1.2 Ten", number_to_human(12, :locale => 'ts')
      assert_equal "2 Tens", number_to_human(20, :locale => 'ts')
    end

    def test_number_to_human_with_empty_i18n_store
      I18n.backend.store_translations 'empty', {}

      assert_equal "2 Thousand", number_to_human(2000, :locale => 'empty')
      assert_equal "1.23 Billion", number_to_human(1234567890, :locale => 'empty')
    end

    def test_number_to_human_with_custom_translation_scope
      #Significant was set to true with precision 2, with custom translated units
      assert_equal "4.3 cm", number_to_human(0.0432, :locale => 'ts', :units => :custom_units_for_number_to_human)
    end
  end
end