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#!/usr/bin/env ruby
# encoding: utf-8

require 'test/unit'
require File.join(File.dirname(__FILE__), 'setup_variant')

class TestJSONEncoding < Test::Unit::TestCase
  include JSON

  def setup
    @utf_8 = '["© ≠ €!"]'
    @parsed = [ "© ≠ €!" ]
    @generated = '["\u00a9 \u2260 \u20ac!"]'
    if String.method_defined?(:encode)
      @utf_16_data = [@parsed.first.encode('utf-16be', 'utf-8')]
      @utf_8_ascii_8bit = @utf_8.dup.force_encoding(Encoding::ASCII_8BIT)
      @utf_16be = @utf_8.encode('utf-16be', 'utf-8')
      @utf_16be_ascii_8bit = @utf_16be.dup.force_encoding(Encoding::ASCII_8BIT)
      @utf_16le = @utf_8.encode('utf-16le', 'utf-8')
      @utf_16le_ascii_8bit = @utf_16le.dup.force_encoding(Encoding::ASCII_8BIT)
      @utf_32be = @utf_8.encode('utf-32be', 'utf-8')
      @utf_32be_ascii_8bit = @utf_32be.dup.force_encoding(Encoding::ASCII_8BIT)
      @utf_32le = @utf_8.encode('utf-32le', 'utf-8')
      @utf_32le_ascii_8bit = @utf_32le.dup.force_encoding(Encoding::ASCII_8BIT)
    else
      require 'iconv'
      @utf_16_data = Iconv.iconv('utf-16be', 'utf-8', @parsed.first)
      @utf_8_ascii_8bit = @utf_8.dup
      @utf_16be, = Iconv.iconv('utf-16be', 'utf-8', @utf_8)
      @utf_16be_ascii_8bit = @utf_16be.dup
      @utf_16le, = Iconv.iconv('utf-16le', 'utf-8', @utf_8)
      @utf_16le_ascii_8bit = @utf_16le.dup
      @utf_32be, = Iconv.iconv('utf-32be', 'utf-8', @utf_8)
      @utf_32be_ascii_8bit = @utf_32be.dup
      @utf_32le, = Iconv.iconv('utf-32le', 'utf-8', @utf_8)
      @utf_32le_ascii_8bit = @utf_32le.dup
    end
  end

  def test_parse
    assert_equal @parsed, JSON.parse(@utf_8)
    assert_equal @parsed, JSON.parse(@utf_16be)
    assert_equal @parsed, JSON.parse(@utf_16le)
    assert_equal @parsed, JSON.parse(@utf_32be)
    assert_equal @parsed, JSON.parse(@utf_32le)
  end

  def test_parse_ascii_8bit
    assert_equal @parsed, JSON.parse(@utf_8_ascii_8bit)
    assert_equal @parsed, JSON.parse(@utf_16be_ascii_8bit)
    assert_equal @parsed, JSON.parse(@utf_16le_ascii_8bit)
    assert_equal @parsed, JSON.parse(@utf_32be_ascii_8bit)
    assert_equal @parsed, JSON.parse(@utf_32le_ascii_8bit)
  end

  def test_generate
    assert_equal @generated, JSON.generate(@parsed, :ascii_only => true)
    if defined?(::Encoding)
      assert_equal @generated, JSON.generate(@utf_16_data, :ascii_only => true)
    else
      # XXX checking of correct utf8 data is not as strict (yet?) without :ascii_only
      assert_raises(JSON::GeneratorError) { JSON.generate(@utf_16_data, :ascii_only => true) }
    end
  end
end