tc_dictionaryinfo.rb

# coding: utf-8

# TestDictionaryInfo encapsulates tests for the basic
# behavior of Natto::DictionaryInfo
class TestDictionaryInfo < Test::Unit::TestCase
  def setup
    m = Natto::MeCab.new
    @dicts = m.dicts

    out = `mecab -D`.lines.to_a
    out.each do |l|
      tokens = l.split("\t")
      @sysdic_filename = tokens[1].strip if tokens[0] =~ /filename:/i
      @sysdic_charset = tokens[1].strip if tokens[0] =~ /charset:/i
    end
  end

  def teardown
    @dicts = nil
  end

  # Tests the dictionaries accessor method of Natto::MeCab.
  # Assumes that:
  # a) system dictionary is /usr/local/lib/mecab/dic/ipadic/sys.dic
  # b) system dictionary encoding is utf-8
  # c) only dealing w/ case of 1 dictionary being used
  def test_dictionaries_accessor
    assert @dicts.empty? == false
    sysdic = @dicts.first
    assert_equal(@sysdic_filename, sysdic[:filename])
    assert_equal(@sysdic_charset, sysdic[:charset])
    assert_equal(0x0, sysdic[:next].address)
  end

  # Tests the to_s method.
  def test_to_s
    #<Natto::DictionaryInfo:0x288879bc @filename=\"/usr/local/lib/mecab/dic/ipadic/sys.dic\", @charset=\"utf8\">
    assert(@dicts.first.to_s.include?("filename=\"#{@sysdic_filename}\", charset=\"#{@sysdic_charset}\""))
  end

  # Tests the accessors of Natto::DictionaryInfo.
  # Note: Object#type is deprecated in 1.9.n, but comes with a warning
  #       in 1.8.n
  def test_dictionary_info_member_accessors
    sysdic = @dicts.first
    members = [
      :filename,
      :charset,
      :type,
      :size,
      :lsize,
      :rsize,
      :version,
      :next 
    ]
    members.each do |nomme|
      assert_not_nil(sysdic.send nomme ) 
    end
    
    # NoMethodError will be raised for anything else!
    assert_raise NoMethodError do
      sysdic.send :unknown_attr
    end
  end
end