require 'rubygems'
require 'minitest/autorun'
require 'rdoc/rdoc'
require 'rdoc/ruby_lex'

class TestRubyLex < MiniTest::Unit::TestCase
  def test_unary_minus
    ruby_lex = RDoc::RubyLex.new("-1", nil)
    assert_equal("-1", ruby_lex.token.value)

    ruby_lex = RDoc::RubyLex.new("a[-2]", nil)
    2.times { ruby_lex.token } # skip "a" and "["
    assert_equal("-2", ruby_lex.token.value)

    ruby_lex = RDoc::RubyLex.new("a[0..-12]", nil)
    4.times { ruby_lex.token } # skip "a", "[", "0", and ".."
    assert_equal("-12", ruby_lex.token.value)

    ruby_lex = RDoc::RubyLex.new("0+-0.1", nil)
    2.times { ruby_lex.token } # skip "0" and "+"
    assert_equal("-0.1", ruby_lex.token.value)
  end
end