require File.dirname(__FILE__) + '/../abstract_unit' class EmptyTrue def empty?() true; end end class EmptyFalse def empty?() false; end end class BlankTest < Test::Unit::TestCase BLANK = [ EmptyTrue.new, nil, false, '', ' ', " \n\t \r ", [], {} ] NOT = [ EmptyFalse.new, Object.new, true, 0, 1, 'a', [nil], { nil => 0 } ] def test_blank BLANK.each { |v| assert v.blank?, "#{v.inspect} should be blank" } NOT.each { |v| assert !v.blank?, "#{v.inspect} should not be blank" } end end