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Filename : failure.rb

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#--
#
# Author:: Nathaniel Talbott.
# Copyright:: Copyright (c) 2000-2002 Nathaniel Talbott. All rights reserved.
# License:: Ruby license.

module Test
  module Unit

    # Encapsulates a test failure. Created by Test::Unit::TestCase
    # when an assertion fails.
    class Failure
      attr_reader :test_name, :location, :message
      
      SINGLE_CHARACTER = 'F'

      # Creates a new Failure with the given location and
      # message.
      def initialize(test_name, location, message)
        @test_name = test_name
        @location = location
        @message = message
      end
      
      # Returns a single character representation of a failure.
      def single_character_display
        SINGLE_CHARACTER
      end

      # Returns a brief version of the error description.
      def short_display
        "#@test_name: #{@message.split("\n")[0]}"
      end

      # Returns a verbose version of the error description.
      def long_display
        location_display = if(location.size == 1)
          location[0].sub(/\A(.+:\d+).*/, ' [\\1]')
        else
          "\n    [#{location.join("\n     ")}]"
        end
        "Failure:\n#@test_name#{location_display}:\n#@message"
      end

      # Overridden to return long_display.
      def to_s
        long_display
      end
    end
  end
end