-# Author:: Nathaniel Talbott.

-# Copyright:: Copyright (c) 2000-2002 Nathaniel Talbott. All rights reserved.

-# License:: Ruby license.

-

-class Adder

- def initialize(number)

- @number = number

- end

- def add(number)

- return @number + number

- end

-end

-

-# Author:: Nathaniel Talbott.

-# Copyright:: Copyright (c) 2000-2002 Nathaniel Talbott. All rights reserved.

-# License:: Ruby license.

-

-class Subtracter

- def initialize(number)

- @number = number

- end

- def subtract(number)

- return @number - number

- end

-end

-# Author:: Nathaniel Talbott.

-# Copyright:: Copyright (c) 2000-2002 Nathaniel Talbott. All rights reserved.

-# License:: Ruby license.

-

-require 'test/unit'

-require 'adder'

-

-class TC_Adder < Test::Unit::TestCase

- def setup

- @adder = Adder.new(5)

- end

- def test_add

- assert_equal(7, @adder.add(2), "Should have added correctly")

- end

- def teardown

- @adder = nil

- end

-end

-# Author:: Nathaniel Talbott.

-# Copyright:: Copyright (c) 2000-2002 Nathaniel Talbott. All rights reserved.

-# License:: Ruby license.

-

-require 'test/unit'

-require 'subtracter'

-

-class TC_Subtracter < Test::Unit::TestCase

- def setup

- @subtracter = Subtracter.new(5)

- end

- def test_subtract

- assert_equal(3, @subtracter.subtract(2), "Should have subtracted correctly")

- end

- def teardown

- @subtracter = nil

- end

-end

-# Author:: Nathaniel Talbott.

-# Copyright:: Copyright (c) 2000-2002 Nathaniel Talbott. All rights reserved.

-# License:: Ruby license.

-

-require 'test/unit'

-require 'tc_adder'

-require 'tc_subtracter'