RubyUnit is a simple Ruby testing framework developed by Masaki Suketa. Like Junit, RubyUnit requires your test cases to extend from RUNIT::TestCase. The license under which it is release is same as that of Ruby.

You can download RubyUnit from here.

Following is a sample RubyUnit test case code,

require 'rubyunit'
class SimpleTest < RUNIT::TestCase
  def setup
    @fval1 = 2.0
    @fval2 = 3.0
  end
  def test_add
    result = @fval1 + @fval2
    assert(result == 6.0)
  end
  def test_divide_by_zero
    zero = 0
    result = 8 / zero
  end
  def test_equals
    assert_equal(12, 12)
    assert_equal(12, 13)
  end
  def test_match
    assert_match(/foo/, 'foobar')
    assert_match(/foo/, 'barbaz')
  end
end