A simple ruby test system (made for coderpad interviews)

coderpad.rb

# Coderpad with simple test system
# provides a few basic assertions and a test harness so you can at least test drive
# those silly interview puzzles that only ever come up in interviews and almost 
# never in real work.

class Code
  def sut(param1 = nil, param2 = nil)
    return true
  end

  def xtest_equality
    param1 = nil
    param2 = nil
    result = sut(param1, param2)
    assertEqual(true, result)
  end

  def xtest_truth
    param1 = nil
    param2 = nil
    result = sut(param1, param2)
    assertTrue(result, "for p1=#{param1} and p2=#{param2}")
  end
end





module Testing
  def run_tests
    begin

      count = 0
      self.class.instance_methods(false).grep(/^test_/).each do |meth|
        puts "TEST: #{meth}"
        self.send(meth)
        count += 1
      end

      if count.zero?
        puts "\n ❓   hmm 🎉 #{count} tests found"
      else
        puts "\n ✅   YAY 🎉 #{count} tests passed"
      end
    rescue => ex
      puts "\n 😔   BOO: #{ex}"
      ex.backtrace.each do |line|
        next unless line =~ /solution\.rb/

        puts line
      end
    end
  end

  # ---- ASSERTIONS ---------------------------------------------------------

  def assertEqual(expected, actual)
    raise "Not equal: [#{expected}] is not [#{actual}]" unless expected == actual
  end

  def assertTrue(something, message = 'no other message')
    raise "<#{something}> is not true: #{message}" unless something == true
  end

  def assertFalse(something, message = 'no other message')
    raise "<#{something}> is not false: #{message}" unless something == false
  end
end


code = Code.new
class << code
   include Testing
end
code.run_tests