gistfile1.txt

[~/Projects/exercism]$ ruby ruby/rna-transcription/rna-transcription_test.rb
Run options: --seed 51147

# Running tests:

EEEEE

Finished tests in 0.001201s, 4163.1973 tests/s, 0.0000 assertions/s.

  1) Error:
DNATest#test_it_transcribes_all_occurrences_of_thymidine_to_uracil:
NameError: uninitialized constant DNATest::DNA
    ruby/rna-transcription/rna-transcription_test.rb:23:in `test_it_transcribes_all_occurrences_of_thymidine_to_uracil'

  2) Error:
DNATest#test_it_transcribes_thymidine_to_uracil:
NameError: uninitialized constant DNATest::DNA
    ruby/rna-transcription/rna-transcription_test.rb:19:in `test_it_transcribes_thymidine_to_uracil'

  3) Error:
DNATest#test_transcribes_guanosine_unchanged:
NameError: uninitialized constant DNATest::DNA
    ruby/rna-transcription/rna-transcription_test.rb:11:in `test_transcribes_guanosine_unchanged'

  4) Error:
DNATest#test_transcribes_adenosine_unchanged:
NameError: uninitialized constant DNATest::DNA
    ruby/rna-transcription/rna-transcription_test.rb:15:in `test_transcribes_adenosine_unchanged'

  5) Error:
DNATest#test_transcribes_cytidine_unchanged:
NameError: uninitialized constant DNATest::DNA
    ruby/rna-transcription/rna-transcription_test.rb:7:in `test_transcribes_cytidine_unchanged'

5 tests, 0 assertions, 0 failures, 5 errors, 0 skips
[~/Projects/exercism]$ cat ruby/rna-transcription/rna-transcription_test.rb
require 'minitest/autorun'
require_relative 'dna'

class DNATest < MiniTest::Unit::TestCase

  def test_transcribes_cytidine_unchanged
    assert_equal 'C', DNA.new("C").to_rna
  end

  def test_transcribes_guanosine_unchanged
    assert_equal 'G', DNA.new("G").to_rna
  end

  def test_transcribes_adenosine_unchanged
    assert_equal 'A', DNA.new("A").to_rna
  end

  def test_it_transcribes_thymidine_to_uracil
    assert_equal 'U', DNA.new("T").to_rna
  end

  def test_it_transcribes_all_occurrences_of_thymidine_to_uracil
    assert_equal 'ACGUGGUCUUAA', DNA.new('ACGTGGTCTTAA').to_rna
  end

end
[~/Projects/exercism]$ cat ruby/rna-transcription/dna.rb
class Acid
  def initialize(sequence)
    @sequence = sequence
  end

  def to_str
    @sequence
  end

  def ==(other)
    if String === other
      @sequence == other
    else
      super
    end
  end
end

class RibonucleicAcid < Acid
  def self.from_dna_sequence(sequence)
    new sequence.gsub('T', 'U')
  end
end

class DeoxyribonucleicAcid < Acid
  def to_rna(conversion_factory = RibonucleicAcid)
    conversion_factory.from_dna_sequence(@sequence)
  end
end