Conociendo Minitest

Introducción básica a Minitest, la librería de pruebas estándar desde Ruby 1.9

Transcript

1. Minitest Mario A Chávez
 @mario_chavez
2. ¿Quién prueba sus aplicaciones?
3. ¿Quién prueba sus aplicaciones de forma automática?
4. - Test::Unit - RSpec -Minitest
5. Incluido como librería estándar desde Ruby 1.9
6. Test::Unit es historia, Minitest es compatible
7. Rspec bloated!
8. Minitest es pequeño y rápido, fácil de extender
9. Minitest es Ruby!
10. require 'minitest/autorun' class TeaTest < Minitest::Test def test_green_tea_temperature hot_tea = Tea.new :green
    assert(hot_tea.temperature == 150) end end
11. require 'minitest/autorun' class TeaTest < Minitest::Test def test_green_tea_temperature hot_tea = Tea.new :green
    assert_equal 150, hot_tea.temperature end end
12. Pero me gusta mas la sintaxis Spec!
13. require 'minitest/autorun' describe Tea do
    describe ‘Green tea’ do
    subject { Tea.new :green }
    it ‘temperature should be right’ do subject.temperature.must_equal 150 end
    end end
14. ¿Qué? ¿doble “describe”? Vamos a extender Minitest
15. class Minitest::Spec class << self alias :context :describe end end
16. require 'minitest/autorun' describe Tea do
    context ‘Green tea’ do
    subject { Tea.new :green }
    it ‘temperature should be right’ do subject.temperature.must_equal 150 end
    end end
17. Matchers personalizados
18. require 'minitest/assertions' module Minitest::Assertions def assert_include(expected, actual) expected.is_a?(Enumerable) && expected.include?(actual) end end require 'minitest/autorun' class TeaTest < Minitest::Test def test_available_teas_include_green teas = [:camomille, :green] assert_include teas, :green end end
19. require 'minitest/spec' module Minitest::Expectations Enumerable.infect_an_assertion :assert_inclu de, :must_include end require 'minitest/autorun' describe Tea do it 'available teas include green' do teas = [:camomile, :green] teas.must_include :green end end
20. Múltiples reporters
21. $ ruby minitest.rb -v Run options: -v --seed 58567 # Running tests: Tea::Green tea#test_0001_temperature should be right = 0.00 s = . TeaTest#test_green_tea_temperature = 0.00 s = . Finished tests in 0.000986s, 2028.3976 tests/s, 2028.3976 assertions/s. 2 tests, 2 assertions, 0 failures, 0 errors, 0 skips
22. $ ruby minitest.rb Run options: --seed 36590 # Running: . Finished in 0.001162s, 860.5852 runs/s, 0.0000 assertions/s. $ ruby minitest.rb -p Run options: -p --seed 8992 # Running: . Fabulous run in 0.001219s, 820.3445 runs/ s, 0.0000 assertions/s.
23. Minitest ejecuta las pruebas de forma aleatoria
24. También las puede ejecutar de forma paralela
25. Incluye: - Benchmark - Mocks -Stubs
26. Rails 4 usa Minitest con sintaxis de Test::Unit
27. Recursos •Repo de Git: https://github.com/seattlerb/minitest •Guía: http://mattsears.com/articles/2011/12/10/ minitest-quick-reference •Minitest-rails: https://github.com/blowmage/ minitest-rails •Como probar Rails con Minitest: http:// blog.crowdint.com/2013/06/14/testing-rails-with- minitest.html
28. Gracias Mario A Chávez
 @mario_chavez