Testing C# and ASP.net using Ruby
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This document discusses using Ruby testing techniques with C# and ASP.NET. It begins by explaining how the mindset and practices of Ruby testing, such as test-driven development (TDD) and behavior-driven development (BDD), can be applied. It then provides examples of writing Ruby-style tests for C# code using tools like RSpec and describes testing strategies like sharing examples across tests. The document advocates an outside-in approach of writing acceptance tests first before unit tests.
![Define the specrequire '../spec_helper‘describe ProductController, “Product homepage requested" do context “with empty Category ID" do before(:each) do ... End it "should redirect to main landing page" do @result.route_values[‘controller'].should == ‘Index’ @result.route_values[‘home'].should == ‘Home’ endendThanks to TekPub for Kona sample](https://image.slidesharecdn.com/qcon2010presentation-final-100311055703-phpapp02/85/Testing-C-and-ASP-net-using-Ruby-25-320.jpg)
![[Subject(typeof(HomeController))]public class when_the_navigation_controller_is_asked_for_the_header : specification_for_navigation_controller{ static ActionResult result; Establish context = () => identity_tasks.Stub(i => i.IsSignedIn()).Return(true); Because of = () => result = subject.Menu(); It should_ask_the_identity_tasks_if_the_user_is_signed_in = () => identity_tasks.AssertWasCalled(x => x.IsSignedIn()); It should_return_the_default_view = () => result.ShouldBeAView().And().ViewName.ShouldBeEmpty(); It should_not_use_a_master_page = () => result.ShouldBeAView().And().MasterName.ShouldBeEmpty(); It should_set_the_view_model_property_to_a_new_menu_view_model = () =>result.Model<MenuViewModel>().ShouldNotBeNull(); It should_set_the_properties_of_the_view_model_correctly = () => result.Model<MenuViewModel>().IsLoggedIn.ShouldBeTrue(); }](https://image.slidesharecdn.com/qcon2010presentation-final-100311055703-phpapp02/85/Testing-C-and-ASP-net-using-Ruby-29-320.jpg)
![Given /^”([^\"]*)” has a public calendar$/ do |user| pendingEndWhen /^ the manager views “([^\"]*)”’s calendar$/ do |user| pendingEndThen /^ an empty calendar should be shown $/ do pendingend](https://image.slidesharecdn.com/qcon2010presentation-final-100311055703-phpapp02/85/Testing-C-and-ASP-net-using-Ruby-55-320.jpg)
![Given /^the featured product "([^\"]*)"$/ do |product_name|Product.createproduct_name, ‘featured’end](https://image.slidesharecdn.com/qcon2010presentation-final-100311055703-phpapp02/85/Testing-C-and-ASP-net-using-Ruby-61-320.jpg)
![Then /^I should see "([^\"]*)" listed under "([^\"]*)"$/ do |product, area| within div_id(area) do |products|products.should contain(product) endEnddef div_id(area) "#" + area.downcase.underscoreend](https://image.slidesharecdn.com/qcon2010presentation-final-100311055703-phpapp02/85/Testing-C-and-ASP-net-using-Ruby-63-320.jpg)
![Dynamically replacedenv_selenium.rbdef url "http://www.website.local"endWebrat.configure do |config|config.mode = :seleniumconfig.application_framework = :externalconfig.selenium_browser_key = get_browser_key puts "Executing tests using the browser #{config.selenium_browser_key}"enddef get_browser_key() command = "*firefox" command = ENV['BROWSER'] if ENV['BROWSER'] return commandend](https://image.slidesharecdn.com/qcon2010presentation-final-100311055703-phpapp02/85/Testing-C-and-ASP-net-using-Ruby-64-320.jpg)
![using Cuke4Nuke.Framework;usingNUnit.Framework;usingWatiN.Core;namespaceGoogle.StepDefinitions{ publicclassSearchSteps { Browser _browser; [Before] publicvoidSetUp() { _browser = new WatiN.Core.IE(); } [After] publicvoidTearDown() { if (_browser != null) { _browser.Dispose(); } } [When(@"^(?:I'm on|I go to) the search page$")] publicvoidGoToSearchPage() { _browser.GoTo("http://www.google.com/"); } [When("^I search for \"(.*)\"$")] publicvoidSearchFor(string query) { _browser.TextField(Find.ByName("q")).TypeText(query); _browser.Button(Find.ByName("btnG")).Click(); } [Then("^I should be on the search page$")] publicvoidIsOnSearchPage() { Assert.That(_browser.Title == "Google"); } [Then("^I should see \"(.*)\" in the results$")] publicvoidResultsContain(stringexpectedResult) { Assert.That(_browser.ContainsText(expectedResult)); } }}](https://image.slidesharecdn.com/qcon2010presentation-final-100311055703-phpapp02/85/Testing-C-and-ASP-net-using-Ruby-75-320.jpg)
![Given /^(?:I'm on|I go to) the search page$/ do visit 'http://www.google.com'end When /^I search for "([^\"]*)"$/ do|query| fill_in 'q', :with => query click_button 'Google Search'end Then /^I should be on the search page$/ do dom.search('title').should == "Google"end Then /^I should see \"(.*)\" in the results$/ do|text| response.should contain(text)end](https://image.slidesharecdn.com/qcon2010presentation-final-100311055703-phpapp02/85/Testing-C-and-ASP-net-using-Ruby-76-320.jpg)
Testing C# and ASP.net using Ruby
- 1. Testing C# and ASP.net using RubyMeerkatalyst@[email protected]
- 2. London based C# MVPWeb Developer @ 7digital.com Working on a number of Open Source ProjectsCo-Author of Testing ASP.net Web Applicationshttp://www.testingaspnet.com
- 3. How we can apply Ruby testing techniques to C# - In mindset - In practice 1| Object Level testing2| Systems testing
- 5. VALUE
- 6. Realised Ruby doesn’t have as many problems as .net
- 9. I love writing tests upfront
- 10. Not sure about implementationAccording to various TDD books \ blogs
- 11. Help with an initial design but what about long term?
- 12. “Unit”
- 16. Code Coverage
- 20. Ruby (via IronRuby)p = ProductController.new(nil)C#public class ProductController : Controller{IStoreService _service; public ProductController(IStoreService service) { _service = service; }}Thanks to TekPub for Kona sample
- 21. Define the contextC#public ActionResult Index(int? id){ProductListViewModel model = null; if (id.HasValue) model = _service.GetHomeModel(id.Value); else return RedirectToAction("Index", "Home"); return View(model);}Ruby (via IronRuby)describe ProductController, “Product homepage requested" do context "when Category ID is empty" do endendThanks to TekPub for Kona sample
- 22. Create the context$: << ‘../../Kona/bin/’require ‘Kona.dll’Include Kona::Controllersdescribe ProductController, “Product homepage requested" do context "when Category ID is empty" do endendThanks to TekPub for Kona sample
- 23. Create the contextrequire '../spec_helper‘describe ProductController, “Product homepage requested" do context "when Category ID is empty" do endendThanks to TekPub for Kona sample
- 24. Create the contextrequire '../spec_helper‘describe ProductController, “Product homepage requested" do context "when Category ID is empty" do before(:each) do controller = ProductController.new nilcategory_id = nil @result = controller.Indexcategory_id end endendThanks to TekPub for Kona sample
- 25. Define the specrequire '../spec_helper‘describe ProductController, “Product homepage requested" do context “with empty Category ID" do before(:each) do ... End it "should redirect to main landing page" do @result.route_values[‘controller'].should == ‘Index’ @result.route_values[‘home'].should == ‘Home’ endendThanks to TekPub for Kona sample
- 26. Stubbing via caricaturecontext “with validCategory ID" do Before(:each)view_model = product_list('Test Category') service = isolate Services::IStoreServiceservice.when_receiving(:get_home_model).with(valid_category_id).return(view_model) controller = ProductController.new service @result = controller.Indexvalid_category_id end it “returns a view model” do @result.view_model.should_not == nil end it “should return name of selected category” do @result.view_model.selected_category.name.should == 'Test Category‘ endendThanks to TekPub for Kona sample
- 27. Tests and Databasesdescribe Services::StoreService do before(:all) dosession = NHibernate::create_sessionNHibernate::insert_category session Services::StoreService.new session @model = service.get_home_model 0 end it "should return constructed object" do @model.should_notbe_nil end it "should return all categories from database" do @model.Categories.to_a.Count.should == 1 endendThanks to TekPub for Kona sample
- 29. [Subject(typeof(HomeController))]public class when_the_navigation_controller_is_asked_for_the_header : specification_for_navigation_controller{ static ActionResult result; Establish context = () => identity_tasks.Stub(i => i.IsSignedIn()).Return(true); Because of = () => result = subject.Menu(); It should_ask_the_identity_tasks_if_the_user_is_signed_in = () => identity_tasks.AssertWasCalled(x => x.IsSignedIn()); It should_return_the_default_view = () => result.ShouldBeAView().And().ViewName.ShouldBeEmpty(); It should_not_use_a_master_page = () => result.ShouldBeAView().And().MasterName.ShouldBeEmpty(); It should_set_the_view_model_property_to_a_new_menu_view_model = () =>result.Model<MenuViewModel>().ShouldNotBeNull(); It should_set_the_properties_of_the_view_model_correctly = () => result.Model<MenuViewModel>().IsLoggedIn.ShouldBeTrue(); }
- 30. describe HomeController, “When the navigation controller is asked for the header” do before(:all) do @identity_tasks.Stub(i => i.IsSignedIn()).Return(true); @result = subject.Menu(); end it “should ask the identity tasks if the user is signed in” do @identity_tasks.did_receive(:is_signed_in) .should be_successful end it “should return the default view” do @result.shouldbe_view @result.view_name.shouldbe_empty end it “should not use a master page” do @result.shouldbe_view @result.master_name.shouldbe_empty end it “should set the view model property to a new menu view model” do @result.shouldbe_view @result.model.should_notbe_nil end it “should set the properties of the view model correctly” do @result.model.is_logged_in.shouldbe_true endend
- 31. Consider your test suite containing > 500 testsEach test matters.But each problem hurts more
- 32. Share specsshare_examples_for "unauthorized user" do it 'sets an-error message' do result.view_model.error_message.should == "Sorry, you need to login to access." end it 'redirects to the login page' do result.view_name.should end end describe CheckoutController do it_should_behave_like “unauthorized user“describe AccountController doit_should_behave_like “unauthorized user“
- 33. Include additional functionalityrequire ‘nhibernate_helpers’require ‘product_creation_extensions’require ‘customer_creation_extensions’describe ProductController do
- 34. model.Categories.to_a.Count.should == 1model.Categories.should have(1)module Matchers class CountCheck def initialize(expected) @expected = expected end def matches?(actual)actual.to_a.Count() == @expected end end def have(expected)CountCheck.new(expected) endendDuck Typing FTW!
- 35. Dynamically create specsdef find_products(category)Product.Find(:all, :conditions=> “category #{category}”)enddescribe ‘products should be able to be added to basket' do before(:all) do @basket = Basket.new endfind_products(‘Boots’).each do |p| it “can add #{p.product_name} to basket" do @basket.add_item p.id @basket.should contain(p) end endend
- 37. I’m against integration testsOr at least 90% of them
- 40. 12 hour execution time?
- 41. 5174 passed, 491 failed, 94 skipped
- 42. “Tests aren’t failing because of defects”
- 43. ‘Nearly’ end-to-endWhile knowing about everything in the middle...
- 44. Becomes a pain to refactor
- 45. FEAR
- 46. FEAR
- 48. Bad organisation
- 49. Increased duplicationOverlapUnit TestsIntegration TestsUI \ System \ Acceptance TestsOverlap
- 50. STOPPED
- 54. Feature: Creating a schedule In Order to book meetings The manager Needs to be able to view a teams calendarScenario: View calendar of another viewGiven “Bob” has a public calendarWhen the manager views “Bob”’s calendarThen an empty calendar should be shown
- 55. Given /^”([^\"]*)” has a public calendar$/ do |user| pendingEndWhen /^ the manager views “([^\"]*)”’s calendar$/ do |user| pendingEndThen /^ an empty calendar should be shown $/ do pendingend
- 56. Thanks to TekPub for Kona sample
- 57. Thanks to TekPub for Kona sample
- 58. Feature: Display Products In order to browse the catalog The customer Needs to see productsScenario: Single featured product on homepage Given the featured product "Adventure Works 20x30 Binoculars" When I visit the homepage Then I should see "Adventure Works 20x30 Binoculars" listed under "Featured"
- 61. Given /^the featured product "([^\"]*)"$/ do |product_name|Product.createproduct_name, ‘featured’end
- 62. When /^I visit the homepage$/ do visit url + '/'end
- 63. Then /^I should see "([^\"]*)" listed under "([^\"]*)"$/ do |product, area| within div_id(area) do |products|products.should contain(product) endEnddef div_id(area) "#" + area.downcase.underscoreend
- 64. Dynamically replacedenv_selenium.rbdef url "http://www.website.local"endWebrat.configure do |config|config.mode = :seleniumconfig.application_framework = :externalconfig.selenium_browser_key = get_browser_key puts "Executing tests using the browser #{config.selenium_browser_key}"enddef get_browser_key() command = "*firefox" command = ENV['BROWSER'] if ENV['BROWSER'] return commandend
- 65. cucumber --profile selenium browser=*firefoxcucumber --profile selenium browser=*safaricucumber --profile selenium browser=*iexplorecucumber --profile selenium browser=*googlechrome
- 66. cucumber --profile webratHEADLESS BROWSINGBY REPLACING ENV.RB
- 67. Scenario Outline: Blowout Specials Given <product> in "Blowout Specials" When I visit the homepage Then I should see <product> listed under "Blowout Specials" Examples: | product | | "Cascade Fur-lined Hiking Boots" | | "Trailhead Locking Carabiner" | | "Climbing Rope with Single Caribiner" |
- 69. Multiple extension frameworksTest command line applicationsTest Silverlight\FlexTest WPF based desktop applicationsExecute in parallel across multiple machines
- 70. HUGE RE-USE == VALUE
- 71. http://www.flickr.com/photos/leon_homan/2856628778/
- 72. Focus on finding true valueLook at other communities for advice, support and inspiration
- 74. Lonestar
- 75. using Cuke4Nuke.Framework;usingNUnit.Framework;usingWatiN.Core;namespaceGoogle.StepDefinitions{ publicclassSearchSteps { Browser _browser; [Before] publicvoidSetUp() { _browser = new WatiN.Core.IE(); } [After] publicvoidTearDown() { if (_browser != null) { _browser.Dispose(); } } [When(@"^(?:I'm on|I go to) the search page$")] publicvoidGoToSearchPage() { _browser.GoTo("http://www.google.com/"); } [When("^I search for \"(.*)\"$")] publicvoidSearchFor(string query) { _browser.TextField(Find.ByName("q")).TypeText(query); _browser.Button(Find.ByName("btnG")).Click(); } [Then("^I should be on the search page$")] publicvoidIsOnSearchPage() { Assert.That(_browser.Title == "Google"); } [Then("^I should see \"(.*)\" in the results$")] publicvoidResultsContain(stringexpectedResult) { Assert.That(_browser.ContainsText(expectedResult)); } }}
- 76. Given /^(?:I'm on|I go to) the search page$/ do visit 'http://www.google.com'end When /^I search for "([^\"]*)"$/ do|query| fill_in 'q', :with => query click_button 'Google Search'end Then /^I should be on the search page$/ do dom.search('title').should == "Google"end Then /^I should see \"(.*)\" in the results$/ do|text| response.should contain(text)end
- 77. SoftwareRecommended:IronRubyRubyCucumberRspecWebRatmechanizeSelenium RCselenium-clientCaricatureactiverecord-sqlserver-adapterOptional:XSP \ MonoJetBrain’sRubyMineJRubyCapybaraCelerityActive record active-record-model-generatorFakerGuid
- 79. SQL Server and Rubygem install activerecord-sqlserver-adapterDownload dbi-0.2.2.zip Extract dbd\ADO.rb to ruby\site_ruby\1.8\DBD\ADO.rb
Editor's Notes
- #6: Cost of defects to 0Every test needs to justify itselfBut not just justify, add value both during the initial development and going forward. After working on a number of large scale .net based automation projects I started to question how much value I was adding to the project. This lead me to look at other communities as inspiration
- #8: More abstracted away... As such nicer for testingMore fluid, more human readable.Perfect for tests. This is why I looked at how I can start using Ruby both in practice and mindset
- #10: Cleaner, more focused designDefining how it’s meant to workProvide documentation for myself and team members over coming monthsyears of projectRefactoring
- #12: Naming Implementation might go though multiple interactions until I reach my desired behaviour.
- #13: Or at least, that’s what I would like..Net Problems- Unit doesn’t represent the concept of real world software - Legacy where nothing is a unit - Mentoring
- #15: System brings together different parts to solve a particular problem
- #16: Behaviour can be isolated units like TDDBut also accept that it might involve a number of other classes Defining the behaviour of our system, means we aren’t too focused on
- #17: Feature Coverage
- #18: Often forgot in the .Net world...Started to come more maintain stream thanks to Aaron Jenson and Scott BellwareBounded contexts
- #30: http://whocanhelpme.codeplex.com/Good example of how to use Mspec with MVC. Sadly, I think Rspec has a nicer syntax.Naming + tests are very good.
- #64: get_div_id == “Design UI for Testability”
- #66: get_div_id == “Design UI for Testability”
- #67: get_div_id == “Design UI for Testability”
- #68: get_div_id == “Design UI for Testability”
- #69: get_div_id == “Design UI for Testability”